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jords
@jords
Member
Active Member
Joined: Sep 23, 2025
Last seen: Oct 27, 2025
Profile Activity
Topics: 1 / Replies: 9
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RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus

@chas-b no unfortunately not. The most detail I received was just the loss per room.

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus

@editor I can understand why. But it’s a shame they don’t give you the details that go into the outcomes. One would assume the formulas they are using...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus

@temperature_gradient I didn’t ask that. I assumed they were using the correct nomenclature. The surveyor told me and then I asked for clarification f...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus

@egp01 interesting. I hadn’t heard of adia. Looks a bit like our current Tado system but for heat pumps. To be honest I thought TRVs like this were a ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus

@drei this is the formula i was using to rate the radiator output correct to the desired flow temp. =ROUND((((((Flow Temp + (Flow Temp - 5)) / 2) - ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus

@drei good to know thanks. I think there should be more than enough volume in the system. I plan for open loop other than TRVs in the bedrooms in case...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus

@editor so my plan is to go away and upgrade all the radiators myself using the highest heat loss estimate for each room. There is about 5m of main “v...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus

@editor Heat Geek - 8.45kW, Octopus - 10.27kW, British Gas - 7.69kW I’ll be honest I think BG have made a mistake somewhere as they wanted the most ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus

@jamespa that’s an interesting way to look at it. Given my gas usage the heat loss would be around 4-5kW. But we tend to run our house on the cooler s...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus
6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 55
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