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
C
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.
Ötzi Ötztaler18 Oct 2020 18:32
Solid house with construction moisture in the first winter? This could explain it. Or a poorly adjusted heat pump.
Ötzi Ötztaler schrieb:
Solid house with construction moisture during the first winter? That might explain it. Or a poorly adjusted heat pump.Yes.Let's see. For now, I will exclude the electric car from the equation this year, as I will try to charge it 90% at work.
chewbacca1238 Jan 2021 14:28Hello everyone,
for several weeks now, we have had temperatures around 0°C (32°F). My question to you is: how often does your heat pump turn on?
Currently, with nighttime temperatures down to about -3°C (27°F) and daytime highs of up to +2°C (36°F), our heat pump turns on 37 times within 48 hours. Of those, 30 times for heating and seven times for hot water.
How does it look for you? I’m very interested to find out. Thank you.
Best regards
for several weeks now, we have had temperatures around 0°C (32°F). My question to you is: how often does your heat pump turn on?
Currently, with nighttime temperatures down to about -3°C (27°F) and daytime highs of up to +2°C (36°F), our heat pump turns on 37 times within 48 hours. Of those, 30 times for heating and seven times for hot water.
How does it look for you? I’m very interested to find out. Thank you.
Best regards
A
Alessandro8 Jan 2021 14:35What? 😱
That’s intense!
Sorry for being so blunt, but the heating cycles are definitely not normal.
The issue with the domestic hot water shocks me even more...
That’s intense!
Sorry for being so blunt, but the heating cycles are definitely not normal.
The issue with the domestic hot water shocks me even more...
Yes, there is probably something missing in the control settings. Mine runs continuously (modulating) and only pauses about every 3 hours for defrosting and twice a day for domestic hot water (I have allowed two time slots, the rest is locked).
But it also depends on what kind of system you have. Fixed-speed, modulating; compact unit, buffer tank, combined buffer, and so on.
But it also depends on what kind of system you have. Fixed-speed, modulating; compact unit, buffer tank, combined buffer, and so on.
chewbacca123 schrieb:
Hello everyone,
we have had temperatures around 0°C (32°F) for several weeks now. My question to you is, how often does your heat pump kick in?
Currently, with night temperatures around -3°C (27°F) and daytime highs up to +2°C (36°F), our heat pump turns on 37 times within 48 hours. Of these, 30 times for heating and seven times for hot water.
I’m very curious about your experiences. Thank you very much.
Best regards We currently have three cycles per day. Our system modulates but is a bit too powerful for the house.
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