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Kev M
@kev-m
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Joined: Mar 5, 2021
Last seen: Jan 8, 2025
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Topics: 10 / Replies: 1266
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RE: Massive Electricity Cost

I thought the COP would be better with the bigger output at these high demands and it is. If the COP stays at 2.4 then the 16kW should deliver 12.4kW ...

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

It looks like that, at the design ambient temperature, the ASHP is unable to achieve the design flow. It certainly sounds like your ASHP is under-powe...

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

It looks like that, at the design ambient temperature, the ASHP is unable to achieve the design flow. It certainly sounds like your ASHP is under-powe...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Clarification needed for Ecodan ASHP settings

Most ASHPs can modulate down to about 30-40% of their nominal rating. So for a 10kW ASHP, 3kW. If the target flow is 35 deg and the ASHP only needs ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Clarification needed for Ecodan ASHP settings

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Effects of Low Loss Header (LLH) removal - Initial findings

@batalto so with the LLH, the ASHP is using more energy but delivering the same. Is this because energy is being emitted from the LLH like a radi...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Effects of Low Loss Header (LLH) removal - Initial findings

That's encouraging. To save me copying the numbers, is the energy delivered about the same before and after? The consumption is lower and the COP loo...

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

Lucas, Good suggestions so far. Can you give us an idea of the size, age and type of house? It's hard to say whether your costs are high without k...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Damage (by installers?) on back of brand new heat pump

I'm sure if their new car had visible damage, most owners would (rightly) insist on it being fixed or replaced. Installers who put in ASHPs with dama...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: 14kW Midea ASHP in an old leaky building

@cathoderay I have the same issue and I just switch off between 12 and 5am. My house is back up to where it should be in 2-3 hours in the morning,...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: How to best configure my Mitsubishi heat pump to work effectively?

It's the other flows, not the boiler ones you should be looking at. I think 'boiler' = immersion in Mitsubishi. Don't worry about the system off wa...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Samsung 12kw efficient running. The little tweaks.

As long as you don't close off too much of the system you can safely turn down a bedroom TRV. If you shut down too many you'll reduce demand and you...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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