HomeMy WebLinkAboutChapter 05E Energy Conservation Code
CHAPTER 5E
ENERGY CONSERVATION CODE*
* Editor’s Notes:
1. Pursuant to section 107-28, Hawai‘i Revised Statutes (“HRS”), each County shall amend and adopt the Hawai‘i State building codes
and standards listed in HRS, section 107-25 within two years after adoption by the State Building Code council. If a County does not
amend, adopt, and update a State code within this time frame, the respective State code shall become applicable as an interim County
code.
2. Article 5 of chapter 5, “energy conservation,” was repealed by ordinance 20-61, section 12, and replaced with chapter 5E.
Article 1. General Provisions.
Section 5E-1-1. Title.
Section 5E-1-2. Purpose.
Section 5E-1-3. Scope; exceptions.
Section 5E-1-4. Administrative provisions.
Section 5E-1-5. Existing construction and installations.
Section 5E-1-6. Definitions.
Section 5E-1-7. Compliance required.
Section 5E-1-8. Conflict.
Article 2. Installation Requirements.
Section 5E-2-1. International Energy Conservation Code adopted.
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CHAPTER 5E
ENERGY CONSERVATION CODE*
* Editor’s Notes:
1. Pursuant to section 107-28, Hawai‘i Revised Statutes (“HRS”), each County shall amend and adopt the Hawai‘i State building codes
and standards listed in HRS, section 107-25 within two years after adoption by the State Building Code council. If a County does not
amend, adopt, and update a State code within this time frame, the respective State code shall become applicable as an interim County
code.
2. Article 5 of chapter 5, “energy conservation,” was repealed by ordinance 20-61, section 12, and replaced with chapter 5E.
Article 1. General Provisions.
Section 5E-1-1. Title.
This chapter shall be known as the “energy conservation code.”
(2020, ord 20-61, sec 5.) 5E-1-1
Section 5E-1-2. Purpose.
The purpose of this chapter is to promote the design of energy-efficient building
envelopes and installation of energy-efficient mechanical, lighting, and power systems
by establishing minimum standards that promote modern and up-to-date energy-
efficient performance in the construction, alteration, or equipment of buildings or
structures in the County of Hawai‘i.
(2020, ord 20-61, sec 5.) 5E-1-2
Section 5E-1-3. Scope; exceptions.
This chapter sets forth minimum requirements for the design and construction of
buildings for the effective use of energy and is intended to provide flexibility to allow the
use of innovative approaches and techniques to achieve the effective use of energy. It
shall apply to all commercial and residential buildings, building sites, and associated
systems and equipment within the County inland of the shoreline high-water line.
Exceptions to these minimum requirements are listed below:
This chapter shall not apply to:
(1) Work or installations not covered by the International Energy Conservation
Code, 2015 Edition, as adopted and amended by the State Energy
Conservation Code, chapter 3-181.1, Hawai‘i Administrative Rules;
(2) Work on buildings or premises owned by or under the direct control of the
Federal government; or
(3) Agricultural buildings, structures, and appurtenances without electrical power
and plumbing systems are exempt from permit and construction code
requirements, pursuant to section 46-88, Hawai‘i Revised Statutes, except as
otherwise provided for in this construction code.
(2020, ord 20-61, sec 5.) 5E-1-3
Section 5E-1-4. Administrative provisions.
Provisions relating to permitting, enforcement, inspection, and other
administrative procedures pertaining to this chapter are contained in chapter 5, the
construction administrative code.
(2020, ord 20-61, sec 5.) 5E-1-4
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Section 5E-1-5. Existing construction and installations.
Construction and installations in existence and permitted pursuant to applicable
laws and standards in effect when the work thereon was performed, shall not be
deemed to be in violation of subsequent changes to applicable laws or standards,
provided that such installations shall be subject to the provisions of section 5-2-3 of the
construction administrative code.
(2020, ord 20-61, sec 5.) 5E-1-5
Section 5E-1-6. Definitions.
“Authority having jurisdiction” means the director of the department of public
works, or the director’s authorized representative.
“Building” means any structure used or intended for supporting or sheltering any
use or occupancy. The term shall include but not be limited to, any structure mounted
on wheels such as a trailer, wagon, or vehicle which is parked and stationary for any
24-hour period, and is used for business or living purposes; provided, however, that the
term shall not include a push cart or push wagon which is readily movable and which
does not exceed 25 square feet in area, nor shall the term include a trailer or vehicle,
used exclusively for the purpose of selling any commercial product therefrom, which
hold a vehicle license and actually travels on public or private streets.
“This code” means the energy conservation code, contained in chapter 5E, or the
construction administrative code, contained in chapter 5, or both, as the context
requires.
“Construction code” means collectively: chapter 5, the construction administrative
code; chapter 5A, the building code; chapter 5B, the residential building code; chapter
5C, the existing building code; chapter 5D, the electrical code; chapter 5E, the energy
conservation code; chapter 5F, the plumbing code; and all administrative rules adopted
pursuant to these chapters.
“Dwelling” means any building that contains one or two dwelling units used,
intended, or designed to be built, used, rented, leased, let or hired out to be occupied, or
that are occupied for living purposes.
“Dwelling unit” means a single unit providing complete independent living facilities
for one or more persons, including permanent provisions for living, sleeping, eating,
cooking, and sanitation.
“Engineer” means a person who is licensed and in good standing as a professional
engineer in the State of Hawai‘i.
“Existing building” means a building erected prior to the effective date of this
chapter, or one for which a legal permit has been issued.
“ICC” means the International Code Council.
“ICC section” means a section of a chapter of the International Energy
Conservation Code.
“IECC” means the ICC, International Energy Conservation Code, 2015 edition, as
copyrighted by the International Code Council.
“Permit” means a formal authorization issued by the authority having jurisdiction
that authorizes performance of specified work, pursuant to the construction code,
including the following chapters and all administrative rules adopted pursuant to the
following chapters:
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(1) 5, the construction administrative code;
(2) 5A, the building code;
(3) 5B, the residential building code;
(4) 5C, the existing building code;
(5) 5D, the electrical code;
(6) 5E, the energy conservation code; and
(7) 5F, the plumbing code.
“Person” means any individual, firm, partnership, association, or corporation, or its
or their successors or assigns, according to the context thereof.
“Section” means a section of a chapter of the Uniform Plumbing Code.
(2020, ord 20-61, sec 5; am 2021, ord 21-61, secs 22 and 23.) 5E-1-6
Section 5E-1-7. Compliance required.
(a) No person shall perform or cause to be performed any work which does not comply
with the provisions of this code or any permit issued pursuant to this code.
(b) No person shall perform any work covered by this code in violation of the provisions
of chapter 444, Hawai‘i Revised Statutes.
(c) Any approval or permit issued pursuant to the provisions of this code shall comply
with all applicable requirements of this code.
(d) The granting of a permit, variance, or approval of plans or specifications pursuant
to this code does not dispense with the necessity to comply with any applicable law
to which a permit holder may also be subject.
(2020, ord 20-61, sec 5.) 5E-1-7
Section 5E-1-8. Conflict.
(a) If any provisions of this code conflict with or contravene provisions of the State
Energy Code, found in chapter 3-181, Hawai‘i Administrative Rules, or the
International Energy Conservation Code, 2015 Edition, that have been
incorporated by reference, the provisions of this code shall prevail as to all matters
and questions arising out of the subject matter of such provisions.
(b) In situations where two or more provisions of this code and any applicable law,
other than those provided for in subsection (a), cover the same subject matter, the
stricter shall be complied with.
(2020, ord 20-61, sec 5.) 5E-1-8
Article 2. Installation Requirements.
Section 5E-2-1. International Energy Conservation Code adopted.
(a) The “International Energy Conservation Code, 2015 Edition” herein referred to as
the “International Energy Conservation Code,” as copyrighted and published in
2015 by the International Code Council, Incorporated, 500 New Jersey Avenue, 6th
Floor, Washington, DC 20001, is incorporated by reference and made a part of this
chapter, subject to the amendments hereinafter set forth in this article.
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The appendices of the International Energy Conservation Code are not adopted
except as provided in this article. A copy of the International Energy Conservation
Code shall be available for public inspection at the Hilo and Kailua-Kona offices of
the department of public works and at the office of the County clerk.
(b) This incorporation by reference includes all parts of the International Energy
Conservation Code, 2015 Edition, subject to the amendments hereinafter set forth.
(1) Subsection C101.1 of the International Energy Conservation Code is amended
to read as follows:
“C101.1 Title. This code shall be known as the Energy Conservation
Code and shall be cited as such. “This code” when used within the
International Energy Conservation Code as incorporated by reference
herein, means the Energy Conservation Code of the County of
Hawai‘i.”
(2) Subsections C101.2 and C101.3 of the International Energy Conservation Code
are deleted in their entirety.
(3) Subsection C101.4 of the International Energy Conservation Code is amended
to read as follows:
“C101.4 Applicability. Where, in any specific case, different sections
of this code or other adopted codes specify different materials,
methods of construction or other requirements, the code official shall
determine which code requirements shall prevail. Where there is a
conflict between a general requirement and a specific requirement, the
specific requirement shall govern.”
(4) Subsection C102.1 of the International Energy Conservation Code is amended
to read as follows:
“C102.1 General. This code is not intended to prevent the use of any
material, method of construction, design or insulating system not
specifically prescribed herein, provided that such construction, design
or insulating system has been approved by the code official as meeting
the intent of this code.
The code official may allow alternative energy conservation standards
for nonstandard building materials, unique or limitations of design,
special methods of construction, and geographical location. The code
official may require construction plans, research reports, and tests
prepared by a registered design professional in order to determine
whether to allow such lower standards.”
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(5) Subsection C103.1 of the International Energy Conservation Code is amended
to read as follows:
“C103.1 General. Construction documents and other supporting data
shall be submitted to indicate compliance with this code. The
construction documents shall be prepared, designed, approved, and
observed by a duly registered licensed professional as required by
chapter 464, Hawai‘i Revised Statutes and in accordance with the
provisions of chapter 5, Hawai‘i County Code. The licensed
professional shall certify via a signed statement on the plans, that the
project complies with this code.
Exception: Any building work that is not required to be prepared,
designed, approved, or observed by a licensed professional architect or
engineer pursuant to chapter 464, Hawai‘i Revised Statutes, shall be
certified by the owner.”
(6) Subsections C103.3.2 and C103.3.3 of the International Energy Conservation
Code are deleted in their entirety.
(7) Sections C104 and C105 of the International Energy Conservation Code are
deleted in their entirety.
(8) Sections C107 through C109 of the International Energy Conservation Code
are deleted in their entirety.
(9) Subsection C202 of the International Energy Conservation Code is amended
by adding the following new definitions to be appropriately inserted and to
read as follows:
“CODE OFFICIAL. The director of the department of public works of
the County of Hawai‘i, the director’s authorized representative, or
other designated authority charged with the administration and
enforcement of this code.”
“COOL ROOF. A cool roof is a roofing system that can deliver high
solar reflectance, and high thermal emittance as specified in table
C402.3.”
“HABITABLE SPACE. A space in a building for living, sleeping,
eating or cooking. Bathrooms, toilet rooms, closets, halls, storage or
utility spaces and similar areas are not considered habitable spaces.”
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“OCCUPIABLE SPACE. A room or enclosed space designed for
human occupancy in which individuals congregate for amusement,
educational or similar purposes or in which occupants are engaged at
labor, and which is equipped with means of egress and light and
ventilation facilities meeting the requirements of this code.”
“UNCONDITIONED FLOOR AREA. The horizontal projection of the
floors associated with the unconditioned space.”
“UNCONDITIONED SPACE. An area, room or space that is enclosed
within the building thermal envelope and is not directly nor indirectly
heated or cooled.”
(10) Subsection C401.2 of the International Energy Conservation Code is amended
to read as follows:
“C401.2 Application. Commercial buildings shall comply with one of
the following:
1. The requirements of ANSI/ASHRAE/IESNA 90.1.
2. The requirements of Sections C402 through C405. In
addition, commercial buildings shall comply with Section
C406 and tenant spaces shall comply with Section C406.1.1.
3. The requirements of Sections C402.5, C403.2, C404, C405.2,
C405.3, C405.5, C405.6 and C407. The building energy cost
shall be equal to or less than 85 percent of the standard
reference design building.
Exception: For buildings 2,500 square feet or less with 4 tons of
cooling or less where it is determined by the code official that the
building configuration is similar to that of a residential building, the
requirements in Sections R401.2.1 Tropical Zone shall be permitted to
be used.”
(11) Subsection C402.1.1 of the International Energy Conservation Code is
amended to read as follows:
“C402.1.1 Low-energy use buildings. The following low-energy use
buildings, or portions thereof separated from the remainder of the
building by building thermal envelope assemblies complying with this
section, shall be exempt from the building thermal envelope provisions
of Section C402.
1. Those with a peak design rate of energy usage less than 3.4
222
(10.7 W/m) or 1.0 watt per square foot (10.7 W/m)
Btu/hft
of floor area for space conditioning purposes.
2. Unconditioned space that does not contain occupiable space
and/or habitable space.
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3. Greenhouses.
4. Open park pavilions where there is no enclosed space.”
(12) Table C402.1.3 from the International Energy Conservation Code is deleted in
its entirety and replaced with the following:
“TABLE C402.1.3
OPAQUE THERMAL ENVELOPE INSULATION COMPONENT
a
- CLIMATE ZONE 1
MINIMUM REQUIREMENTS, R-VALUE METHOD
CLIMATE ZONE 1
All other Group R
Roofs
Insulation entirely above
R-10ci R-12.5ci
roof deck
a, bcc
Metal buildings R-30 or R-19 with cool roof R-30 or R-19 with cool roof
cc
Attic and other R-30 or R-19 with cool roof R-30 or R-19 with cool roof
Walls, above grade
dd
Mass R-5.7ci R-5.7ci
Metal building R-13 + R-6.5ci R-13 + R-6.5ci
Metal framed R-13 + R-5ci R-13 + R-5ci
Wood framed and other R-13 + R-3.8ci or R-20 R-13 + R-3.8ci or R-20
Walls, below grade
Below-grade wall NR NR
Floors
Mass NR NR
Joist/framing NR NR
Slab-on-grade floors
Unheated slabs NR NR
Heated slabs R-7.5 for 12” below R-7.5 for 12” below
Opaque doors
Nonswinging R-4.75 R-4.75
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2
For SI:1 inch = 25.4 mm, 1 pound per square foot = 4.88 kg/m,
3
1 pound per cubic foot = 16 kg/m.
ci = Continuous insulation, NR = No requirement, LS = Liner system.
a. Assembly descriptions can be found in ANSI/ASHRAE/IESNA Appendix A.
b. Where using R-value compliance method, a thermal spacer block shall be
provided, otherwise use the U-factor compliance method in Table C402.1.4.
c. Cool roof is defined as a roof with three-year aged solar reflectance of 0.55 and
3-year aged thermal emittance of 0.75 or 3-year aged solar reflectance index of 64.
d. R-5.7ci is allowed to be substituted with concrete block walls complying with
ASTM C 90, ungrouted or partially grouted at 32 inches or less on center
vertically and 48 inches or less on center horizontally, with ungrouted cores filled
2
with materials having maximum thermal conductivity of 0.44 Btu-in/h-f °F. See
Section C402.2.3.”
(13)Subsection C402.2.3 of the International Energy ConservationCode is
amended to read as follows:
“C402.2.3 Thermal resistance of above-grade walls. The
minimum thermal resistance (R-value) of materials installed in the
wall cavity between framing members and continuously on the walls
shall be as specified in Table C402.1.3, based on framing type and
construction materials used in the wall assembly.
Exceptions: Continuous insulation for wood, metal framed, and
mass walls are not required when at least one of the following
conditions is met:
1. Walls have a covering w
2. Walls have overhangs with a projection factor equal to or
greater than 0.3. The projection factor is the horizontal
distance from the surface of the wall to the farthest most
point of the overhang divided by the vertical distance from
the first floor level to the bottom most point of the overhang.
3. Concrete, CMU, and similar mass walls are 6 inches or
greater in thickness.
The R-value of integral insulation installed in concrete masonry units
shall not be used in determining compliance with Table C402.1.3.
“Mass walls” shall include walls:
2
) of wall surface
1. Weighing not less than 35 psf (170 kg/m
area.
2
) of wall surface area
2. Weighing not less than 25 psf (120 kg/m
where the material weight is not more than 120 pcf (1900
3
).
kg/m
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2 2
3. Having a heat capacity exceeding 7 Btu/ft• °F (144 kJ/m•
K).
2 2
4. Having a heat capacity exceeding 5 Btu/ft• °F (103 kJ/m•
K), where the material weight is not more than 120 pcf (1900
3
kg/m).”
(14) Table C402.4 from the International Energy Conservation Code is deleted in
its entirety and replaced with the following:
“TABLE C402.4
BUILDING ENVELOPE FENESTRATION
MAXIMUM U-FACTOR AND SHGC REQUIREMENTS -
CLIMATE ZONE 1
CLIMATE ZONE 1
Vertical fenestration
U-factor
Fixed fenestration 0.50
Operable fenestration 0.65
Entrance doors 1.10
b
SHGC
a
Orientation SEW N
PF < 0.2 0.25 0.33
0.30 0.37
0.40 0.40
Skylights
U-factor 0.75
SHGC 0.35
NR = No requirement, PF = Projection factor.
a. “N” indicates vertical fenestration oriented within 45 degrees of true north.
“SEW” indicates orientations other than “N.” For buildings in the southern
hemisphere, reverse south and north.
b. Exception: Jalousie windows are exempt from SHGC requirements.”
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(15) A new subsection C402.4.3.5 is added to the International Energy
Conservation Code to read as follows:
“C402.4.3.5 Area-weighted SHGC. In commercial buildings, an
area-weighted average of fenestration products shall be permitted to
satisfy SHGC requirements.
Exception: Jalousie windows are exempt from SHGC requirements.”
(16) Subsection C402.5 of the International Energy Conservation Code is amended
to read as follows:
“C402.5 Air leakage-thermal envelope (Mandatory). The thermal
envelope of buildings shall comply with Sections C402.5.1 through
C402.5.8, or the building thermal envelope shall be tested in
accordance with ASTM E 779 at a pressure differential of 0.3 inch
water gauge (75 Pa) and deemed to comply with the provisions of this
section when the tested air leakage rate of the building thermal
2 2
(0.2 L/s• m). Where
envelope is not greater than 0.40 cfm/ft
compliance is based on such testing, the building shall also comply
with Sections C402.5.5, C402.5.6 and C402.5.7.”
(17) A new subsection C403.2.4.2.4 is added to the International Energy
Conservation Code to read as follows:
“C403.2.4.2.4 Door switches. Opaque and glass doors opening to the
outdoors in hotel and motel sleeping units, guest suites, and time-
share condominiums, shall be provided with controls that disable the
mechanical cooling or reset the cooling setpoint to 90° F or greater
within five minutes of the door opening. Mechanical cooling may
remain enabled if the outdoor air temperature is below the space
temperature.”
(18) Subsection C405.2 of the International Energy Conservation Code is amended
to read as follows:
“C405.2 Lighting controls (Mandatory). Lighting systems shall be
provided with controls as specified in Sections C405.2.1, C405.2.2,
C405.2.3, C405.2.4 and C405.2.5.
Exceptions: Lighting controls are not required for the following:
1. Areas designated as security or emergency areas that are
required to be continuously lighted.
2. Interior exit stairways, interior exit ramps and exit
passageways.
3. Emergency egress lighting that is normally off.
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4. Spaces where the designed lighting power densities are less
than 70% of the lighting power densities specified in Table
C405.4.2(1) and Table C405.4.2(2).”
(19) Subsection C405.2.4 of the International Energy Conservation Code is
amended to read as follows:
“C405.2.4 Specific application controls. Specific application
controls shall be provided for the following:
1. Display and accent light shall be controlled by a dedicated
control that is independent of the controls for other lighting
within the room or space.
2. Lighting in cases used for display case purposes shall be
controlled by a dedicated control that is independent of the
controls for other lighting within the room or space.
3. Hotel and motel sleeping units, guest suites, and time-share
condominiums shall have a master control device that is
capable of automatically switching off all installed luminaires
and switched receptacles within 20 minutes after all
occupants leave the room.
Exception: Lighting and switched receptacles controlled by
captive key systems.
4. Supplemental task lighting, including permanently installed
under-shelf or under-cabinet lighting, shall have a control
device integral to the luminaires or be controlled by a wall-
mounted control device provided that the control device is
readily accessible.
5. Lighting for nonvisual applications, such as plant growth and
food warming, shall be controlled by a dedicated control that
is independent of the controls for other lighting within the
room or space.
6. Lighting equipment that is for sale or for demonstrations in
lighting education shall be controlled by a dedicated control
that is independent of the controls for other lighting within
the room or space.”
(20) A new subsection C405.10 is added to the International Energy Conservation
Code to read as follows:
“C405.10 Sub-metering (Mandatory). In new buildings with
tenants, metering shall be collected for the entire building and
individually for each tenant occupying 1,000 ft² (total enclosed and
unenclosed) (93 m³) or more. Tenants shall have access to data
collected for their space. A tenant is defined as “one who rents or
leases from a landlord.”
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(21) Subsection C406.3 of the International Energy Conservation Code is amended
to read as follows:
“C406.3 Reduced lighting power density. The total interior
lighting power (watts) of the building shall be determined by using 80
percent of the lighting power values specified in Table C405.4.2(1)
times the floor area for the building types, or by using 80 percent of
the interior lighting power allowance calculated by the Space-by-Space
Method in Section C405.4.2.”
(22) Subsection C408.2 of the International Energy Conservation Code is amended
to read as follows:
“C408.2 Mechanical systems and service water-heating systems
commissioning and completion requirements. The registered
design professional or approved agency shall provide evidence of
mechanical systems commissioning and completion in accordance with
the provisions of this section to the owner or owner’s authorized agent.
Construction document notes shall clearly indicate provisions for
commissioning and completion requirements in accordance with this
section and are permitted to refer to specifications for further
requirements. Copies of all documentation shall be given to the owner
or owner’s authorized agent and made available to the code official
upon request in accordance with Sections C408.2.4 and C408.2.5.
Exceptions: The following systems are exempt:
1. Mechanical systems and service water heater systems in
buildings where the total mechanical equipment capacity is
less than 480,000 Btu/h (140.7 kW) cooling capacity and
600,000 Btu/h (175.8 kW) combined service water-heating
and space-heating capacity.
2. Systems included in Section C403.3 that serve individual
dwelling units and sleeping units.”
(23) Subsection C408.2.4.1 of the International Energy Conservation Code is
deleted in its entirety.
(24) Subsection C408.3.1 of the International Energy Conservation Code is
amended to read as follows:
“C408.3.1 Functional Testing. The registered design professional
shall provide to the owner or owner’s representative evidence that the
lighting control systems have been tested to ensure that control
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hardware and software are calibrated, adjusted, programmed and in
proper working condition in accordance with the construction
documents and manufacturer’s instructions. Functional testing shall
be in accordance with Sections C408.3.1.1 and C408.3.1.2 for the
applicable control type.”
(25) Subsection C501.4 of the International Energy Conservation Code is amended
to read as follows:
“C501.4 Compliance. Alterations, repairs, additions and changes of
occupancy to, or relocation of, existing buildings and structures shall
comply with the provisions and regulations for alterations, repairs,
additions and changes of occupancy or relocation, as adopted by the
building official.”
(26) Subsection C503.3.1 of the International Energy Conservation Code is
amended to read as follows:
“C503.3.1 Roof replacement. Roof replacement of uninsulated roofs
shall include at least one of the following:
1. Energy Star compliant roof covering;
2. Radiant barrier; or
3. Attic ventilation via solar attic fan(s), or ridge ventilation, or
gable ventilation.”
(27) Subsection R101.1 of the International Energy Conservation Code is amended
to read as follows:
“R101.1 Title. This code shall be known as the Energy Conservation
Code, and shall be cited as such. “This code” when used within the
International Energy Conservation Code as incorporated by reference
herein, means the Energy Conservation Code of Hawai‘i County.”
(28) Subsection R103.1 of the International Energy Conservation Code is amended
to read as follows:
“R103.1 General. Construction documents and other supporting data
shall be submitted to indicate compliance with this code. The
construction documents shall be prepared, designed, approved, and
observed by a duly registered licensed professional as required by
chapter 464, Hawai‘i Revised Statutes and in accordance with the
provisions of chapter 5, Hawai‘i County Code. The licensed
professional shall certify via a signed statement on the plans, that the
project complies with this code.
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Exception: Any building, electrical, or plumbing work that is not
required to be prepared, designed, approved, or observed by a licensed
professional architect or engineer pursuant to chapter 464, Hawai‘i
Revised Statutes, shall be certified by the owner.”
(29) Subsections R103.3.2 and R103.3.3 of the International Energy Conservation
Code are deleted in their entirety.
(30) Subsection R202 of the International Energy Conservation Code is amended
by adding the following new definitions to be appropriately inserted and to
read as follows:
“CODE OFFICIAL. The director of the department of public works of
the County of Hawai‘i, the director’s authorized representative, or
other designated authority charged with the administration and
enforcement of this code.”
“COOL ROOF. A cool roof is a roofing system that can deliver high
solar reflectance, and high thermal emittance as specified in table
C402.3.”
“HABITABLE SPACE. A space in a building for living, sleeping,
eating or cooking. Bathrooms, toilet rooms, closets, halls, storage or
utility spaces, garages or carports, and similar areas are not
considered habitable spaces.”
“OCCUPIABLE SPACE. A room or enclosed space designed for
human occupancy in which individuals congregate for amusement,
educational or similar purposes or in which occupants are engaged at
labor, and which is equipped with means of egress and light and
ventilation facilities meeting the requirements of this code.”
“UNCONDITIONED FLOOR AREA. The horizontal projection of the
floors associated with the unconditioned space.”
“UNCONDITIONED SPACE. An area, room or space that is enclosed
within the building thermal envelope and is not directly nor indirectly
heated or cooled.”
(31) Subsection R401.2 of the International Energy Conservation Code is amended
to read as follows:
“R401.2 Compliance. Projects shall comply with one of the following:
1. Sections R401.3 through R404.
2. Section R405 and the provisions of Sections R401 through
R404 labeled “Mandatory.”
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3. An energy rating index (ERI) approach in Section R406.
4. The tropical zone requirements in Section R401.2.1 and
R401.3.”
(32) Subsection R401.2.1 of the International Energy Conservation Code is
amended to read as follows:
“R401.2.1 Tropical zone. Residential buildings in the tropical zone
at elevations below 5,000 feet above sea level shall be deemed to
comply with this chapter where the following conditions are met:
1. Not more than one-half of the dwelling unit area is air
conditioned.
2. The dwelling unit is not heated.
3. Solar, wind, or other renewable energy source supplies not
less than 90 percent of the energy for service water heating.
Exception: A water heating device as approved via Solar
Hot Water Heater Variance by the Department of Business,
Economic Development & Tourism, Hawai‘i State Energy
Office.
4. Glazing in dwelling units shall have a maximum solar heat
gain coefficient as specified in Table R401.2.1.
TABLE 401.2.1
VERTICAL FENESTRATION GLAZING SHGC REQUIREMENTS
PROJECTION FACTOR
(pf) OF OVERHANG
FROM BASE OF
SHGC
AVERAGE VERTICAL
FENESTRATION
GLAZING SILL*
< 0.30 0.25
0.30 – 0.49 0.40
N/A
*Exceptions:
a. North-facing vertical fenestration glazing with pf > 0.20 are exempt from
SHGC requirements. Overhangs shall extend 2 feet on each side of vertical
fenestration glazing or to nearest wall, whichever is less.
b. Jalousie windows are exempt from SHGC requirements.
c. “N” indicates vertical fenestration oriented within 45 degrees of true north.
“SEW” indicates orientations other than “N”.
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§ 5E-2-1 H AWAI‘I C OUNTY C ODE
5. Skylights in dwelling units shall have a maximum U-factor
as specified in Table R402.1.2.
6. Permanently installed lighting is in accordance with Section
R404.
7. The roof/ceiling complies with one of the following options:
A. Comply with one of the roof surface options in Table
C402.3 and install R-13 insulation or greater.
B. Install R-19 insulation or greater.
If present, attics above the insulation are vented and
attics below the insulation are unvented.
Exception: The roof/ceiling assembly is permitted to
comply with Section R407.
8. Operable fenestration provides ventilation area equal to not
less than 14 percent of the floor area in each habitable room.
Alternatively, equivalent ventilation of 2 air changes per hour
is provided by a mechanical ventilation fan.
9. Bedrooms with exterior walls facing two different directions
have operable fenestration on exterior walls facing two
different directions.
10. Interior doors to bedrooms are capable of being secured in the
open position.
11. A ceiling fan, ceiling fan rough-in, or whole-house fan is
provided for bedrooms and the largest space that is not used
as a bedroom.
12. Walls, floors, and ceilings separating air conditioned spaces
from non-air conditioned spaces shall be constructed to limit
air leakage in accordance with the requirements in Table
R402.4.1.1. Blower door test is optional.”
(33) Subsection R401.3 of the International Energy Conservation Code is amended
to read as follows:
“R401.3 Certificate (Mandatory). A permanent certificate shall be
completed by the builder or registered design professional and posted
on a wall in the space where the furnace is located, a utility room or
an approved location inside the building. Where located on an
electrical panel, the certificate shall not cover or obstruct the visibility
of the circuit directory label, service disconnect label or other required
labels. The certificate shall:
1. List the predominant R-values of insulation installed in or on
ceiling/roof, walls, and ducts outside conditioned spaces; U-
factors for fenestration and the solar heat gain coefficient
(SHGC) of fenestration, and the results from any required
duct system and building envelope air leakage testing done
SUPP. 9 (1-2021)
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on the building. Where there is more than one value for each
component, the certificate shall list the value covering the
largest area.
2. List the types and efficiencies of heating, cooling and service
water heating equipment. Where a gas-fired unvented room
heater, electric furnace or baseboard electric heater is
installed in the residence, the certificate shall list “gas-fired
unvented room heater,” “electric furnace” or “baseboard
electric heater,” as appropriate. An efficiency shall not be
listed for gas-fired unvented room heaters, electric furnaces
or electric baseboard heaters.
3. Indicate which areas have been designed and constructed as
conditioned or unconditioned space.
4. Include the following text: “The addition of mechanical
cooling or heating to an unconditioned space requires a
permit. The addition of cooling without proper design and
construction can have adverse health, safety, and
conservation consequences.””
(34) Subsection R402.1 of the International Energy Conservation Code is amended
to read as follows:
“R402.1 General (Prescriptive).
The building thermal envelope shall meet the requirements of Sections
R402.1.1 through R402.1.5.
Exception: The following low-energy buildings, or portions thereof,
separated from the remainder of the building by building thermal
envelope assemblies complying with this section shall be exempt from
the building thermal envelope provisions of Section R402.
1. Those with a peak design rate of energy usage less than 3.4
Btu/h•ft² (10.7 W/m²) or 1.0 watt/ft² (10.7 W/m²) of floor area
for space-conditioning purposes.
2. Unconditioned space that does not contain habitable space.
3. Unconditioned dwellings with enclosed habitable areas less
than 1,100 square feet.
4. Dwellings with permitted, off-grid, self supplying photovoltaic
with battery back up.”
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(35) TABLE R402.1.2 of the International Energy Conservation Code is deleted in
its entirety and replaced with the following:
“TABLE R402.1.2
a
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT
CLIMATE FENES-SKYLIGHT GLAZED CEILING WOOD MASS FLOOR BASEMENT SLAB CRAWL
bd
ZONE TRATION U-FACTOR FENES- R-VALUE FRAME WALL R-VALUE WALL R-VALUE SPACE
e, f
U-TRATION WALL R-VALUE R-VALUE & DEPTH WALL
bb, c, gd
FACTORSHGC R-VALUE R-VALUE
1 NR 0.75 0.25 3013 3/4 000 0
For SI: 1 foot = 304.8 mm
a. R-values are minimums. U-factors and SHGC are maximums. When insulation is
installed in a cavity which is less than the label or design thickness of the
insulation, the installed R-value of the insulation shall not be less than the R-
value specified in the table.
b. The fenestration U-factor column excludes skylights. The SHGC column applies to
all glazed fenestration. Exception: Skylights may be excluded from glazed
fenestration SHGC requirements in climate zones 1 through 3 where the SHGC
for such skylights does not exceed 0.30.
c. Exception: If fenestration have overhangs with projection factors, the maximum
solar heat gain coefficient shall be as specified in Table R401.2.1.
d. R402.1.2 and R402.2 allow use of R407.
e. The second R-value applies when more than half the insulation is on the interior
of the mass wall.
f. Exception: R-value for mass walls are not required if: mass walls have a covering
mass walls have overhangs with a projection factor
equal to or greater than 0.3. CMU or similar mass walls are 6 inches or greater in
thickness.
g. Exception: Jalousie windows are exempt from SHGC requirements.”
(36) Subsection R402.1.2 of the International Energy Conservation Code is
amended to read as follows:
“R402.1.2 Insulation and fenestration criteria (Prescriptive).
The building thermal envelope shall meet the requirements of Table
R402.1.2,
Exception: Insulation values of above-grade walls and ceilings shall
be permitted to comply with Section R407.”
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(37) Subsection R402.2 of the International Energy Conservation Code is amended
to read as follows:
“R402.2 Specific insulation requirements (Prescriptive).
In addition to the requirements of Section R402.1, insulation shall
meet the specific requirements of Sections R402.2.1 through
R402.2.13.
Exception: Above-grade walls and ceilings shall be permitted to
comply with Section R407.”
(38) Subsection R402.2.5 of the International Energy Conservation Code is
amended to read as follows:
“R402.2.5 Mass walls. Mass walls for the purposes of this chapter
shall be considered above-grade walls of concrete block, concrete,
insulated concrete form (ICF), masonry cavity, brick (other than brick
veneer), earth (adobe, compressed earth block, rammed earth) and
solid timber/logs, or any other walls having a heat capacity greater
22
x °F (123 kJ/m x K).
than or equal to 6 Btu/ft
Exception: Insulation or R-value for mass walls, indicated in Table
R402.1.2, is not required when at least one of the following conditions
is met:
1.
2. Walls have overhangs with a projection factor equal to or
greater than 0.3. The projection factor is the horizontal
distance from the surface of the wall to the farthest most
point of the overhang divided by the vertical distance from
the first floor level to the bottom most point of the overhang.
3. Concrete, CMU, and similar mass walls are 6 inches or
greater in thickness.”
(39) Subsection R402.3.2 of the International Energy Conservation Code is
amended to read as follows:
“R402.3.2 Glazed fenestration SHGC. Fenestration shall have a
maximum solar heat gain coefficient as specified in Table R402.1.2.
An area-weighted average of fenestration products more than 50-
percent glazed shall be permitted to satisfy the SHGC requirements.
Exceptions:
1. Jalousie windows are exempt from SHGC requirements.
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§ 5E-2-1 H AWAI‘I C OUNTY C ODE
2. If fenestrations have overhangs with projection factors, the
maximum solar heat gain coefficient shall be as specified in
Table R401.2.1.
Dynamic glazing shall be permitted to satisfy the SHGC requirements
of Table R402.1.2 provided the ratio of the higher to lower labeled
SHGC is greater than or equal to 2.4, and the dynamic glazing is
automatically controlled to modulate the amount of solar gain into the
space in multiple steps. Dynamic glazing shall be considered
separately from other fenestration, and area-weighted averaging with
other fenestration that is not dynamic glazing shall not be permitted.
Exception: Dynamic glazing is not required to comply with this
section when both the lower and higher labeled SHGC already comply
with the requirements of Table R402.1.2.”
(40) Subsection R402.4.1.2 of the International Energy Conservation Code is
amended to read as follows:
“R402.4.1.2 Testing. The building or dwelling unit may be tested and
verified as having an air leakage rate not exceeding five air changes
per hour in Climate Zones 1 and 2, and three air changes per hour in
Climate Zones 3 through 8. Testing shall be conducted in accordance
with ASTM E 779 or ASTM E 1827 and reported at a pressure of 0.2
inch w.g. (50 Pascals). Testing shall be performed at any time after
creation of all penetrations of the building thermal envelope.
During testing:
1. Exterior windows and doors, fireplace and stove doors shall
be closed, but not sealed, beyond the intended
weatherstripping or other infiltration control measures.
2. Dampers including exhaust, intake, makeup air, backdraft
and flue dampers shall be closed, but not sealed beyond
intended infiltration control measures.
3. Interior doors, if installed at the time of the test, shall be
open.
4. Exterior doors for continuous ventilation systems and heat
recovery ventilators shall be closed and sealed.
5. Heating and cooling systems, if installed at the time of the
test, shall be turned off.
6. Supply and return registers, if installed at the time of the
test, shall be fully open.”
SUPP. 9 (1-2021)
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(41) A new subsection R403.5.5 is added to the International Energy Conservation
Code to read as follows:
“R403.5.5 Solar water heating. Solar water heating systems are
required for new single-family residential construction pursuant to
section 196-6.5, Hawai‘i Revised Statutes.
Exception: A water heating device as approved via Solar Hot Water
Heater Variance by the Department of Business, Economic
Development & Tourism, Hawai‘i State Energy Office.”
(42) A new subsection R404.2 is added to the International Energy Conservation
Code to read as follows:
“R404.2 Ceiling Fans.A ceiling fan, ceiling fan rough-in, or whole
house fan may be provided for bedrooms and the largest habitable
space that is not used as a bedroom.”
(43) A new subsection R404.3 is added to the International Energy Conservation
Code to read as follows:
“R404.3 Electrical vehicle charger power. An electrical rough-in
of a 30 amp circuit for future electrical vehicle charger may be
installed in garage/carport area.”
(44) TABLE 405.5.2(1) of the International Energy Conservation Code is amended
to read as follows:
“TABLE R405.5.2(1)
SPECIFICATIONS FOR THE STANDARD REFERENCE AND
PROPOSED DESIGNS
BUILDING
STANDARD REFERENCE DESIGN PROPOSED DESIGN
COMPONENT
Type: mass wall if proposed wall is mass;
As proposed
otherwise wood frame
Gross area: same as proposed As proposed
Above-grade walls
U-factor: asspecified in Table R402.1.4 As proposed
Solar absorptance = 0.75 As proposed
Emittance = 0.90As proposed
Type: same as proposed As proposed
Basement and crawl Gross area: same as proposed As proposed
space walls
U-factor: from Table R402.1.4, with
As proposed
insulation layer on interior side of walls
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§ 5E-2-1 H AWAI‘I C OUNTY C ODE
Type: wood frameAs proposed
Above-grade floorsGross area: same as proposedAs proposed
U-factor: as specified in Table R402.1.4 As proposed
Type: wood frameAs proposed
Ceilings Gross area: same as proposed As proposed
U-factor: as specified in Table R402.1.4As proposed
Type: composition shingle on wood
As proposed
sheathing
Gross area: same as proposed As proposed
Roofs
Solar absorptance = 0.75 As proposed
Emittance= 0.90As proposed
2
Type: vented with aperture = 1 ft per
i
AtticsAs proposed
2
300 ft ceiling area
Type: same as proposed As proposed
Foundation wall area above and below
Foundations
grade and soil characteristics: same as As proposed
proposed
2
Area:40 ft As proposed
Orientation: NorthAs proposed
Opaque doors
U-factor: same as fenestration from Table
As proposed
R402.1.4
h
Total area=
(a) The proposed glazing area, where the
proposed glazing area is less than 15
percent of the conditioned floor area
As proposed
(b) 15 percent of the conditioned floor
area, where the proposed glazing area
is 15 percent or more of the
conditioned floor area
Orientation: equally distributed to four
Vertical fenestration
cardinal compass orientations (N, E, S & As proposed
other than opaque
W).
doors
U-factor: as specified in Table R402.1.4As proposed
SHGC: as specified in Table R402.1.2
except that for climates with no
As proposed
requirement (NR) SHGC = 0.40 shall be
used.
Interior shade fraction: 0.92 - (0.21 × 0.92 -(0.21 × SHGC as
SHGC for the standard reference design) proposed)
External shading: noneAs proposed
Skylights None As proposed
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Thermally isolated
None As proposed
sunrooms
Air leakage rate of 5 air changes per hour For residences that are
in climate zones 1 and 2, and 3 air changes not tested, the same air
per hour in climate zones 3 through 8 at a leakage rate as the
pressure of 0.2 inches w.g (50 Pa). The standard reference
mechanical ventilation rate shall be in design.
addition to the air leakage rate and the For tested residences, the
Air exchange ratesame as in the proposed design, but no measured air exchange
a
greater than 0.01 × CFA + 7.5 × (N+ 1) rate.
br
where: The mechanical
b
CFA = conditioned floor area ventilation rate shall be
= number of bedrooms
N in addition to the air
br
Energy recovery shall not be assumed for leakage rate and shall be
mechanical ventilation. as proposed.
None, except where mechanical ventilation
is specified by the proposed design, in
which case:
Annual vent fan energy use:
Mechanical
kWh/yr = 0.03942 × CFA + 29.565 × As proposed
ventilation
+ 1)
(N
br
where:
CFA = conditioned floor area
N = number of bedrooms
br
IGain = 17,900 + 23.8 × CFA + 4104 × N Same as standard
br
Internal gains
(Btu/day per dwelling unit) reference design
Same as standard
reference design, plus any
additional mass
An internal mass for furniture and
specifically designed as a
Internal mass contents of 8 pounds per square foot of
c
thermal storage element
floor area
but not integral to the
building envelope or
structure.
For masonry floor slabs, 80 percent of floor
area covered by R-2 carpet and pad, and
As proposed
20 percent of floor directly exposed to room
air.
For masonry basement walls, as proposed,
Structural mass
but with insulation required by Table
As proposed
R402.1.4 located on the interior side of the
walls
For other walls, for ceilings, floors, and
As proposed
interior walls, wood frame construction
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5E-23
§ 5E-2-1 H AWAI‘I C OUNTY C ODE
Fuel type: same as proposed design.As proposed
Efficiencies: As proposed
Electric: Air-source heat pump with
prevailing federal minimum standards.
Nonelectric furnaces: natural gas furnace As proposed
d, e
Heating systems
with prevailing federal minimum
standards.
Nonelectric boilers: natural gas boiler with As proposed
prevailing federal minimum standards.
Capacity: sized in accordance with Section As proposed
R403.7.
Fuel type: Electric
Efficiency: in accordance with prevailing
As proposed
d, f
Cooling systems
federal minimum standards.
Capacity: sized in accordance with Section
As proposed
R403.7.
Fuel type: same as proposed designAs proposed
Efficiency: in accordance with prevailing As proposed
Service water
federal minimum standards.
d, e, f, g
heating
Use: Same as proposed design gal/day = 30 +
(10 × N)
br
Duct insulation: From Section R403.2.1
A thermal distribution system efficiency
(DSE) of 0.88 shall be applied to both the
As tested or as specified
heating and cooling system efficiencies for
Thermal distribution in Table R405.5.2(2) if not
all systems other than tested duct
systems tested. Duct insulation
systems. For tested duct systems, the
shall be as proposed.
leakage rate shall be 4 cfm (113.3 L/min)
22
(9.29 m) of conditioned floor
per 100 ft
area at a pressure of differential of 0.1
inches w.g. (25 Pa).
Type: Manual, cooling temperature
Same as standard
Thermostat setpoint = 75°F;
reference
Heating temperature setpoint = 72°F
2
For SI: 1 square foot = 0.93 m, 1 British thermal unit = 1055 J, 1 pound per square
2
, 1 gallon (US) = 3.785 L, °C = (°F-32)/1.8, 1 degree = 0.79 rad.
foot = 4.88 kg/m
a. Where required by the code official, testing shall be conducted by an approved
party. Hourly calculations as specified in the ASHRAE Handbook of
Fundamentals, or the equivalent shall be used to determine the energy loads
resulting from infiltration.
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b.The combined air exchange rate for infiltration and mechanical ventilation shall
be determined in accordance with Equation 43 of 2001 ASHRAE Handbook of
Fundamentals, page 26.24 and the “Whole-house Ventilation” provisions of 2001
ASHRAE Handbook of Fundamentals, page 26.19 for intermittent mechanical
ventilation.
c. Thermal storage element shall mean a component not part of the floors, walls or
ceilings that is part of a passive solar system, and that provides thermal storage
such as enclosed water columns, rock beds, or phase-change containers. A thermal
storage element must be in the same room as fenestration that faces within 15
degrees (0.26 rad) of true south, or must be connected to such a room with pipes or
ducts that allow the element to be actively charged.
d. For a proposed design with multiple heating, cooling or water heating systems
using different fuel types, the applicable standard reference design system
capacities and fuel types shall be weighted in accordance with their respective
loads as calculated by accepted engineering practice for each equipment and fuel
type present.
e. For a proposed design without a proposed heating system, a heating system with
the prevailing federal minimum efficiency shall be assumed for both the standard
reference design and proposed design.
f. For a proposed design home without a proposed cooling system, an electric air
conditioner with the prevailing federal minimum efficiency shall be assumed for
both the standard reference design and the proposed design.
g. For a proposed design with a nonstorage-type water heater, a 40-gallon storage-
type water heater with the prevailing federal minimum energy factor for the same
fuel as the predominant heating fuel type shall be assumed. For the case of a
proposed design without a proposed water heater, a 40-gallon storage-type water
heater with the prevailing federal minimum efficiency for the same fuel as the
predominant heating fuel type shall be assumed for both the proposed design and
standard reference design.
h. For residences with conditioned basements, R-2 and R-4 residences and
townhouses, the following formula shall be used to determine glazing area:
AF = As × FA × F
where:
AF = Total glazing area
A=Standard reference design total glazing area.
s
FA = (Above-grade thermal boundary gross wall area)/(above-grade boundary wall
area + 0.5 × below-grade boundary wall area).
F = (Above-grade thermal boundary wall area)/(above-grade thermal boundary
wall area + common wall area) or 0.56, whichever is greater.
and where:
Thermal boundary wall is any wall that separates conditioned space from
unconditioned space or ambient conditions.
Above-grade thermal boundary wall is any thermal boundary wall component not
in contact with soil.
Below-grade boundary wall is any thermal boundary wall in soil contact.
Common wall area is the area of walls shared with an adjoining dwelling unit.
L and CFA are in the same units.
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§ 5E-2-1 H AWAI‘I C OUNTY C ODE
i.Unvented Attic Spaces. The atticspaceshallbe permitted to be unvented when
the design professional determines it would be beneficial to eliminate ventilation
openings to reduce salt-laden air and maintain relative humidity 60 percent or
lower to:
(1) Avoid corrosion to steel components,
(2) Avoid moisture condensation in the attic space, or
(3) Minimize energy consumption for air conditioning or ventilation by
maintaining satisfactory space conditions in both the attic and occupied
space below.”
(45)A new section R407 is added to the International Energy Conservation Code to
read as follows:
“SECTION R407
POINTS OPTION
R407.1 General (Prescriptive). Above-grade walls and roofs are
permitted to comply with the points option as an alternative to
complying with Sections R401.2.1, R402.1.2 and R402.2.
R407.2 Requirements. One or more efficiency measures shall be
selected for roof and above-grade wall systems from Table R407.1 that
cumulatively equal or exceed 0 (zero) points. As an alternative, above-
grade walls and roofs are permitted to comply separately by scoring 0
(zero) or greater.
TABLE R407.1
POINTS OPTION
Standard Tropical
Home Home
Points Points
Wood Framed
R-19 Roof Insulation-10
R-19 Roof Insulation + Cool roof
0 1
ac
membrane or RadiantBarrier
Roof Insulation
(Must choose 1) R-19 Roof Insulation + Attic
0 1
b
Venting
R-30 Roof Insulation 0 1
R-13 Cavity Wall Insulation 0 1
R-13 Wall Insulation + high
1 2
d
reflectance walls
Wall Insulation
R-13 Wall Insulation + 90% high
(Must choose 1) efficacy lighting and Energy Star 1 2
e
Appliances
R-13 Wall Insulation + exterior
1 2
f
shading wpf=0.3
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g
Ductless Air Conditioner11
1.071 X Federal Minimum SEER
1 1
Mechanical / Electrical
for Air Conditioner
Systems
1.142 X Federal Minimum SEER
(Choose ONLY if applies to
2 2
for Air Conditioner
scope of work)
Not
No air conditioning installed 2
Applicable
11
-1 -1
Must choose if applies to new
h
Energy Star Fans1 1
construction and/or additions
(House floor area to be
Install 1 kW or greater of solar
11
considered as existing dwelling
electric
size plus new square footage)
Reduce fenestration from 14% to Not
-1
10% Applicable
Metal Framed
R-13 + R 3 Wall Insulation 0 1
R-13 cavity Wall Insulation + R-0-1 0
R-13 Wall Insulation + high
0 1
d
reflectance walls
Wall Insulation
R-13 Wall Insulation + 90% high
(Must choose 1)
efficacy lighting and Energy Star 1 2
e
Appliances
R-13 Wall Insulation+ exterior
0 1
f
shading wpf=0.3
R-30 Roof Insulation 0 1
R-19 Roof Insulation -1 0
a
Roof Insulation
R-19 + Cool roof membrane or
0 1
c
(Must choose 1)
Radiant Barrier
R-19 Roof Insulation + Attic
0 1
b
Venting
g
Ductless Air Conditioner 1 1
1.071 X Federal Minimum SEER
1 1
Mechanical / Electrical
for Air Conditioner
Systems
1.142 X Federal Minimum SEER
(Choose ONLY if applies to 2 2
for Air Conditioner
scope of work)
Not
No air conditioning installed 2
Applicable
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§ 5E-2-1 H AWAI‘I C OUNTY C ODE
11
-1-1
Must choose if applies to new
Energy Star Fans7 1 1
construction and/or additions
(house floor area to be
Install 1 kW or greater of solar
11
considered as existing dwelling
electric
size plus new square footage)
Reduce fenestration from 14% to Not
-1
10% Applicable
SF = Square Feet
a. Cool roof with three-year aged solar reflectance of 0.55 and 3-year aged thermal
emittance of 0.75 or 3-year aged solar reflectance index of 64.
2
b. One cfm/ftattic venting.
c. Radiant barrier shall have an emissivity of no greater than 0.05 as tested in
accordance with ASTM E-408. The radiant barrier shall be installed in accordance
with the manufacturer’s installation instructions.
d. Walls with covering with a reflectance of
e. Energy Star rated appliances include refrigerators, dishwashers, and clothes
washers and must be installed for the final inspection.
f. The wall projection factor is equal to the horizontal distance from the surface of
the wall to the farthest most point of the overhang divided by the vertical distance
from the first floor level to the bottom most point of the overhang.
g. All air conditioning systems in the house must be ductless to qualify for this
credit.
h. Install ceiling fans in all bedrooms and the largest habitable space that is not
used as a bedroom.”
(46) Subsection R501.4 of the International Energy Conservation Code is amended
to read as follows:
“R501.4 Compliance. Alterations, repairs, additions and changes of
occupancy to, or relocation of, existing buildings and structures shall
comply with the provisions and regulations for alterations, repairs,
additions and changes of occupancy or relocation, as adopted by the
code official.”
(47) Subsection R502.1 of the International Energy Conservation Code is amended
to read as follows:
“R502.1 General. Additions to an existing building, building system
or portion thereof shall conform to the provisions of this code as those
provisions relate to new construction without requiring the unaltered
portion of the existing building or building system to comply with this
code. Additions shall not create an unsafe or hazardous condition or
overload existing building systems. An addition shall be deemed to
comply with this code where the addition alone complies, where the
existing building and addition comply with this code as a single
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building, or where the building with the addition uses no more energy
than the existing building. Additions shall be in accordance with
Section R502.1.1 or R502.1.2.
Exceptions:
1. When addition includes unconditioned space that does not
contain habitable space.
2. When both the existing building and addition are entirely
comprised of habitable unconditioned space if total square
footage does not increase more than 1,100 square feet.”
(48) Subsection R503.1.1 of the International Energy Conservation Code is
amended to read as follows:
“R.503.1.1 Building envelope. Building envelope assemblies that
are part of the alteration shall comply with Section R402.1.2 or
R402.1.4, Sections R402.2.1 through R402.2.13, R402.3.1, R402.3.2,
R402.4.3 and R402.4.4.
Exception: The following alterations need not comply with the
requirements for new construction provided the energy use of the
building is not increased:
1. Storm windows installed over existing fenestration.
2. Existing ceiling, wall or floor cavities exposed during
construction provided that these cavities are filled with
insulation.
3. Construction where the existing roof, wall or floor cavity is
not exposed.
4. Roof recover.
5. Roof replacement of uninsulated roofs which include at least
one of the following:
a. Energy Star compliant roof covering;
b. Radiant barrier; or
c. Attic ventilation via solar attic fans or ridge ventilation
or gable ventilation.
6. Surface-applied window film installed on existing single pane
fenestration assemblies to reduce solar heat gain provided
the code does not require the glazing or fenestration assembly
to be replaced.”
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(49) Subsection R503.2 of the International Energy Conservation Code is amended
to read as follows:
“R503.2 Change in space conditioning.
Any nonconditioned or low-energy space that is altered to become
conditioned space shall be required to be brought into full compliance
with this code.
Exceptions:
1. Where the simulated performance option in Section R405 is
used to comply with this section, the annual energy cost of
the proposed design is permitted to be 110 percent of the
annual energy cost otherwise allowed by Section R405.3.
2. When specified in the tropical zone, and the total conditioned
space does not exceed 50% of the habitable floor area, and, R-
19 is installed over the conditioned space, and Split ductless
air conditioner systems with a SEER rating in the top 25% of
readily available units are installed.”
(2020, ord 20-61, sec 5.) 5E-2-1
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