lazybloke
Priest of the cult of Chris Rea
- Location
- Leafy Surrey
I've just turned off the 3 of my 4 radiators I had on for 3 hours last night. It's been fairly mild outside tonight and I have noticed since buying a dehumidifier 2 weeks ago that I don't have my heating on as long as before, after reading that drier air takes less to heat than humid air.
Oh, had never thought of that.
On the face of it, yes, water takes thousands of times more energy to heat than air, so there might be a measurable cost difference between heating dry and humid air... but heating isn't just about the air itself but all the surfaces, possessions, furnishings, carpets and the fabric of the building too; so I shouldn't think a bit of humidity makes little cost difference overall.
Controlling humidity is much more important if you're suffering from condensation & mould, at which point comfort may also be impacted.