ᐅ Heating system, something isn’t working correctly here. The hallway is always at 22°C (about 72°F).
Created on: 6 Oct 2022 08:21
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chewbacca123
Good morning everyone, I have a question and hope you can help me. We have been living in our newly built house with underfloor heating for three years now. Our heating system is a heat pump.
Basically, the radiators in our hallway are turned off, yet the temperature in the hallway is constantly around 22°C (72°F). Our bathroom, on the other hand, only reaches about 20.5°C (69°F) at the current supply temperature, so we always have to turn on the towel radiator; otherwise, it’s too cold in the bathroom in the morning, especially with a baby.
I just can’t understand why our hallway is so warm. When someone visits and opens the front door, the first comment is always: “It’s really hot in your hallway.” I agree, but what could be causing this? If energy is being wasted here, that would be a serious issue.
The valves embedded in the walls for the hallway heating are set to a minimum, and the manual controls for each area are also turned down to zero. Still, the hallway is very warm. It’s driving me crazy… Do you have any ideas?
Other rooms where we have the controls turned down to zero are pleasantly cool as expected.
Thanks.
Basically, the radiators in our hallway are turned off, yet the temperature in the hallway is constantly around 22°C (72°F). Our bathroom, on the other hand, only reaches about 20.5°C (69°F) at the current supply temperature, so we always have to turn on the towel radiator; otherwise, it’s too cold in the bathroom in the morning, especially with a baby.
I just can’t understand why our hallway is so warm. When someone visits and opens the front door, the first comment is always: “It’s really hot in your hallway.” I agree, but what could be causing this? If energy is being wasted here, that would be a serious issue.
The valves embedded in the walls for the hallway heating are set to a minimum, and the manual controls for each area are also turned down to zero. Still, the hallway is very warm. It’s driving me crazy… Do you have any ideas?
Other rooms where we have the controls turned down to zero are pleasantly cool as expected.
Thanks.
chewbacca123 schrieb:
I think I may have explained myself unclearly just now. We have a house built into a slope, with a ground floor and a basement level. The hallway on the ground floor has only one frosted glass window facing north, where the front door is located. The hallway downstairs has the terrace door, which faces south. Without a floor plan, I still don’t fully understand. Are the two hallways connected by the stairs? Or are they separated (with doors)?
chewbacca123 schrieb:
The sun always seems to shine strongly on it in the afternoon, that’s true. But can that be responsible for the warmth in the hallway in October? Even at night? Absolutely. As I mentioned before, the sun heats the air and also the floor, and if it lasts long enough, the screed (and walls, furniture, etc.). This stores the heat and radiates it back even at night.
chewbacca123 schrieb:
We do have a ventilation system as well. But the hallway is not connected to it. That’s not a problem; hallways are often designed that way. You then have supply air in the bedrooms and exhaust air in the bathroom. The air flow should ideally go from the bedrooms through the hallway to the bathroom. The prerequisite is that the air can circulate, so you shouldn’t have fully sealed doors.
And yes, I would also do a comparison as @Joedreck suggested. Still, I would want to know the exact temperatures at different spots. Because even if a 1 to 1.5 degree difference is noticeable, from your description it seems like it might be significantly more.
A
allstar836 Oct 2022 14:38chewbacca123 schrieb:
the floor in the hallway should be warm, rightI wouldn't fully agree with that. I would always refer to the room temperature when considering how "warm" it is.Warm, in the sense that you can actually feel it under your feet, is more likely in areas with closer pipe spacing, like the bathroom.
I would check how the valves in the manifold respond or have the plumber come by to go through it together to ensure it matches the design calculations.
chewbacca123 schrieb:
The hallway on the ground floor, our front door faces north. In the basement, the large patio door faces south, so it gets direct sunlight during the day.chewbacca123 schrieb:
The hallway downstairs has the patio door that faces the south side. It does get strong afternoon sun, that’s true. But can that be the reason for the warmth in the hallway in October? Even at night?Heat rises. Maybe it just accumulates in your hallway?
At 22°C (72°F), saying that you feel like you’re walking into a wall (compared to 20-21°C (68-70°F) in other rooms) seems surprising to me. It definitely makes sense to re-measure the current situation with thermometers. (Perception is subjective, but personally, I need a noticeably higher temperature for that feeling.) Otherwise, I don’t have much to add that hasn’t already been said. For example, floors and similar surfaces retain heat well in newer buildings, so shading might be worth considering, especially in southern-facing areas. Checking the heating system further also doesn’t sound like a bad idea.
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