ᐅ Towel warmers with air-to-water heat pumps

If the house is hardly any cooler than the bathroom anyway, there is no need for electric heating in the bathroom. This depends on individual preferences; for example, we deliberately planned the bathroom to be only 21°C (70°F) but included electric heating. If you want consistently high temperatures in the bathroom, you should plan for a lot of heating surface area. Bathroom heating surfaces are often limited, but this doesn't have to be the case in every house.

Hydraulic balancing sounds good!

We did the same as @ares83. We simply connected the towel radiator to the bathroom’s heating circuit. The towel radiator is only lukewarm in winter, but it’s still a convenient way to dry towels. Our general contractor asked at the time whether we wanted it to run electrically or through underfloor heating. We chose underfloor heating.

In the guest bathroom (including the shower), we installed a socket for an electric towel radiator in case we want to add one later. Currently, the shower there is not used. But once the little one is old enough to shower by themselves, I might end up using the guest bathroom in the mornings.

But if the radiator only ever gets lukewarm, even in winter, then I might as well skip it entirely and save the thousand euros too.

In our case, the towel radiator was included in the price, while an electric cartridge would have caused additional costs.

Usually, the towel radiator replaces the missing surface area under the bathtub and is then included accordingly in the overall scope.

In our case, leaving it out would have resulted in a €100 credit, and you still need somewhere to hang the towels.
It also adds a bit of warmth to the otherwise small bathroom area. The two heating circuits in the bathroom alone don’t provide enough heat, as we noticed when my wife turned one of them off.

We faced this question today as well with the architect of the subcontractor. Opinions vary widely. Therefore, please share your experiences.

Options:

1.) Underfloor heating without a towel radiator

- Is this enough to maintain a 10m² (108 sq ft) bathroom with a shower and bathtub at 21°C (70°F)?
- Will the bathroom be colder than other rooms due to the smaller heating surface?

2.) Underfloor heating with a towel radiator on the same heating circuit as the bathroom

- The heating surface increases somewhat, but the towel radiator will only reach a temperature of about 21°C (70°F)
- Does the advantage of the "larger" heating surface outweigh this?

3.) Underfloor heating with a towel radiator on a separate heating circuit

- Probably the least energy-efficient option

Please share your experiences

4.) Underfloor heating with an electric towel radiator

- Can be switched on if needed