Talk Morgan Forums Community The Malvern Arms Off grid and power walls etc

I’m pretty convinced that underfloor heating is the right partner for ASHPs, however I’m never going to rip up 150sqm of limestone flags and a fancy kitchen to put it in.

With a house you still need radiators upstairs of course.

A friend in the village lives in a large 200+ year old farmhouse and installed an ASHP to replace an oil fired boiler. Very pleased with it apparently offering good reduction in radiator heating costs, and that was before the energy crisis..

I'll stick with gas, everyone I know with ASHP says it can't cope with sub zero temps and it's cheaper to have electric heating when the temp is that low. What about ground source heating does anyone have experience, cost etc. I went to a health spa in Switzerland that had it heating 3 Olympic swimming pools it was amazing.

Jupiter https://www.jupiterunderfloorheating.com/our-systems, and probably others, have no-screed products that fit between joists and directly under floor boards. No screed over solid floors too.

Ground source heat pumps are expensive…..

https://www.greenmatch.co.uk/blog/2014/04/how-much-does-a-ground-source-heat-pump-cost

Can't comment on lower Keith but admittedly surprised ours comfortably coped with morning temperatures of -8°C over last two winters. It's drawing just over 2.5 kW then but heating six rooms plus hot water. Admittedly the lounge morning temp dropped briefly to 18°C though

Certainly expensive, I wonder if there are any Govt incentives.

“Heat pumps are extremely popular in cold countries.

In fact, the top four European nations with the most heat pumps per person – Norway, Sweden, Finland, and Estonia, respectively – are some of the chilliest places on Earth.

In Norway, where the average winter temperature is -6.8°C, an incredible one in four people own heat pumps.

And the European countries moving the quickest to adopt heat pumps are Lithuania and Poland – which are also among the coldest, with temperatures often falling below freezing.”

https://www.theecoexperts.co.uk/heat-pumps/do-air-source-heat-pumps-work-in-cold-weather

How old is your system Richard, perhaps they are improving. My SIL has one of the first and it struggles in her bungalow.

I have been tracking this thread for some time. Does anyone know what the correlation between air sourced heat pumps and age of building? I saw the comment about use in cold countries but are they typically being used with highly insulated buildings?

I know that sounds obvious but we live in a Victorian farmhouse so even with all the obvious improvements and upgrades we are likely to continue as a heat sink!