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AllyFish
@allyfish
Contributor
Noble Member
4198 kWhs
Joined: Oct 31, 2022
Last seen: Mar 14, 2025
Topics: 22 / Replies: 456
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RE: Very noisy Daikin Altherma

@sobo attach some pictures if you can please? It's a new install under MCS, the white noise of the fan impeller plus a hum (not a rattle) of the compr...

2 years ago
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RE: Very noisy Daikin Altherma

Manufacturer's noise levels are usually quoted dB(A) SPL @ 1m free field. This means no reflective surfaces such as walls or floors. It's an unrealist...

2 years ago
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RE: Zehnder ComfoPost CW6 with ASHP?

If you want to include cooling, have you considered air to air heat pumps? Depends on the number of rooms you consider needing cooling, and the visual...

2 years ago
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RE: Rota Disconnections

Modern monobloc heat pumps will not be harmed by power cuts. They don't have a refrigerant pump down system as the low charge quantity doesn't necessi...

2 years ago
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RE: Solar Performance

@toodles thank you. Profile of your monthly generation matches mine. Last two months were a bit lower. Year to date solar production has been 2.9MWh. ...

2 years ago
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RE: Solar Performance

Useful 5 year month-by-month comparative data there @editor. Thank you. August has been something of a solar wash-out for us in the North East. That s...

2 years ago
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RE: 17kw Grant Aerona heat pump not performing

@hughf Chofu use an end suction centrifugal pump however, not an in-line pump. Chances are only the OEM pump will fit.

2 years ago
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RE: 17kw Grant Aerona heat pump not performing

It really sucks Sonix, you've tried to do the right thing and been badly let down. I would be surprised if the plate heat exchanger is badly blocked, ...

2 years ago
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RE: 17kw Grant Aerona heat pump not performing

Hi @Soniks, that's really bad news. Has the ASHP installation been installed by a Grant G1 approved installer? If it has, and is has been serviced and...

2 years ago
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RE: Auxiliary Heating

My Grant has an auxiliary output contact, which is used to control a separate 3kW immersion heater via a relay. It's a back-up heater, supplementary h...

2 years ago
Topic
2 years ago
Replies: 3
Views: 1126
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RE: Barely used Air Source Heat Pump and Water Cylinder

'Elephant in the room' photo that first one showing monobloc location, it was never going to run efficiently. Sadly all too common. Sometimes it's ins...

2 years ago
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