Last seen: Apr 23, 2025
I should probably add to my comments above that, whilst I can definitely see an argument for using a solar diverter in some cases - most particularly ...
The argument I can think of is that solar diverters precisely match the power draw to the available excess solar power, which heat pumps cannot do. T...
Lots of reading and questioning which the background makes easier. I started when I first thought about getting a heat pump for myself and it became ...
Crudely dividing by somewhere between 2000 and 2900 gives an estimate dependant on assumptions/who you believe. My total gas consumption for a 7kW ho...
11kW does sound way over in that case! As you say it will be interesting to see what others come up with, maybe try to get a copy of the calculations...
Is 116 sqm both floors, or just the footprint? If the former then 11kW sounds possibly a bit high to me. Your conservatory may be dominating however...
Hi I have just posted the below in response to your intro text. ------------- In terms of getting quotes, be prepared to get a fair few to find ...
Welcome to the forum. If you are new to ASHPs I suggest you read the introduction here. @editor also publishes a couple of books guiding you thro...
I agree with @mars. My install was not dissimilar. I got a 7kW Vaillant, 200l cylinder and 4 rads (including one fancoil) for 12.5K les grant. Im...
Thats probably fair enough. The degree-days calculation (on which quite a few heating formula are based) uses the formula sum (max (Tbase-OAT ,0)) ...
Thats a slightly awkward number because, by the time you add an allowance for heating DHW, it will push you towards a 10kW machine rather than 7-8, wh...
All sounds sensible to me and to be clear, the idea of swapping to a ASHP at the same time as fixing the distribution is sound IMHO, if you are going ...
Latest Posts
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RE: Getting the best out of a heat pump - is Homely a possible answer?
Your understanding of having to wire those valves back ...
By GrahamL , 8 hours ago
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RE: why solar diverters for HW instead of the heat pump?
I should probably add to my comments above that, whilst...
By JamesPa , 12 hours ago
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RE: Commencing on an ASHP Installation Process
Lots of reading and questioning which the background ma...
By JamesPa , 16 hours ago
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RE: The Great British Heat Pump Quiz
Not sure how that happened 🤣 I suspect that it ...
By Mars , 18 hours ago
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RE: Help with understanding my Mitsubishi Ecodan air source heat pump
@patch I think @ashp-bobba gave you some great pointers...
By SUNandAIR , 2 days ago
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RE: Installing your own ASHP - DIY
Hi @tomasmcguinness, how are you progressing with this?...
By Ashfp , 2 days ago
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RE: Say hello and introduce yourself
Welcome to the forum. If you are new to ASHPs I sug...
By JamesPa , 2 days ago
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RE: Help me keep the faith with my air source heat pump installation
@editor guess the reason im asking is cause ive looked ...
By AdamK , 2 days ago
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RE: The Rise and Fall of Europe’s Most Generous Green Subsidy
This is where the cold water storage tank was situated;...
By Dwynwen , 3 days ago
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RE: Air Source Heat Pump - Side Alley Suitability
Thats probably fair enough. The degree-days calculatio...
By JamesPa , 3 days ago
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RE: ASHP Ecodan L9 error - No Heating but Hot Water
That’s interesting, but obviously concerning also…. Do ...
By SUNandAIR , 4 days ago
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RE: In the middle of an ASHP installation - a few questions (and issues)
Thank you @robs - that very useful data. The issue wa...
By Transparent , 4 days ago
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RE: Hitachi Yutaki SCombi Heat Pump - Thermal Off's
@trebor12345 The Auto function is supposed to adapt au...
By Heatgeek , 5 days ago
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RE: help sizing rads based on room by room heat loss
If its 1988W at DT 50, which is how most radiators are ...
By JamesPa , 5 days ago
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RE: Career change – entering the world of heating and heat pumps
@editor Mars, thank you. That's along the routes I was ...
By Lakey , 5 days ago
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@editor thanks Mars, it's a rare occasion I'm looking f...
By big_si , 5 days ago
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RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW
@ashp-bobba and @jamespa - thank you both for all your ...
By CBrenewable , 6 days ago
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Win one of five "Heat Pumps 101" Courses
Heat pumps are gaining traction in the UK, but between ...
By Mars , 6 days ago
