Check if a building meets Passive House heating criteria.
Building Physics
Energy Performance
Heating Demand39.6kWh/m²a
Certification StatusFAIL> 15
Demand Comparison (kWh/m²a)
Transmission Loss9,072 kWh
Ventilation Loss826 kWh
About this calculator
Quick Reference
Limit15 kWh/m²a
Airtightness< 0.6 ACH
Overview
A Passive House is a building standard that is truly energy efficient, comfortable, and affordable at the same time. The core requirement is a heating demand ≤ 15 kWh/(m²a).
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Pro Tips
Focus on insulation and airtightness first.
Orient windows south to maximize winter solar gain.
A heat recovery ventilation system is essential for fresh air without heat loss.
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Fun Facts
"Passive Houses can save up to 90% of space heating energy compared to typical building stock."
"The first pilot project was built in Darmstadt, Germany, in 1990."
"Body heat from residents and solar gains provide a significant portion of the heating needs."
