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batalto
@batalto
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Joined: Apr 9, 2021
Last seen: Jul 4, 2025
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Topics: 24 / Replies: 1067
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RE: Measuring your COP

In short, Radiators - although the upstairs ones basically never come on as it never gets cold up there Buffer tank 20l and 210l unvented cylinde...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Measuring your COP

@heacol the house is pretty well insulated. Our losses are around 30w/m2 with an EPC score of 93. So no idea which mode is best. I don't think we have...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Measuring your COP

@heacol the weather compensation is directly on the heat pump which is connected to the Nest so it preadjusts the water temperature before the thermos...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Measuring your COP

@heacol the table had a min, mean and max COP. I took the mean as my number. It will be interesting to see the outcome, especially as the system has w...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Two interesting hydrogen graphics

@derek-m yes that's true, but there is a pretty big difference between wholesale costs to generators and retail costs to residential heating - my poin...

4 years ago
Forum
Well & Truly Off The Grid
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RE: Measuring your COP

I got these figures from Midea for the 12kw unit Water Temp COP 30 35 40 45 50 55 Outdoor air temp -25 2.29 ...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Two interesting hydrogen graphics

@derek-m if gas remains the cheapest method of heating, no one will switch. That's just straight fact. Gas heating has to be made more expensive in co...

4 years ago
Forum
Well & Truly Off The Grid
Reply
RE: Two interesting hydrogen graphics

@derek-m the only way to out gas will be to make it expensive. Move the industry costs for carbon off electricity and onto gas. From my understanding ...

4 years ago
Forum
Well & Truly Off The Grid
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RE: Who's your electricity provider and what's your tariff?

@derek-m little more complex than that. Most batteries have a "peak charge" power - mine is 3.2kw, tesla is a little higher at 5kw. This essentially c...

4 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
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RE: Thinking about an air source heat pump in Aberdeenshire

@stevebrockie3 do the insulation first then you'll need a smaller ASHP. Our house is 260m2 and we only have a 12kw unit. Plus it'll allow you to use l...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Who's your electricity provider and what's your tariff?

@info how would you store that heat in a battery? You would need a buffer tank of some kind. I know it's possible, but it would need a tank and heat e...

4 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Thinking about an air source heat pump in Aberdeenshire

@pumpo-sorcerer I think you might have 250mm of loft insulation? 2.5m is very very well insulated!!

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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