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@heacol
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Noble Member
Joined: Aug 6, 2021
Last seen: Oct 1, 2025
Profile Activity
Topics: 3 / Replies: 411
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Reply
RE: efficiency factor of heat pump brands

@jamespa There are many hundreds of other variables in the vapour compression circuit, miss one and the calculations are irrelivant. Every time I thnk...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: rad size and efficiency

It is just thermodynamics, the higher you move the flow temperature the more it will cost to run, existing radiators may need a higher flow temperatur...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: efficiency factor of heat pump brands

All heat pumps, using the same gas, will have a verry simmalr perfomance, you cammot beat the rules of thermodynamics, the biggest effect on heat pump...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP and heating issues in new build house

Hi @dreg1 11, Kw or 10.6 is neither here nor there, it is considered to supply 100% of the load and will with ease, if your system is controlled prop...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP and heating issues in new build house

@terry1812 Go to "My Dasboard" Top right and click on the messages icon, I have sent you one.

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP and heating issues in new build house

I can help, PM me

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP and heating issues in new build house

@terry1812 Sorry, I did not realise it was there, Admin chainged it a while ago, it has been corrected.

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP and heating issues in new build house

Firstly, lets look at the heat pump, this unit, accrding to the doccumentation Mr Google found fo me, it will supply 11 Kw down to -7, if your heat lo...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Say hello and introduce yourself

@adamk You defernatly do not need a buffer and possibly a volumisor depending on how many radiators you have open loop and the unit you choose. Yes, y...

8 months ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

@jamespa "Whether anyone would be prepared to pay the rates that they would demand is of course another matter!", they are not, we have sorted a lot o...

9 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

@jamespa (Im presumeing when you say pumps in parallel you also include in series - as here); you are correct and I have corrected my post. Mismatched...

9 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

@jamespa Pumps in series are not a problem, the flow rate on the pump is approximately the same and the head is about 70% more (not double). @alfapa...

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