Heating in winter

Hello,

hope this is not a stupid question. We (own the ground floor apartment) basically only heat the bathroom & living kitchen (40 sqm) in winter. The rest is more or less cold or set to thermostat 5 degrees (minimum).

We have an air heat pump, underfloor heating.

Stupid question: do we generally have to heat the other rooms higher so that the pipes, for example, do not burst from the cold?

My experience is that it is better to turn the heating up a bit higher and not to "turn it off". This way you always have a large temperature difference between the rooms. But I hardly believe that the underfloor heating is completely off.

Do you have a vapor barrier between the ground floor and the upper floor or is there an open connection? Otherwise, the upper apartment will mold if you are unlucky...

There are no stupid questions. So I always leave the heating on, except when airing. You should also not set the temperature so low that the house or apartment needs more energy to heat. It consumes accordingly more. However, I am not familiar with underfloor heating. Maybe it’s different? Can “Koempy” confirm.

I generally see a risk of mold if certain rooms, which border "warm" ones, are not heated. In modern or well-insulated building envelopes, the unheated rooms are to some extent heated by the adjacent heated rooms, so that ultimately higher heating costs arise here. If an air heat pump is used, I assume that the apartment is well insulated and would heat all rooms without there being too large temperature differences. This should not even be very noticeable in the heating costs.

Good morning,

you can read up here. I think this partly answers your questions.


I have now set all our ERRs to 5 and directly turned down the guest room, bedroom, etc. at the distributor, so that only 18° remain in the rooms.
Less than 15° is not recommended anyway, as only warm air can absorb moisture and thus bring it outside when ventilating. If you open the door at 5°, warm moist air enters the room and then gives off the moisture to walls, furniture, etc. when cooling down.