More precisely, a concrete ceiling is simply a good heat buffer. Once it is heated up, it doesn't help much against heat – on the contrary, it then releases some.
Exactly for this reason, it is worth investing the relatively manageable extra cost for a bivalent heat pump in a heat pump underfloor heating system, and then you can quite comfortably cool down. With a [Photovoltaik] system, you can also use the summer surplus well.
More precisely, a concrete ceiling is simply a good heat buffer. Once it is heated up, it doesn't help much against heat - on the contrary, it then gives off some.
Although that can actually be helpful. Provided that the heat can be removed from the house again in the evening. We currently still have quite cool nights and here on the hill always a bit of wind, so we just leave the windows tilted and get the heat out well. No comparison to the previous apartment, where due to the calm on Lake Constance there was no airflow at all and the dense development hardly cooled the surroundings. At the moment, I am quite optimistic that with some shading we can save ourselves from needing cooling.
That's exactly why it's worth investing the fairly manageable additional cost for a bivalent heat pump in a heat pump underfloor heating system, and then you can cool down quite comfortably. With photovoltaics, you can also use the summer surplus well.
Basically correct, but it actually has nothing to do with a "bivalent" heat pump. Technically, all heat pumps should be capable of cooling because they also need to be able to defrost. Unfortunately, not all manufacturers implement this or they charge extra for licenses. More problematic is the control system.
More precisely, a concrete ceiling is simply a good heat buffer. Once it is heated up, it doesn't help much against heat – on the contrary, it even releases some.
With insulation on the ceiling (which we have), it's somewhat better against heat than without, or with a wooden beam ceiling – but yes, you're right... it doesn't help much.
For the very exact readers: Heat pump with bivalent control. Well, when ordering, you should make sure that not only the control is capable of cooling but also the corresponding room thermostats are included as well as the humidity sensor.
