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IvanOpinion

@ivanopinion

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Estimable Member

805 kWhs

Joined: Mar 22, 2024
Last seen: Feb 21, 2025

Topics: 1 / Replies: 71

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RE: Aira Heat Pump: Stylish Scandinavian Heating

Agreed, but you would also have to standardise the outdoor temperature and the humidity, so the defrost is realistic for the UK. And you'd also need d...

5 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Aira Heat Pump: Stylish Scandinavian Heating

While that's true, I understand the Daikin 4kW is the same as their 8kW model, with software to limit the maximum output to 4kW. So, if anything, it i...

5 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: British Gas versus Octopus: Two possible heat pump routes - how to evaluate them?

I disagree it is unlikely. It all depends. 15% is the difference between 5.8kw and 6.7kw, so maybe a 7kw machine would be OK for both levels of heat l...

7 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: British Gas versus Octopus: Two possible heat pump routes - how to evaluate them?

To be fair, though, you don't want to design the system on the basis of the absolute lowest temperature, because it will then be overpowered for the e...

7 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Aira Heat Pump: Stylish Scandinavian Heating

In practice, I find my radiators feel luke warm when the system tells me the flow temp is 30 degrees. Which is far less than 37 degrees, so I was puzz...

7 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: COP or Cost Per kWh

You may be right, but is that one day just a one-off or is it representative of the norm? If there are figures to show that carbon intensity normally ...

7 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: How loud are the sound levels of internal components like water heater, buffer tank, etc. in an air source heat pump set up?

The biggest noise impact is that some of our toilet cisterns are noisy when they fill, due to the water being at mains pressure.

7 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: COP or Cost Per kWh

The price is still a pretty good guide, I'd have thought. Agile peaks from 4-7pm every day and that is surely because the demand that spikes then can ...

7 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Sound levels of internal components

I haven't heard any discernible noise from the internal parts of my system, which is a Vaillant. Admittedly, I have no buffer, but I doubt they are no...

7 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Two possible heat pump routes - how to evaluate them?

I would think this would be beyond the skills of most householders. My install just finished and it took them about 25 person-days and having observed...

7 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Aira Heat Pump: Stylish Scandinavian Heating

Yes, Vaillant. But Aira were willing to give me that if I paid an extra £1k, which would still have been cheaper than HG. To be fair, a chunk of the ...

7 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Aira Heat Pump: Stylish Scandinavian Heating

Just to round off some loose ends from my contributions to this thread, in the end I decided not to go with Aira. I realised that the various compromi...

7 months ago

Forum

Air Source Heat Pumps (ASHPs)