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Last seen: Apr 4, 2026
@bami it may be to do with the position of the temperature sensor in the tank. If it’s half way down the top of the tank will be hotter than the set t...
@sandman1600 Thinking about it, my head was in radiator mode. Using under floor heating you can probably knock 5C off both of my suggested flow temper...
@sandman1600 That’s correct. The weather compensation takes over control of the flow temperature according to that little graph that is shown. It’s...
@sandman1600 so what that is showing is that at -3C outside your flow temperature is 55C and at 25C outside your flow temperature is 25C. Between t...
@editor It really just is a case of greed and easy money I fear, Mars
@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.
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