PassiveHouse: Difference between revisions

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* total primary energy demand <= 60 kWh/m&sup2;/yr.
* total primary energy demand <= 60 kWh/m&sup2;/yr.


For our house, at 244m&sup2; this works out at:
For our house, at 244m&sup2;, this works out at:
* Heating <= 3,660 kWh/m&sup2; over the year.
* Heating <= 3,660 kWh over the year.
* Total primary energy need <= 14,640 kWh/m&sup2; over the year.
* Total primary energy need <= 14,640 kWh over the year.
 
This year is a little weird, because we had the windows replaced while it was 2.5&deg;C.  But our heating is currently 3,270 kWh
and total energy use is 8,100 kWh.
 
So, getting there.

Latest revision as of 17:26, 22 November 2025

The standard says,

  • Space heating <= 15 kWh/m²/yr,
  • an airtightness limit of 0.6ACH@50Pa (air changes per hour at 50 Pascals),
  • total primary energy demand <= 60 kWh/m²/yr.

For our house, at 244m², this works out at:

  • Heating <= 3,660 kWh over the year.
  • Total primary energy need <= 14,640 kWh over the year.