Construction costs are currently skyrocketing

An anecdote on the topic of Passive House:

At the end of last week, we received our wood stove. The stove installer asked if we also have a Passive House, because a week earlier he had installed two stoves in one afterwards. Allegedly, the residents couldn't get the room temperature above +18° on some days :)

An anecdote on the topic of Passive House:

At the end of last week we received our wood stove. The stove builder asked if we also had a Passive House, because a week earlier he had installed two stoves in a retrofit. Allegedly, the occupants couldn’t get the room temperature above +18° on some days :)

Why should that be the case? I have a Passive House and yesterday I had between 21 and 22 degrees. However, I still set the heat pump one degree higher ;-)
Could it possibly be about Passive House owners who thought a Passive House heats itself? :p:eek::oops::rolleyes:o_O

Actually, a passive house is defined in such a way that it does not require a dedicated heating system and remains warm through the recovery of waste heat. Additional heating is at most used on the few coldest days of the year. In this respect, you may have a building envelope to passive house standards, but strictly speaking, not a passive house.

Actually, a passive house is defined in such a way that it does not require a dedicated heating system and stays warm through the recovery of waste heat. Additional heating is applied at most on the few coldest days of the year. In that sense, you might have a building envelope at passive house standard, but strictly speaking, not a passive house.

You are absolutely right, of course. But if no one is there, no "waste heat" can be generated. Wasn't it around 100 watts per person? And hot water is overrated too - isn’t it?

Could it possibly have been about passive house owners who thought a passive house warms itself?

Then we have a part-time passive house, from April to October.

Of course, you are absolutely right. But if no one is there, no "waste heat" can be generated either.
Wasn't it about 100 watts per person? And hot water is overrated too – right?

That is one of the reasons why passive houses, by strict definition, have not become widespread. Solar gains are nice and all, but they can fail for a week at a time. The incandescent bulbs of my youth with their corresponding heating output have been replaced by energy-saving LEDs, and unfortunately, now the 200W of waste heat in the living room is missing. And instead of a housewife and breadwinner, nowadays often both parents work, and the children are at school until the afternoon. The entire energy balance is now different, and the newly added access point no longer compensates for it.