Last seen: Dec 13, 2025
@johnr The really annoying thing about the high service costs is that servicing a heat pump is a lot less hassle than a gas boiler. All that is requir...
Ive done some rough calculations on those figures after trying to add in the wood and Ive come up with a demand of about 19.5kW at -3C to achieve 21C ...
@sandman1600 Yes, you have the idea of what you need to achieve. Ive no doubt you will see much reduced energy usage very soon. 🙂
@dowallydrifter if you had oil usage figures and didn’t use the wood burners much you could use that as well to get a sanity check.
@dowallydrifter I think I would be tempted to do my own heat loss assessment. Using heatpunk/p> or you could try this simple one/p> There is a s...
@sandman1600 Hi. Without knowing more about your system for a quick and dirty fix I would lower your flow temperature to 35C and leave the heating ...
@jamespa @bami Just to clarify, I have already done what James has suggested. My water law settings are as low as I can use.
@broadsman I run mine on water law but with regards thermostat as a limiter on my warmest room so the controller does display HEAT.
@eliuccio some people fan assisted radiators to good effect to get extra output. They are expensive but there are diy options which aren’t.
@bami I think a lot of people use heatpunk as a heat loss calculator. To me 6kW would sound about right but this is an area where installers regularly...
@bami yes. 8kw = 8000w I would change the areas in the heat loss calc to the correct ones and recalculate the heat loss. It doesn’t mean that it ...
@bami I think if the heat loss documentation matches a 8kW heat pump then you have a very good case as "not fit for purpose" Alternatively if that i...
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