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AllyFish
@allyfish
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Joined: Oct 31, 2022
Last seen: Jun 18, 2025
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Topics: 22 / Replies: 468
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RE: New Vaillant 7kW aroTherm ASHP or oil boiler dilemma/decision??

@jml likely a 150 litre cylinder would be ample for you, with immersion backup. The standing losses on modern cylinders are very low, so once charged ...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New Vaillant 7kW aroTherm ASHP or oil boiler dilemma/decision??

Hi @JML, it's great to see these discussions, and the help many experienced and knowledgeable people here will provide. There are a lot of variables t...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

@mellow that will be fine to have the internal pump running on, it will be to remove residual heat and pressure from the condenser inside the ASHP, an...

12 months ago
Forum
Domestic Hot Water & Cylinders
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RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

@mellow this is good to hear. The tried and tested solution of 'pratt about with it until it finally fixes' seems to have come good for you. 😉 Your...

12 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?

Grant charges me £250.80 for a combined service of a 10kW Aerotherm ASHP, plus a 210L pre-plumbed cylinder. 'ServicePlan2' A condition of the product ...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Advice on ASHP choice needed

Excellent observation @derek-m, modern well insulated homes with low infiltration/exfiltration AC/h values tend to suffer from overheating upstairs. T...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Buffer tank in primary circuit?

Hi @Mike, says 65degC on the Samsung Data sheet/p> Other data sources support this:

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Buffer tank in primary circuit?

Hi @roel. Welcome 🙂 The Samsung Gen6 12kW ASHP can heat water up to 65degC, which would charge your DHW tank to 60degC within a reasonably short ti...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

Hi again @mellow, had a play with my DHW timer to see if I can replicate your issue. Right, there are four zones and each can have up to 4 time period...

12 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

Hi @Mellow, I hope I can help, as I have the same Grant 10kW ASHP, Grant branded Heatmiser 4 channel DHW thermostat and a 210L Grant pre-plumbed cylin...

12 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Dodgy Vaillant ASHP foundation & Eddi Diverter Making Central Heating Water Dirty

@jennyross a couple of thought on this one: Vaillant ASHP monobloc support: If the installer used an existing base, such as a patio, then subsequent...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: In the news

InstallerSHOW 2024 opens today at the NEC in Birmingham. Here's a thread for discussions on new products, developments, news, etc. Grant launch thei...

1 year ago
Forum
Well & Truly Off The Grid
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