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Air to Air Heat Pumps

dgclimatecontrol · 2025-08-21T11:30:23Z

As an installer and user of these systems for 30 years, Ive found any many cases they offer lower cost heating, fast and effective heating and virtually guaranteed to work (plus cost effective to buy) What is other peoples experience?

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Air Source Heat Pumps (ASHPs)

Last Post by Batpred 2 months ago

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EtchedPixels

(@etchedpixels)

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Joined: 2 months ago

Posts: 124

06/06/2026 12:17 pm

The fix for allowing a few electric heaters is actually really important because it's common even in a full air/air setup that you'd want something like a bathroom electric towel rail.

That the 100% rule drives risk is the bigger problem. People don't like risk and that puts them off change. Hybrid EVs are a great lesson in that. Risk averse people will transition in steps even if the mid step isn't as good as taking the big leap.

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Batpred

(@batpred)

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Joined: 2 years ago

Posts: 1089

06/06/2026 12:50 pm

@etchedpixels

I understand 80/20 rule, still HSE would not allow a 20% service in a fossil fuel boiler. Electric and immersion heaters are however virtually maintenance free, so I cannot see any reason to not keep them.

But as our electricity is planned to be 95% fossil fuel free in 5 years, net0 strategy and so the limited incentives for heat pumps need to demonstrate removal of boilers. I suspect anyone not looking to leverage BUS is still able to keep backup heating systems. Personally we do not want our space to be used by unnecessary systems.

Once the country moves onto the next stage of the transition and fossil fuels start paying a bigger share of the carbon budget they are using, could the market enable more individual choices?

8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kW export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; Vaillant Arotherm Pro 7kW; 100Amp head, HA lab on mini PC

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bobflux

(@bobflux)

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08/06/2026 8:48 pm

Posted by: @batpred

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But as our electricity is planned to be 95% fossil fuel free in 5 years

Sounds about as reliable as when Daddy Elon says he'll be on Mars by that time.

Unless the actual meaning is "95% of the electricity you'll be able to get will be fossil free otherwise we turn the lights off" then yeah obviously.

Not keeping a fossil backup for heating might not be such a good idea...

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Batpred

(@batpred)

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08/06/2026 9:20 pm

Posted by: @bobflux

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Posted by: @batpred

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But as our electricity is planned to be 95% fossil fuel free in 5 years

Sounds about as reliable as when Daddy Elon says he'll be on Mars by that time.

These are the GB plans. This must be achievable, like there is plenty of wind power being connected.

And of course that carbon goal has already been achieved by many other countries (but a lot more countries are behind GB). I remember posting links before.

Clearly nuclear will be needed. Fossil fuel is the 5% for when it gets really tough..

8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kW export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; Vaillant Arotherm Pro 7kW; 100Amp head, HA lab on mini PC

👍

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