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 Demand (Site) | 1 - 12 kBTU/Ft2-YR | |
| Cooling Demand (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) |
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| Air Tightness |
0.05 cfm/gross sqft shell @ 50 pa 0.08 cfm/gross sqft shell @ 75 pa |