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JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Apr 28, 2025
Topics: 15 / Replies: 2353
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RE: Commencing on an ASHP Installation Process

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...

1 week ago
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RE: Commencing on an ASHP Installation Process

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...

1 week ago
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RE: Commencing on an ASHP Installation Process

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 ...

1 week ago
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RE: Say hello and introduce yourself

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...

1 week ago
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RE: Help me keep the faith with my air source heat pump installation

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...

1 week ago
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RE: Air Source Heat Pump - Side Alley Suitability

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)) ...

1 week ago
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RE: Air Source Heat Pump - Side Alley Suitability

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...

1 week ago
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RE: Air Source Heat Pump - Side Alley Suitability

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 ...

1 week ago
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RE: Air Source Heat Pump - Side Alley Suitability

There are enough red flags in this to be concerning. I am going to keep this short, there is quite a lot to say/ask about what you have told us but I...

1 week ago
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RE: Air Source Heat Pump - Side Alley Suitability

My installer wasn't at all keen on this option, and we had alternative location. That said Heat geek once did an experiment where they virtually surr...

1 week ago
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RE: In the middle of an ASHP installation - a few questions (and issues)

I don't know I checked the data resolution and its hourly. However I think this is in fact an hourly sample (by home assistant - which limits i...

1 week ago
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RE: In the middle of an ASHP installation - a few questions (and issues)

@benson Strange no contract as it protects them more than it protects you IMHO, ie the absence of a contract puts you in a stronger position. Pe...

1 week ago
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