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.
Bookstar schrieb:
In September this year, I saved 30% compared to last year. The climate curve according to Google is almost identical. I’m curious to see how the savings will look in the colder months and whether this is transferable.Has to be. Your consumption is simply (unnecessarily) too high.
Even if you don’t hit the optimum directly right now and the system may not have been planned perfectly, you can expect a significant effect. September was just the beginning; the heating didn’t have much work to do yet, and most of the operating time was probably still used for domestic hot water.
In the pink forum, there is often a discussion about whether to raise the heating during the day or not. The fact is that everyone tends to shut it off during nighttime lockout periods, both for heating and for hot water. I have the hot water locked off at night, and the buffer tank easily maintains the temperature until the morning hours—of course, only with the circulation pump turned off.
Currently, I am using around 3500 kWh per year for approximately 250 m² (2700 ft²) of heating surface, which results in about 3.4 kWh per m². This is with a Buderus heat pump that does not modulate, which is a bit of a pity. However, it should not be forgotten that this was a very mild winter, and I have only optimized the hot water system since summer.
Currently, I am using around 3500 kWh per year for approximately 250 m² (2700 ft²) of heating surface, which results in about 3.4 kWh per m². This is with a Buderus heat pump that does not modulate, which is a bit of a pity. However, it should not be forgotten that this was a very mild winter, and I have only optimized the hot water system since summer.
Ötzi Ötztaler9 Oct 2020 14:55
tomtom79 schrieb:
The fact is that everyone tends to avoid restrictions during nighttime hours.Is this also the case with modulating heat pumps?Ötzi Ötztaler9 Oct 2020 15:16
My question about nighttime restriction periods referred to heating with underfloor heating. Do restriction periods at night actually make sense in that case?
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