ᐅ Underfloor Heating, Room Thermostats, and Cold Tiles

Hello everyone,

I have a question for the heating specialists before I bother my heating technician or electrician with my limited knowledge about thermostats.

I have underfloor heating in the house, controlled by room thermostats, and the heating system is a brine-to-water heat pump. Currently, all thermostats are set to about 20°C (68°F), and the room temperature matches that.

However, the floor, especially in rooms with tiles (bathroom, entrance, fireplace room, etc.), feels very cold. Is it possible that the heating system isn’t providing enough flow—at least not enough to warm the floor properly—when the thermostats indicate the room temperature is fine?

Thanks in advance for your answers.

Best regards,
Stephan.

Why should the heating run when it will soon be warmer outside during the day than inside? We have the same "problem" in our hallway with granite tiles.
You can adjust the heating curve, which makes little sense but keeps your feet warm. Alternatively, switch to slightly thicker socks for a few days.

That, however, contradicts the main purpose of underfloor heating (at least in my opinion), because with Kfw70 insulation, the heating will probably never heat up enough for me to have warm feet in the bathroom... no matter what the outside temperatures are.

It’s good in terms of low heating costs, but cold tiles in the bathroom are simply unacceptable.

A underfloor heating system is designed to warm the room, not just your feet! At the current temperatures, you won’t notice much difference. In winter, the floor won’t be cozy warm, but it will be noticeably warmer. If you want a higher temperature in the bathroom, underfloor heating will be inefficient.

Of course, the primary purpose of the heating system is to warm the room. I just remember from my childhood home that the floor was also kept at a comfortable temperature. I’m not talking about a full 25°C (77°F), but certainly warmer than very cold.
Well, obviously I expected too much.

As mentioned before, you will have warm feet in winter temperatures. However, in the bathroom, you should already feel the underfloor heating by now (at least that’s how it is for us).