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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Nov 5, 2025
Profile Activity
Topics: 23 / Replies: 486
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RE: ASHP & UFH

Great stuff - sound like to you a very good plan. EPCs can be notoriously inaccurate. It was only until quite recently the installation of a heat pump...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP & UFH

Always worth insulating the floor from the garage underside if there's reasonable access. If you store much in there, including cars, I would fire pro...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Homely launched for Grant Aerona ASHP control

@sunandair hi. Sorry for the delayed reply. I was considering the Grant Smart Controller as a retrofit for my ASHP, and had the good fortune to be off...

2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Aira Heat Pump: Stylish Scandinavian Heating

I had a good chuckle at this. 😉 The Aira YouTube product launch was targeting Germany, Italy and the UK markets, as a group launch of branded Vaillan...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Aira Heat Pump: Stylish Scandinavian Heating

No data sheets or produce literature yet, but a very glossy product launch. It's a branded Vaillant product, so it should be good. I'm not a great fan...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Interesting article - flexible TOU tariffs, BESS and heat pumps
2 years ago
Forum
Energy Storage
Replies: 2
Views: 1374
Reply
RE: Refrigerant in Daikin Altherma HHT taking hours to heatup

That's revealing. The house may be super insulated, but typically a Victorian property would have solid walls and non-insulated floors. Do you know mu...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Refrigerant in Daikin Altherma HHT taking hours to heatup

Depends on the heat loss of your house and how warm you are wanting it. Defrost can effectively de-rate a heat pump's output capacity if the time take...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Refrigerant in Daikin Altherma HHT taking hours to heatup

@signorjim delta T flow and return of 10degC is quite high for an ASHP. At 10degC delta T and 17l/min flow it's theoretically giving out 10x4.2x(17/60...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Refrigerant in Daikin Altherma HHT taking hours to heatup

Hi @signorjim, the slow rise in leaving water temperature from your ASHP [I presume you mean, rather than refrigerant temperature], may be due to the ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Maximising Savings: Navigating My First Year with Octopus Energy and Heat Pump Running Costs

Agree, heating oil prices vary short-term seasonally, and longer-term with the cost of a barrel of oil. We found we could always purchase it for less ...

2 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Maximising Savings: Navigating My First Year with Octopus Energy and Heat Pump Running Costs

@steve81uk and @toodles, we're all on a similar journey here. Perhaps to a lesser or greater extent of data acquisition, analysis and statistical geek...

2 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
Page 14 / 43
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