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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 10, 2025
Profile Activity
Topics: 17 / Replies: 2822
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RE: Totally bewildered with my ECO4 heat pump installation

I can possibly help. First some explanations, then a comment then some more info needed from @jaynieq Explanations: kWh is energy, W is power...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How much radiator capacity do I need for an air source heat pump?

Just for clarity my numbers, collected together, are: Design OAT: -2 Design FT @ -2: 45 Measured house loss @-2: 7kW Rated output of '7kW' Vail...

8 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: ASHP and how it should run and potential kw consumption?

I think you have a Vaillant, in which case (on the sensocomfort) its settings - installer level - noise reduction mode. I run mine in noise reductio...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP and how it should run and potential kw consumption?

Mine followed a similar general pattern, but the defrosts (I assume the dips are defrosts) were more like once per hour. The snow day was both very w...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP on a low income: a cautionary tale

That's really good and simple. Obviously a gross generalisation but inevitably so if its going to be simple! I might well use this when talking to p...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Thinking of ripping our my IVT Greenline HT Plus C model and replacing with a gas boiler.

That's a pity, the most expensive part of a GSHP is, SOFAIK, the underground bit by some margin, which you already have! Unfortunately we live in a ...

8 months ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: How much radiator capacity do I need for an air source heat pump?

10kW is based on the design FT of 45. Most of the upstairs emitters are rather 'oversized' (for FT45) because I upgraded them before I realised quite...

8 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

Thats a fair observation, although some of the 'cheaper' brands (eg Samsung) with very basic controllers seem to have caught up in price certainly wit...

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

No, (if society survives that long which, given out bent for self destruction must be questionable). Its my personal conviction that ToU tariffs wi...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New 5kW Samsung Gen6 heat pump owner with loads of questions

@technogeek The majority of the population probably do have condensing boilers but, sadly, the majority are set up not to condense (flow temperatur...

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

I agree that just because its decades old is not a good reason, but the point is that it is decades old and has been proven to work. Its also not j...

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

Thanks for these, you make some good points (at least in my opinion), here are some comments from me Im not sure they are a waste of time becaus...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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