Heating, something is wrong here. Hallway always 22°..

Good morning everyone, I have a question, maybe you can help me. We have now been living in our new building with underfloor heating for three years. Our heating system is a heat pump. Basically, our hallway radiators are turned off, yet we consistently have a temperature of 22° in the hallway. Our bathroom, on the other hand, only heats up to about 20.5° with the current flow temperature, and the towel radiator always has to be switched on, otherwise it is too cold in the bathroom in the morning with the baby. It is simply a mystery to me why our hallway is so warm. When someone visits us and the front door opens, the first comment is always: you have quite a heat in the hallway. Yes, I agree, but what could it be? If unnecessary energy is flowing here, that would be fatal. The valves in the wall for the hallways are set to a minimum, manual dials for the individual areas are also set to zero. Nevertheless, the hallway is totally warm? It’s giving me gray hairs… Do you have any ideas? Other rooms, where we have the controllers set to zero, are also nicely cool accordingly. Thank you

Shot from the hip...

Presumably the heating circuit distributor in the hallway? It emits heat. Additionally, all the pipes run from this distributor into the individual rooms. Presumably uninsulated up to that point. In other words, if you have the pipe for the bathroom fully turned on, it already gives off part of the heat in the hallway before it reaches the bathroom.
That would be a classic case.

Just shooting from the hip...

Probably the heating circuit distributor in the hallway? It gives off heat. Additionally, from this all pipes run into the individual rooms. Probably uninsulated up to that point. So if you have the pipe for the bathroom fully turned on, it already gives off some of the heat in the hallway before it reaches the bathroom.
Probably the heating circuit distributor in the hallway? It gives off heat. Additionally, from this all pipes run into the individual rooms. Probably uninsulated up to that point. So if you have the pipe for the bathroom fully turned on, it already gives off some of the heat in the hallway before it reaches the bathroom.
That would be a classic case.

That could of course be part of the explanation, but then the floor in the hallway would have to be warm, right? I don't really perceive it that way now. Sure, we have distributors in the wall there, but they can't produce such heat, can they?

Well, heat is relative. You are talking about 22 degrees compared to 20.5 in the bathroom. And yet, together with other conditions, that can indeed be the case. The bathroom probably has many exterior walls relative to the room volume and little occupied floor space. The hallway leading into the interior of the building has many interior walls/few exterior walls. Then there is the mentioned effect of the heating circuit distributor, which is like a radiator. Just put a small thermometer in it. And also the pipes for the other rooms. Logically, the pipes have the highest temperature in the first meter.

Edit: You can't really do much about the problem of the pipes through the hallway, but to suggest a solution, maybe you can try insulating the heating circuit distributor. However, I can't tell you how much that will help.

Good morning everyone, I have a question, maybe you can help me. We have been living in our new build with underfloor heating for three years now. Our heating system is a heat pump.

Basically, the heaters in our hallway are turned off, yet we always have a constant temperature of 22° in the hallway. Our bathroom, on the other hand, only gets about 20.5° warm at the current flow temperature, the towel radiator always has to be switched on, otherwise it’s too cold in the bathroom in the morning with the baby.

It’s simply a mystery to me why our hallway is so warm. When someone visits and the front door opens, the first comment is always: you have a heat in the hallway. Yes, I agree, but what could it be? If unnecessary energy is flowing here, that would be fatal. The valves in the wall for the hallways are set to a minimum, manual knobs for the individual areas are also set to zero. Still, the hallway is totally warm? It’s giving me gray hairs… Do you have any idea?

Other rooms where we have the regulators set to zero are also nicely cool accordingly.

Thanks

Maybe the regulation has been switched. So that the bathroom regulates the circuit in the hallway and vice versa. Just try turning up the hallway regulator and observe.

Hallway, except for the front door, presumably completely interior. What do the relevant flows at the HKV look like? And what exactly are the temperatures? Entering the hallway with a jacket is different from [Bad in U-Hose].