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Last seen: Nov 3, 2026
This is part of the Grant's 'frost protection' system (as opposed to the 'defrost cycle' which we're all familiar with in this type of weather!), whic...
Same to you. Thanks for providing this forum for people to learn from and to teach each other. Here's to a higher COP and a lower energy bill in 2024!
@heat_help Hi. You seem to be saying "flow rate" at some points and "flow temperature" at others? As you probably know, the flow rate on a Grant is fi...
@jwilliams89 The house is around 150m2, split 110/40 (it's a converted bungalow, which is why the split is so unbalanced). Hence the K3s are downstair...
@jwilliams89 From my experience, the radiators were sized correctly. I have 5 (I think) large K3s downstairs. One is 84Kg empty, so you need something...
@allyfish This sounds very positive, although I'm a little sceptical at the moment. I hope they can retrofit these better controls, as the current one...
I believe 'holiday mode' achieves the same thing i.e. during the times you mark as holiday, a fixed temp target is set. This tends to be controlled by...
Good that they are discussing EPCs and how they don't favour ASHPs. The whole EPC rating system is a joke at the moment - no training, no standards, ...
@jwilliams89 As someone who's had a Grant installed under ECO4, part of the problem (I suspect) is in the company trying to tick all of the required b...
I'd echo what @allyfish said. I too have a 10kW Grant, and about 150m2 to heat. During the cold snap I was consuming 50-60kWh per day, and this didn't...
@editor I think it's important to focus on "energy used" rather than COP. HP owners tend to focus on COP, which is quite a novel concept for non-HP pe...
I've been bending my brain trying to balance my LLH (Grant install one by default these days it seems - I suspect to ease the installer's job from wha...
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Degrees of Separation
Latest Posts
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If it no longer works after forgetting its settings and...
By bobflux , 1 minute ago
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RE: Should I change my cylinder when changing from a gas boiler to a heat pump.
Our decision process was a bit different as we are air/...
By EtchedPixels , 42 minutes ago
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RE: Heat Geek Zero Disrupt: Are We Sleepwalking Into Another Race to the Bottom?
The Heat Geek survey and design process continues to ge...
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RE: Plug and play solar. Thoughts?
Impressions so far from the one I've installed are that...
By EtchedPixels , 14 hours ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
@editor And as an occasional contributor, may I say wel...
By Toodles , 19 hours ago
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RE: Should Households Who Can Afford It Pay More for Energy to Help Those Who Can't?
They don't have to try. Our entire system is d...
By EtchedPixels , 20 hours ago
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RE: Why don't people choose heat pumps?
Fair enough. I guess I was thinking of pipes that run ...
By JamesPa , 20 hours ago
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RE: How Can I Prove Coal Was My Main Heating Source Without Receipts?
Got excepted for the grant now so thanks for the replie...
By Chilli304 , 24 hours ago
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Daikin Altherma 3 R F+W, room thermostat control, weath...
By JanHarley , 1 day ago
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RE: Buffer tank on a 2 x 14kw Ecodan system
Pretty much as I had guessed in my crude scaling from m...
By JamesPa , 1 day ago
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RE: Help me keep the faith with my air source heat pump installation
Well you have a vibration generator running at some fre...
By bobflux , 2 days ago
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RE: Who's your electricity provider and what's your tariff?
@downfield Thats a decent rate, I’m shocked they hadn...
By Papahuhu , 3 days ago
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RE: Adventures in heat loss calculations
@toodles thanks! So as suspected, around a doubling of ...
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