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Which 6kw to 8kw ASHP can modulate down the lowest ?

 
Air Source Heat Pumps (ASHPs)
Last Post by Damon Blakemore 10 months ago
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 rob heatpump bob
(@rob-heatpump-bob)
Active Member Member
Joined: 11 months ago
Posts: 5
Topic starter 25/11/2025 11:34 pm   [#2634]

hi guys

Do "we" know which brands of 6kw to 8kw ASHPs offer the lowest level of modulate ?

 

any thoughts ....



   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 6 years ago
Posts: 4887
25/11/2025 11:49 pm  

That’s one for the installers. @patrickvito @damon @aventus-eco any suggestions please.


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 Damon Blakemore
(@damon)
Eminent Member Member Professional+
Joined: 3 years ago
Posts: 17
26/11/2025 6:55 am  

@editor the easiest way to find out is to look at the data on open energy monitor.

we seem to have a fascination now with low end mod which good control it will shut off down there anyway and there’s nothing better than it being off. 

also be more careful with the units drop off rather than the low end mod, the 8 will probs only give you 6 and the 6 will only give you 5.

with how these things work the low end isn’t always going to be that great but just use a good Heatpump, a Viessmann, Vaillant grant or Nibe. They use degree minutes to keep the compressor off.

we have a weird fascination with wanting crazy long runs times with I think is daft. 


This post was modified 10 months ago by Mars

Professional heat pump installer: Blakemore Renewables


   
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