Hello everyone,
We have been living in our new home with a central ventilation system for just over a year now and are very satisfied so far.
The only issue is the temperature in the attic bedroom (north-east side) in the evening, which is not very comfortable. The room is not even facing south, yet the temperature reaches about 23°C (73°F) in the evening, even though we open the windows wide in the morning to ventilate with cool air and then close the curtains completely.
I suspect that the ventilation system continuously blows warm air from outside (logically) into the bedroom, causing the warm air to accumulate there.
How do you handle this? Is there anything specific to consider?
My ventilation system has been running at level 2 for several months now because I felt the air in the room was fresher, especially during winter. Maybe I could lower it again during summer?
Is there anything else that can be adjusted to improve the situation? Or is the only option to open everything wide for half an hour before going to bed to ventilate again?
I appreciate any advice, tips, or tricks.
We have been living in our new home with a central ventilation system for just over a year now and are very satisfied so far.
The only issue is the temperature in the attic bedroom (north-east side) in the evening, which is not very comfortable. The room is not even facing south, yet the temperature reaches about 23°C (73°F) in the evening, even though we open the windows wide in the morning to ventilate with cool air and then close the curtains completely.
I suspect that the ventilation system continuously blows warm air from outside (logically) into the bedroom, causing the warm air to accumulate there.
How do you handle this? Is there anything specific to consider?
My ventilation system has been running at level 2 for several months now because I felt the air in the room was fresher, especially during winter. Maybe I could lower it again during summer?
Is there anything else that can be adjusted to improve the situation? Or is the only option to open everything wide for half an hour before going to bed to ventilate again?
I appreciate any advice, tips, or tricks.
H
HeimatBauer15 Jun 2023 09:26This is exactly why it is worthwhile to invest the relatively moderate extra cost in a dual-source heat pump for a heat pump underfloor heating system, allowing for convenient cooling. When combined with a photovoltaic system, you can also effectively use the summer surplus energy.
W
WilderSueden15 Jun 2023 09:32Tolentino schrieb:
More precisely, a concrete ceiling basically acts as a good thermal buffer. Once it heats up, it doesn’t really help much against heat—in fact, it will even release some of that heat. However, this can actually be helpful, provided that the heat can be released from the house again in the evening. Currently, we still have quite cool nights, and up here on the hill there’s always a bit of wind, so we just keep the windows slightly open and manage to get the heat out efficiently. It’s a completely different situation compared to our previous apartment, where during the calm weather at Lake Constance there was no airflow at all, and the dense building surroundings hardly cooled down. I’m currently quite optimistic that with some shading, we can avoid the need for active cooling.
R
RotorMotor15 Jun 2023 09:35HeimatBauer schrieb:
That’s exactly why it’s worth investing the relatively moderate additional cost for a bivalent heat pump with underfloor heating, as you can conveniently cool down. With photovoltaic systems, you can also effectively use the surplus generated in summer. Basically correct, but it’s not really about a “bivalent” heat pump.
Technically, all heat pumps should be able to provide cooling since they also need to defrost. Unfortunately, not all manufacturers implement this feature, or they charge extra licensing fees.
The bigger challenge is usually the control system.
Tolentino schrieb:
More precisely, a concrete slab is basically just a good heat buffer. Once it is warmed up, it doesn’t help much against heat—in fact, it can even release heat.With insulation on the slab (which we have), it is somewhat better at reducing heat compared to no insulation or a timber beam ceiling—but yes, you’re right... it doesn’t make a huge difference.
H
HeimatBauer15 Jun 2023 09:51For those who pay close attention: heat pump with bivalent control. It’s important to make sure when ordering that not only the control unit has cooling capability but also the corresponding room thermostats and the humidity sensor are included.
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