Many heated towel rails will provide an adequate heat output to keep most bathroom spaces comfortably warm.
However, everything is relative to the size of the area – larger bathrooms might require an extra heating source to provide a sufficient BTU output.
As with any room, you can make use of our BTU Calculator to work out which heated towel rail design will be appropriate to heat your bathroom. Or, whether you also require the likes of radiators to provide extra warmth.