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JamesPa

@jamespa

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Illustrious Member

Joined: Apr 3, 2023
Last seen: Aug 13, 2025

Topics: 17 / Replies: 2685

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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...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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 ...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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...

4 months ago

Forum

Introductions, Forum Rules & Updates

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...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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)) ...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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 ...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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...

4 months ago

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