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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Dec 1, 2025
Profile Activity
Topics: 23 / Replies: 490
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RE: Air Source Heat Pump problems

ASHP running costs can go up massively when the average daily temperature drops near freezing, defrost cycles start kicking in, and the house heating ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Move along, nothing to see here....
3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 17
Views: 3770
Reply
RE: Our Grant Aerona R32 13kW ASHP installation

@marvinator80 if your Grant installer has used external 3rd party time clock for daily HW cycle and external 3rd party thermostat for CH control, they...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Our Grant Aerona R32 13kW ASHP installation

@marvinator80 great all is installed and running. I have set the cylinder stat to 50degC, which requires the ASHP to provide water at 55degC. It usual...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Advice needed on hybrid system - ASHP not reaching flow temperature

@parmstar Great, les us know how you get on. Piping on your circuit is simple enough, and with a hybrid bivalent system I can see the LLH being of ben...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Advice needed: Hybrid System. ASHP not reaching flow temps

Is it the radiator side of the LLH that's not reaching temperature? Or does the heat pump monitoring show it's not achieving 50degC supply temperature...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New £200 payment for customers off the gas grid

@morgan that one has me scratching my head. First heard of this scheme on the Martin Lewis programme. Until late October I was off mains gas with heat...

3 years ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: 17kW Grant Aerona 3 - advice needed for pre-commissioning struggles

Hi @Denevil, OK, the low rate overnight tariff is a good reason to generate HW overnight, if not the most thermally advantageous time. Defrosts are an...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 17kW Grant Aerona 3 - advice needed for pre-commissioning struggles

Hi @Denevil, just reading this, I'm probably a month or so further on my Grant ASHP system journey, 10kW Aerona3 and 150m2 EPC C house. It's a learnin...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Our Grant Aerona R32 13kW ASHP installation

@marvinator80 for internal pipework, yes. for external, no. Needs to be thicker wall, minimum 19mm (3/4") and weather/water and UV resistant skin. Som...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

We get very cold weeks like this 4-6 weeks of the year. When I first started researching ASHP, I realised it would be more expensive than kerosene, my...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: British Gas kicks off price war for heat pumps

Quite a bit of coverage over on LinkedIn about this one. And so the race to the bottom begins. Price driven installs seldom hit the required quality a...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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