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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 24, 2025
Profile Activity
Topics: 17 / Replies: 2699
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RE: Heat Pump Manufacturers Recommending Buffer Tanks

... but a volumiser would prolong run times by the same amount without any of the downside risk in performance, difficulties with fault diagnosis and ...

4 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Planning Update: 1 Metre Boundary Rule for Heat Pumps Has Been Scrapped

This is indeed welcome news. In addition the new legislation: Increases the maximum volume under pd to 1.5cu m other than for flats where it remai...

4 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: Is Your 6kW Air Source Heat Pump Really a 6kW?

That's my point really, it should be both freely and readily available. As you say it's just a table (or set of graphs) of cop and output vs ft and o...

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

Good luck, I hope it all works out!

4 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Is Your 6kW Air Source Heat Pump Really a 6kW?

In fairness to heat pump manufacturers the output inevitably (unless artificially restricted in software) varies with oat and FT. Furthermore the vari...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Yes, the "zoning with ASHP" topic again...

Thanks for the detailed reply and I apologise if I can sometimes be pedantic and determined to 'get to the bottom' of product claims. My aim is simply...

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

Really delighted to hear that. I can't comment on homely but if you don't have it then you will likely want to readjust your weather compensation cur...

4 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Plate heat exchanger considerations

Work on 2-3 percent per degree. This is a reasonable estimate of the reduction in COP because you will need to run the heat pump at a higher tempera...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Advice for ground source heat pump in new build with PV and batteries

The useful bit is the bit that specifies the heat loss at the design temp ( presumably around -3). It's your choice of course but I genuinely fear t...

4 months ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: Yes, the "zoning with ASHP" topic again...

@harryrea In a heat pump only system you are never heating space and DHW simultaneously because they require different flow temperatures. For the sam...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Yes, the "zoning with ASHP" topic again...

Ok so I think you consider it (structural zoning, not hybrids) mainstream. Fair enough. Let's consider a couple of fairly mainstream examples. a) ...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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