ᐅ Underfloor heating with an air-to-water heat pump. House gets too warm when the sun is shining.
Created on: 4 Dec 2019 14:18
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chewbacca123
Hello everyone,
I have a general question.
We moved into our new build four months ago. The living area on the ground floor has three large floor-to-ceiling windows facing south. We have underfloor heating and an air-to-water heat pump.
It provides a really comfortable temperature inside the house, but we have a problem – whenever the sun is shining in winter, even if it’s -2°C (28°F) outside, the temperature suddenly rises to 24°C (75°F) in the living room. It gets uncomfortably warm in here, and the underfloor heating can’t be turned down quickly.
Should we assume that the large floor-to-ceiling windows are responsible for the heat gain? A photo of the south-facing side of the house is attached.
What would you do – always lower all the blinds as soon as sunlight is forecast? That seems quite annoying...
We have motorized blinds controlled by Somfy. Would you consider buying a sensor that automatically lowers the blinds at a certain temperature?
Thanks in advance for your replies.
I have a general question.
We moved into our new build four months ago. The living area on the ground floor has three large floor-to-ceiling windows facing south. We have underfloor heating and an air-to-water heat pump.
It provides a really comfortable temperature inside the house, but we have a problem – whenever the sun is shining in winter, even if it’s -2°C (28°F) outside, the temperature suddenly rises to 24°C (75°F) in the living room. It gets uncomfortably warm in here, and the underfloor heating can’t be turned down quickly.
Should we assume that the large floor-to-ceiling windows are responsible for the heat gain? A photo of the south-facing side of the house is attached.
What would you do – always lower all the blinds as soon as sunlight is forecast? That seems quite annoying...
We have motorized blinds controlled by Somfy. Would you consider buying a sensor that automatically lowers the blinds at a certain temperature?
Thanks in advance for your replies.
D
Daniel-Sp16 Dec 2019 18:23Then turn the top to control the flow (be gentle at first to avoid breaking anything, but your tubes look similar to mine, so they should work in a similar way. If it doesn’t turn, please wait for the heating engineer).
chewbacca12316 Dec 2019 18:25Daniel-Sp schrieb:
This is how it looks at my place.
Unfortunately, heating is currently off. Ah, okay, so the red "collar" must be the reference point then.chewbacca12316 Dec 2019 18:28Daniel-Sp schrieb:
Then turn it at the top to regulate the flow (be careful at first so nothing breaks, but your pipes look like mine, so they should work similarly. If it won’t turn, please wait for the heating engineer) Thank you very much, you are really a thousand times better than our heating engineer. He didn’t explain anything to us at all when I look at it like this.
D
Daniel-Sp16 Dec 2019 18:36guckuck2 schrieb:
Hmm, the risk is definitely that the heat pump might stop its heating cycle too quickly due to the return flow being too warm. This could cause it to short cycle. On the other hand, a smaller temperature difference between supply and return flow is certainly desirable. I guess there’s no straightforward right or wrong?! The refrigerant in the heat pump also has an optimal operating range, and the temperature difference between supply and return flow is important for this. Which temperature difference is ideal also depends on the refrigerant, but I’m not familiar with that...
D
Daniel-Sp16 Dec 2019 18:39chewbacca123 schrieb:
The shower is actually not used much, mainly intended for guests, but someone stays overnight maybe 1 to 2 times a year at most.In my experience, the room heats up quickly when showering.D
Daniel-Sp16 Dec 2019 18:47Maybe you could at least try to see if the large bathroom can be opened up further..