Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Last seen: Aug 4, 2026
Hi 12 kW isnt particularly large for a heat pump in a large property. Can I ask why you are thinking of heating water to 80 C ? I did try boosti...
@crawfora I think it might be to do with preventing freezing. The water is warmer in the house so turning the pump on would mix it with the cooler wat...
@newhouse87 just the unit being close to the manifold and cylinder. I mistakenly put my heat pump out of the way and had a long cold run.
Hi. This is correct operation. Mine does the same.
Keep the pipe run from the heat pump to the cylinder/UFH manifold as short as possible and don’t use mixing valve on the manifold. Obvious now but not...
@andyj Hi Andy. I’m assuming AI mode in LG is the same as weather compensation. If so your understanding of it is correct. If you are able to access...
@sentinam In terms of efficiency yes (you would get a lot better than 1.5 I would hope) but the problem is with the ratio of costs of Gas (or oil) to ...
Hi. Your are correct. But it would be extremely expensive to run. Much better to invest in insulation first.
@adam_colwell I dont have experience with Melcloud but if you can run to putting a heat meter in your circuit it will give you accurate figures. Im pr...
@adam_colwell So you are running your heating for twice as long as me with a similar energy usage? It doesnt feel to me like your reporting system is ...
@adam_colwell I have a 5kW Samsung, but used to have the same Mitsubishi ASHP as you and I was doing quite a bit better in terms of COP. 9kW for hea...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Indevolt Batteries UK Support & Info Thread
You'll have to excuse me, this is all new to me and I s...
By BlizzardGreen , 8 hours ago
-
RE: PV and battery long payback - sense check query
@old_scientist I have now drafted 2 replies - both have...
By DavidB , 12 hours ago
-
Grant Aerona Air to Water R290 6.5 kW - Quiet Mark and Silent Running
Helping a family member with brand new installation of ...
By Chris66 , 17 hours ago
-
RE: Can I start an argument about buffer tanks please? 🙂
Assume flow from the heat source is higher than flow to...
By bobflux , 21 hours ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: adrian Manufacturer: Appliandirect.co....
By Adrian , 1 day ago
-
RE: Acond heat pump failed after four years - diagnostic quote £940 plus VAT
@downfield Thank you Downfield. This sounds potenti...
By Mia , 2 days ago
-
RE: Digest of UK Energy Statistics
@jeff Yes my brother in Oz told me of that charge year...
By Jancold , 2 days ago
-
RE: Love veg, hate watering cans
My dear daughter came for a bath and was given clear (I...
By Jancold , 2 days ago
-
RE: Questions about A2A for heating as well as cooling
@ashp-bobba ah that's good to know, I'll get in contact...
By donciccio , 2 days ago
-
RE: Aircon - in listed buildings
@etchedpixels thanks for giving such a full and helpful...
By GrahamF , 3 days ago
-
RE: Who's your electricity provider and what's your tariff?
@old_scientist The service engineer powered down the ex...
By Papahuhu , 3 days ago
-
RE: Issue with Samsung Cascade System
@jamespa It's a funny system, but was out only option l...
By Renewables345 , 3 days ago
-
RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Thanks, I like the chart, very helpful and this will de...
By baroquebank , 4 days ago
SPONSORS
