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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Nov 30, 2025
Profile Activity
Topics: 23 / Replies: 490
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RE: Raising product standards for space heating

A big 'hmmm' from me. 😉 The elephant in the sitting room is not the efficiency and rated performance of heat pumps when tested to BS EN 14511 or BS...

12 months ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: Has anyone replaced an old ASHP with a new one?

Just be mindful of installation restrictions on newer A3 class R290 refrigerant (Propane) ASHP monobloc units. There are rules to follow concerning lo...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Difficult positioning of air source heat pump

Good update 🙂 Cosy 6 aka 'The Maddy D's Bin' has a inclined fan outlet, but the fan outlet is not a freezing risk anyway, that risk is only from cond...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Does turning down radiators preserve the heat in the water?

South facing rooms with large windows can experience high solar gain. Is this the case? Solar gain is one factor that external weather compensated con...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Difficult positioning of air source heat pump

Hi @rikiarn, welcome here! Difficult one. A picture says 1000 words. There's some things jump out: The proximity of the neighbouring property. Posit...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What’s your ASHP delta T?

Around 5.5degK at design output. Narrows to about 2.4degK on WC low load. Constant flow system so variable deltaT.

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung heat pump has arrived with damaged fins – do I accept it or send it back?

Damage is cosmetic is appears, but the result of poor handling, so there could be inner damage unseen. Send it back. I've noticed an increasing trend ...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Most treasured kitchen gadget.

The wife (ouch...)

1 year ago
Forum
Well & Truly Off The Grid
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RE: Watch Where Your Installer Fits Motorised Valves

@editor I see. I knew there would be sound reasons. My ASHP is barely big enough, and I've seen aveage room temperatures drop a couple of degrees over...

1 year ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Watch Where Your Installer Fits Motorised Valves

Thanks @Mars. A 'boiler' you say, this is blasphemy!

1 year ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Watch Where Your Installer Fits Motorised Valves

Hi @editor, has the valve failed or the motorised actuator?

1 year ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Grant ASHP - flow temp on display often nonsensical

Hi @crimson, I think field 2 is compressor discharge temperature, field 0 is return water temp, 9 is leaving water temp. Check the Grant installation ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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