Energy Efficient Buildings

The PH standard is simple, precise and climate specific. To be certified as a PHIUS+, a new home or building must meet just six criteria:

Heating Load (Site) 1 - 12 kBTU/Ft2-YR
Cooling Load (Site) 1 - 21.4 kBTU/Ft2-YR
Peak Heat Load 0.5 - 5.4 BTU/FT2-Hr
Peak Cooling Load 1.8 - 8.9 BTU/Ft2-Hr
Total Energy Demand (Source) Beds+1 / 21154 kBTU/Person-YR (Temporary)
Beds+1 / 14330 kBTU/Person-YR (Future)
Air Tightness 0.05 cfm/gross sqft shell @ 50 pa
0.08 cfm/gross sqft shell @ 75 pa