ᐅ Towel Radiators with Underfloor Heating – Do They Get Warm?
Created on: 21 Sep 2020 20:26
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Baugreenhorn
Hello everyone,
we are currently building our semi-detached house. We decided to install underfloor heating on all floors (except the basement).
The builder is definitely installing a towel radiator in the bathroom, connected to the heating circuit.
Now I’m wondering if it will actually get warm enough. The supply temperature for the underfloor heating is very low, so it seems this towel radiator won’t be suitable as a main heating source. Do you think it will at least be enough to keep towels warm or to dry them quickly?
I have a similar concern about the basement. We prepared standard radiators in both rooms down there. Will I be able to get them warm enough so that the rooms can at least be used occasionally for guests (in case of emergency)?
Thanks a lot! I’m curious to hear your opinions. The builder must have a reason for this setup, right?
we are currently building our semi-detached house. We decided to install underfloor heating on all floors (except the basement).
The builder is definitely installing a towel radiator in the bathroom, connected to the heating circuit.
Now I’m wondering if it will actually get warm enough. The supply temperature for the underfloor heating is very low, so it seems this towel radiator won’t be suitable as a main heating source. Do you think it will at least be enough to keep towels warm or to dry them quickly?
I have a similar concern about the basement. We prepared standard radiators in both rooms down there. Will I be able to get them warm enough so that the rooms can at least be used occasionally for guests (in case of emergency)?
Thanks a lot! I’m curious to hear your opinions. The builder must have a reason for this setup, right?
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Daniel-Sp22 Sep 2020 09:29But as far as I know, the efficiency loss is less significant than with a heat pump.
With a heat pump, you also encounter hydraulic issues that are less critical with a gas heater.
However, if radiators in the basement are not an option, you will need a mixing valve anyway, and a heat pump is then not suitable.
In that case, you can also use water-based towel warmers.
With a heat pump, you also encounter hydraulic issues that are less critical with a gas heater.
However, if radiators in the basement are not an option, you will need a mixing valve anyway, and a heat pump is then not suitable.
In that case, you can also use water-based towel warmers.
Vario123 schrieb:
We are getting a gas heating system with underfloor heating. In the bathroom, there will be a towel radiator connected to the underfloor heating, but it will also have an electric heating element. I've never heard of that before (doesn't necessarily mean anything).
Personally, if that's really the case, I think it would be a disaster.
To clarify again: The basement will not have underfloor heating? Will the basement then not be heated at all, or will there be radiators installed?
What I would definitely avoid is having a radiator on the same circuit as the underfloor heating. Radiators are made of metal. This causes the water in the circuit to become contaminated. That’s not good for an underfloor heating system.
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Alessandro22 Sep 2020 15:00So, the towels dry significantly faster on the heated towel rail than on a regular rail!
I also use gas in combination with underfloor heating, water-based towel warmers, and water-based preheaters and reheaters for the centralized controlled residential ventilation system.
The boiler heats the water to 45 degrees Celsius (113°F) and sends it to a hydraulic separator.
From there, three circuits branch off: one each to the underfloor heating, the towel warmer, and the controlled ventilation system’s heating coils (water coil). For the underfloor heating, I have installed a pre-control that adjusts the supply temperature between 27 and 35 degrees Celsius (81°F and 95°F) depending on the outdoor temperature.
The heating coils for the controlled ventilation system also have pre-controls (preheater and reheater) and are designed so that the preheater can raise incoming air at –25 degrees Celsius (–13°F) to 10 degrees Celsius (50°F) with a maximum airflow of about 500 cubic meters per hour. The reheater then raises the temperature from 10 degrees Celsius (50°F) to 25 degrees Celsius (77°F). (There is a heat recovery unit between these stages, so the reheater is generously sized.)
The towel warmer has no pre-control (which is fine) and receives the full 45 degrees Celsius (113°F).
This is a rough overview.
The boiler heats the water to 45 degrees Celsius (113°F) and sends it to a hydraulic separator.
From there, three circuits branch off: one each to the underfloor heating, the towel warmer, and the controlled ventilation system’s heating coils (water coil). For the underfloor heating, I have installed a pre-control that adjusts the supply temperature between 27 and 35 degrees Celsius (81°F and 95°F) depending on the outdoor temperature.
The heating coils for the controlled ventilation system also have pre-controls (preheater and reheater) and are designed so that the preheater can raise incoming air at –25 degrees Celsius (–13°F) to 10 degrees Celsius (50°F) with a maximum airflow of about 500 cubic meters per hour. The reheater then raises the temperature from 10 degrees Celsius (50°F) to 25 degrees Celsius (77°F). (There is a heat recovery unit between these stages, so the reheater is generously sized.)
The towel warmer has no pre-control (which is fine) and receives the full 45 degrees Celsius (113°F).
This is a rough overview.
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