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Old 12.10.2021, 15:28
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Re: Underfloor heating - strange problem

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but has anybody heard of any law restricting the temperature to 19-20 ?!
No, but a temperature of 20'C is often set for the underfloor heating water temperature as this, coupled with wasted heat from cooking appliances, electrical appliances, warmth from the sun, bodies (live ones), incandescent lamp bulbs etc etc etc will mean that the actual room temperature will be more like 23 - 24'C.

I think your building administrator is misunderstanding this fairly simple concept.

This 20'C figure is probably well out of date as LED lamps, modern electronics, induction hobs etc will mean that the radiating heat from these appliances and lighting will no longer be effective in providing the extra heat so the UFH water temperature will need to be increased to take this into account.

It's room temperature that is important, not UFH water temperature.
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