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I looked up "heat pump" on wikipedia, and found this:
My ignorance on such topics is, well, now stated, but living where it can get cold for more than a couple of months every year, and where we heat a flat with radiators, which have their water heated by gas, which has gone up in price by 25% in a year, I like the concept of underfloor electric heating.
A search on google for "electric underfloor heating" brought up a load of businesses (so my non-investment investment has already been made by others.) I clicked on a link, found a Q & A, and read this, relating to bathroom underfloor heating:
Isn't it expensive to run ?
Answers
The devimat® tile warming system only uses as much electricity as a standard light bulb per m². The on-off cycling effect of the floor temperature-sensing thermostat can reduce this by as much as 50%.
It seems a huge market (and as gas prices rise, an ever-cheaper heating resource) for people who live in flats, though maybe not an idea for people who live in detached properties.
I don't see the "rip off" aspect. Don't fight forces, use them R. Buckminster Fuller.
Electric underfloor heating mat = approx. £1,400, or approx 2000 euros.
(I quickly check the zeros...yes, they are correct.)
The flat (not mine, one I saw) is between, say 60 - 90 square metres (lots of rooms in funny places, and I'm no good at guessing room sizes), and had no heating system installed (apart from two hundred year old fire places.) Don't fight forces, use them R. Buckminster Fuller.
I have just contracted a company for drilling a 650 feet deep well for a 9kW heat pump. The drilling cost is about 5500 or $7200. The heat pump costs about 7500 ($9600). Add installation and the total is about 15000. I already have radiant floor heating and radiators since I've been burning oil until now.
They don't usually drill multiple wells here unless you need more than ~700 feet depth which means 11kW pump and up.
Year average COP should be about 3.5, time to earn back is about 10 years with todays oil price, much less if it hits $100 :)
I've never heard someone reporting a year average COP of more than 4. Still, when already at 3.5 or so, higher COPs mater less and less. The difference in savings from 2 to 3 is huge, from 4 to 5 is miniscule in comparisation.
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