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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 7, 2025
Profile Activity
Topics: 17 / Replies: 2679
AllTopicsReplies
Topic
Revised version of MCS-020 (noise standards for heat pumps)
4 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Replies: 2
Views: 368
Reply
RE: why solar diverters for HW instead of the heat pump?

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 ...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: why solar diverters for HW instead of the heat pump?

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...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Commencing on an ASHP Installation Process

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 ...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Commencing on an ASHP Installation Process

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...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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)
Reply
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)
Reply
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
Reply
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)
Reply
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)
Reply
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)
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