According to the US DOE “Zero Energy Ready Homes are at least 40%-50% more energy efficient than a typical new home. This generally corresponds to a Home Energy Rating System (HERS) Index Score in the low- to mid-50s, depending on the size of the home and region in which it is built.”
Interpretation 10398 states that projects that receive ENERGY STAR for Homes v3 certification may automatically earn a HERS 70. Can projects that earn the DOE Zero Energy Ready Home label also receive a HERS equivalency?
1
2
3
4
5
6
7
8 or more
Floor Area (square feet)
1,000
1,600
2,200
2,800
3,400
4,000
4,600
+ 600 ft2 per additional bedroom
Floor Area (square meters)
93
148
204
260
315
371
426
+ 55.6 square m2per additional bedroom