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How would you rate the design, installation and efficiency of your heat pump system? Poll is created on Nov 06, 2022

  
  
  
  
  
  

[Sticky] Rate the quality of your heat pump design and installation

 
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Air Source Heat Pumps (ASHPs)
Last Post by Bash 43 minutes ago
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 Gmuzz
(@gmuzz)
Eminent Member Member
Joined: 3 months ago
Posts: 14
23/02/2026 8:25 am  

@cathoderay in that case the second category needs to be removed as how do you fix a snag without a return visit? 

Im glad you feel flawless is a clear definition but those of us who clearly aren't as all knowing as you perhaps need it clarified in the description!



   
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JamesPa
 JamesPa
(@jamespa)
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Joined: 3 years ago
Posts: 4311
23/02/2026 8:26 am  

@vinma 

That all looks very neat and professional and thank you for posting.  Its good to hear from householders with successful installs to remind us that these are very probably the vast majority, but of course also the people who have relatively little reason to post here!

The only comment I would make is that the hot water pipework should normally be insulated for (at least) the first 1m from the tank.


This post was modified 3 hours ago by JamesPa

4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.


   
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 Woofers64
(@woofers64)
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23/02/2026 8:56 am  

@gmuzz I completely agree. Given the ‘clarification’ that flawless obviously means including small snags, I fail to understand what the difference between the top two poll responses is? It’s not a big deal until the data is used to make claims like ‘only 10% of installations are to the required standards’. I would suggest 5 categories are enough and 1 & 2 should be combined.



   
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cathodeRay
 cathodeRay
(@cathoderay)
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Posts: 2758
23/02/2026 8:59 am  

Posted by: @gmuzz
↑

Im glad you feel flawless is a clear definition but those of us who clearly aren't as all knowing as you perhaps need it clarified in the description!

I think that is an excellent suggestion, I am sure @editor will attend to it.

To be clear. I see flaw-less as fault-less, and a fault or defect is something that compromises operation in some non-trivial way or other, if such a flaw isn't present, then the installation is in my view flaw-less.

I suggest there may be another category above flawless, one in which the installer has gone above and beyond the call of duty. I have no doubt such installers and installations exist, indeed on one level (but not perhaps on some other minor points) my own installer achieved just that. Four years on and I am still grateful to him. 

 


Midea 14kW (for now...) ASHP heating both building and DHW


   
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 Woofers64
(@woofers64)
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23/02/2026 9:06 am  

@cathoderay did you re read your first paragraph? To be fair it does a very good job of illustrating my point. Do you really think the rest of the population has your interpretation of what flawless means, I don’t.

You said “Flawless as the top category is fine. It does not mean perfect, it means flaw-less, no flaws.” Really? 

The Poll wording is actually “Flawless – perfect in every sense”, seems a bit contradictory based on your definition.

You suggested “But on this we can agree, flawless can include snags (which haven't reached the defect/fault threshold, hiccups if you like), and a large part of how an installation remains flawless is how any snags/hiccups get dealt with.”

I don’t agree, but if you’re correct, how does poll option one differ from option two?

 



   
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cathodeRay
 cathodeRay
(@cathoderay)
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Joined: 4 years ago
Posts: 2758
23/02/2026 9:11 am  

@woofers64 — I do agree the top two definitions and their distinction could be clarified and that is why I said I am sure @editor will attend to it.


Midea 14kW (for now...) ASHP heating both building and DHW


   
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 Bash
(@bash)
Reputable Member Member
Joined: 4 months ago
Posts: 144
23/02/2026 10:43 am  

When I saw the world flawless that immediately to me meant perfect.

I was once told aiming for perfection is pretty much impossible, unachievable and comes with an unnecessary level of stress and anxiety for all involved and best off avoided.

If it was me I'd still leave the flawless category in as someone may actually have achieved this (which would be a very small number), but add in another category "excellent", which would cover the best installations.



   
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