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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 21, 2025
Profile Activity
Topics: 17 / Replies: 2698
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

Yes but that doesnt solve the problem that @sunandair is saying can be solved by clever emitter design, namely cycling Im cant see why two compre...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New to world of ASHPs: Ideal Logic Air Monobloc heat pump 8kW questions

OK. To minimise costs and maximise efficiency you are going to need to get your 'weather compensation' curve as low as possible so you are running w...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP + two cylinders - possible?

I cant see any fundamental reason not to have two cylinders and Im not sure that one needs to be a mini store (but it could be). The challenge, as ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

I agree. I agree. Given the range of our climate and the maximum modulation range available from current heat pumps, I concede that we...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

Apologies, I was trying to work out what you were saying and misunderstood. If I increase the radiator capacity then it follows that the flow...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Three pipe buffer

@jancold thanks for the update! Fully understood. Since I'm just some bod on the internet in no way connected to the project Im not bound by the...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

er no need to apologise, you aren't obliged to answer quickly or indeed at all!

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

For the avoidance of doubt I still don't get the first part of this as explained above, and would appreciate clarification if you have the time and in...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New to world of ASHPs: Ideal Logic Air Monobloc heat pump 8kW questions

If they were heated up only at night on a very cheap night-time tarrif, they could possibly work out cheaper than ASHP unless you get the right tarrif...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

This is an interesting one and shows the challenge of mixing radiators and UFH IMHO. I suspect that, in at least some houses, it 'resolves itself' b...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

Ultimately demand is defined by the house because ultimately the heat pump (plus any sundry sources of heating) must supply exactly the amount of ener...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

Its easy to get mixed up! So now leave 2022 where it is and gradually adjust 2021 until the house is at the right temperature. Allow a week, change...

6 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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