Haw. Code R. § tit. 3, Building Code Council, State Energy Conservation Code, subch. 2, 27

Current through November, 2024

Points option

Section R407 is added to the IECC to read as follows:

SECTION R407

POINTS OPTION

R407.1 General (Prescriptive). Above-grade walls and roof/ceiling assemblies are permitted to comply with the points option as an alternative to complying with Section R401.2.l and R402.2.

R407.2 Requirements. One or more efficiency measures shall be selected for roof/ceiling and above-grade wall systems from Table R407.l that cumulatively equal or exceed 0 (zero) points.

As an alternative, above-grade walls and roof/ceilings are permitted to comply separately by scoring 0 (zero) or greater.

TABLE R407.1

POINTS OPTION

Walls	Standard Home Points	Tropical Home Points
Wood Framed
R-13 Cavity Wall Insulation	0	1
R-19 Roof/ceiling Insulation	-1	0
R-19 Roof/ceiling Insulation + Cool roof membrane or Radiant Barrier3	0	1
R-19 Roof/ceiling Insulation + Attic Venting2	0	1
R-30 Roof/ceiling Insulation	0	1
R-13 Wall Insulation + high reflectance walls4	1	2
R-13 Wall insulation + 90% high efficacy lighting and Energy Star Appliances5	1	2
R-13 Wall Insulation + exterior shading wpf=O 36	1	2
Ductless Air Conditioner	1	1
1.071 X Federal Minimum SEER for Air Conditioner	1	1
1.142 X Federal Minimum SEER for Air Conditioner	2	2
No air conditioning installed	Not Applicable	2
House floor area = 1,000 ft2	1	1
House floor area = 2,500 ft2	-1	-1
Energy Star Fans8	1	1
Install 1 kW or greater of solar electric	1	1
Metal Framed
R-13 +R 3 Wall Insulation	0	1
R-13 cavity Wall insulation + R-0	-1	0
R-13 Wall Insulation + high reflectance walls4	0	1
R-13 wall insulation+ 90% high efficacy lighting and Energy Star Appliances5	1	2
R-13 Wall Insulation + exterior shading wpf=0.3 6	0	1
R-30 Roof/ceiling Insulation	0	1
R-19 Roof/ceiling Insulation	-1	0
R-19 + Cool roof membrane1 or Radiant Barrier 3	0	1
R-19 Roof/ceiling Insulation + Attic Venting 2	0	1
Ductless Air Conditioner 7	1	1
1.071 X Federal Minimum SEER for Air Conditioner	1	1
1.142 X Federal Minimum SEER for Air Conditioner	2	2
No air conditioning installed	Not Applicable	2
House floor areas = 1,000 ft 2	1	1
House floor areas = 2,500 ft2	-1	-1
Energy Star Fans8	1	1
Install 1 kW or greater of solar electric	1	1
Mass Walls
R- 3/4 Wall Insulation	0	1
R-0 Wall Insulation	-1	0
R-0 Wall Insulation + high reflectance walls4	0	1
R-0 Wall Insulation + 90% high efficacy lighting and Energy Star Appliances5	1	2
R-0 Wall Insulation + exterior shading WPF = 0.36	0	1
R-19 Roof/ceiling Insulation	-1	0
R-19 Roof/ceiling Insulation + Cool roof membrane1 or Radiant Barrier3	0	1
R-19 Roof Insulation + Attic Venting	0	1
R-30 Roof Insulation	0	1
Ductless Air Conditioner7	1	1
1.071 X Federal Minimum SEER for Air Conditioner	1	1
1.142 X Federal Minimum SEER for Air Conditioner	2	2
No air conditioning installed	Not Applicable	2
House floor area = 1,000 ft2	1	1
House floor area = 2,500 ft2	-1	-1
Energy Star Fans8	1	1
Install 1 kW or greater of solar electric	1	1

1. 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. One cfm/ft ² attic venting.

3. 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.

4. Walls with covering with a reflectance of = 0.64.

5. Energy Star rated appliances include refrigerators, dishwashers, and clothes washers and must be installed for the Certificate of Occupancy.

6. 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.

7. All air conditioning systems in the house must be ductless to qualify for this credit.

8. Install ceiling fans or whole house fans in all bedrooms and the largest space that is not used as a bedroom.

Haw. Code R. tit. 3, Building Code Council, State Energy Conservation Code, subch. 2, 27

[Eff 12/15/2020]