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Air Source Heat Pumps (ASHPs)
Last Post by Mars 11 months ago
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 IvanOpinion
(@ivanopinion)
Estimable Member Member
Joined: 1 year ago
Posts: 72
Topic starter 04/06/2024 11:54 am  

I just came across this German ASHP: https://lambda-wp.at/luft-waermepumpen/ (Use your browser to translate to English.)

Does anyone know why it is not available here (at least I can't find it for sale)? I can see that even the 8kW model is too big to qualify for permitted development under current MCS rules, so that would limit the market. But plenty people end up having to apply for planning, so there should still be a market for it in the UK, especially in view of it having sound power of 42dB, which would really help those who are struggling to get planning permission on noise grounds. (Or am I misunderstanding the sound power figures?)

As I understand it, the size limit for permitted development might be increased, because ASHPs could perform much better if they were allowed to be bigger. Is the Lambda an example of the benefits of allowing a bigger machine?

The other big advantage it seems to have is its SCOP. According to Crog ( https://crog.uk/heatpump/2024/02/15/5Kw-Heat-Pump-SCOP.html ), it is significantly better than Ecodan, Vaillant, Samsung.

The same comments seem to apply to the Ovum Aircube. https://www.ovum.at/en/produkte/luft-aircube-outdoor/


   
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Jancold
 Jancold
(@jancold)
Reputable Member Member
Joined: 2 years ago
Posts: 129
04/06/2024 12:04 pm  

I wish our uk ASHP's could be made more attractive like this. Ours are so tedious and ugly (in my humble opinion).

Daikin 6Kw ASHP.
MG4 EV
1926 Semi with loft and wall cavity insulation, all radiator.


   
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 IvanOpinion
(@ivanopinion)
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Joined: 1 year ago
Posts: 72
Topic starter 04/06/2024 4:46 pm  

The maximum Lambda sound power seems to be 56dB, judging by the tech specs:

LAMBDA-WP.AT "https://lambda-wp.at/wp-content/uploads/2024/01/Technisches-Datenblatt.pdf"

Which is better than, say, Daikin, but not better than some on the UK market.


   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 4 years ago
Posts: 3190
04/06/2024 4:50 pm  

@ivanopinion have you checked the MCS database – most European heat pumps will get MCS accreditation, so if they're on the database, they'll be available in the UK. I'll also ask some people who might know.

Buy Bodge Buster – Homeowner Air Source Heat Pump Installation Guide: https://amzn.to/3NVndlU
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 IvanOpinion
(@ivanopinion)
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Joined: 1 year ago
Posts: 72
Topic starter 04/06/2024 5:07 pm  

I find the MCS database very difficult to understand.


   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 4 years ago
Posts: 3190
07/06/2024 8:03 am  

@ivanopinion I’ve searched the database and this unit isn’t listed, which means it’s probably not available in the UK.

Buy Bodge Buster – Homeowner Air Source Heat Pump Installation Guide: https://amzn.to/3NVndlU
From Zero to Heat Pump Hero: https://amzn.to/4bWkPFb

Subscribe and follow our Homeowners’ Q&A heat pump podcast


   
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