What Is Passive House Certification Requirement?
Passive House (the PHIUS/PHI — the standard) requires the heating/cooling demand (the ≤4.75 kBtu/sf-yr — the climate's), the airtightness (the ≤0.6 ACH50 — the verified), and the source energy (the ≤38 kBtu/sf-yr — the cap). The certification: the modeling (the WUFI Passive — the energy's), the verification (the blower's — the tested; the rater's), and the quality (the assurance — the documented). The ultra-low's — the certified.
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The criteria
The demand (the 4.75 — the heating/cooling's; the peak's — the 3.8), the airtightness (the 0.6 ACH50 — the tested; the 0.06 CFM75), the source (the 38 — the cap; the renewables'), and the comfort (the 68°F — the maintained; the criteria).
The design
The envelope (the superinsulated — the R-40+; the thermal's — the bridge-free), the windows (the triple — the U-0.15; the solar's — the modeled), the ventilation (the ERV — the 90%; the continuous), and the modeling (the WUFI — the energy's; the iterative).
Certification
The rater (the certified — the PHIUS's; the verification), the documentation (the modeled — the submitted; the photos'), the blower (the 0.6 — the proven; the multiple's), and the cost (the 5-10% — the premium; the energy's — the savings). The Passive House is the rigorous — the modeled, the tested, the certified.
The bottom line
Passive House requires ≤4.75 kBtu/sf-yr heating/cooling demand, ≤0.6 ACH50 airtightness, WUFI Passive modeling, and rater verification — design superinsulated thermal-bridge-free envelopes with ERV.
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