ᐅ The temperature inside the rooms does not meet our requirements.

We have underfloor heating where a hydraulic balancing has been carried out. However, we do not want the same temperature in every room, and the actual temperatures in the individual rooms do not meet our needs. What options do we have? It is said that room thermostats or actuators should ideally not be used to adjust the temperature but be left fully open. Can I simply change the flow rates on the manifold until we are satisfied with the temperature?

How is it possible to set an individual room temperature when all thermostats are turned up fully and only the supply temperature is being adjusted?

xMisterDx schrieb:

How can an individual room temperature be adjusted if all thermostats are turned up fully and regulation is only done via the supply temperature?

Individual control in new builds is relative anyway. But basically, it works through the hydraulic balancing (the amount of warm water determines the temperature) and the outdoor temperature-controlled supply temperature. That’s how all well-designed and properly installed heat pumps operate.

Jimy3435 schrieb:

We have underfloor heating where hydraulic balancing was carried out.

I would first talk to the person who calculated and set up the hydraulic balancing for you. Did you also specify the desired temperatures during the calculation/design process?

And now, more specifically regarding the issue: What are the ACTUAL and TARGET temperatures in which rooms?

Jimy3435 schrieb:

It is said that you should avoid using the room thermostats/actuators and keep them fully open as much as possible.

I have been reading that for 10 years now.
We manage these devices well, setting them individually for the bathroom (standard), bedroom (cooler), and living area (warmer), and it works fine that way.
About two to three times a year, our needs change (difference of 0°C (32°F) / 8°C (46°F) / -8°C (18°F)), then we adjust based on experience and that’s all.

nordanney schrieb:
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I would first talk to the person who performed the hydraulic balancing for you and did the calculations and adjustments. Did you provide the desired temperatures during the calculation/design phase?

And now, more specifically regarding the problem: what are the actual and target temperatures for each room?

The balancing was done during construction. We only recently took over the house from the previous owner. Unfortunately, there seems to be no documentation for the heating system, or it has been lost. Therefore, pipe spacing and lengths are unknown.

Regarding the temperatures: both bathrooms are between 22-23°C (72-73°F). Since we only really use one bathroom, 19-20°C (66-68°F) in the second would be sufficient. The bedroom (18°C (64°F)) and utility room just under 19°C (66°F) feel too cold for us personally, and we would prefer around 20°C (68°F).

Jimy3435 schrieb:

Regarding the temperatures: Both bathrooms are between 22-23 degrees Celsius (72-73°F). Since we actually use only one, 19-20 degrees Celsius (66-68°F) in the second would be sufficient. The bedroom (18 degrees Celsius (64°F)) and utility room just under 19 degrees Celsius (66°F) feel too cold for us personally, and we would prefer 20 degrees Celsius (68°F).

And what about all the other rooms? If you increase the flow slightly in the bedroom, it might cause the living room or other areas to become a bit cooler. I would experiment gently with the flow rates. These are not unusual requests or deviations in your case.

At first glance, it sounds like a very well-adjusted heating system—just as most people (except in your case) would want it. Nice and warm in the bathroom, and not too warm in the utility room (why would it need to be warmer there? Is there a sofa or do you spend a lot of time there?) or in the bedroom. These are actually the preferences commonly expressed here in the forum. Definitely not too warm in the bedroom!