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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)
305 Posts
71 Users
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 Keithb
(@keithb)
Active Member Member
Joined: 3 months ago
Posts: 8
16/04/2026 4:52 pm  

@josejo thanks will check it out.



   
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JamesPa
 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 3 years ago
Posts: 4834
16/04/2026 5:05 pm  

@keithb If you would like to start a thread describing your system and the current problems Im sure someone here will be able to help.  Costs will of course be highest in Dec/Jan/Feb, but should be comparable to gas or oil if you average over the year. 

The most important things to minimise cost are to run 24x7 or thereabouts with weather compensation turned down to the lowest value consistent with heating the house.  If you run it like a boiler and/or dont have weather compensation properly adjusted it will cost more, possibly a lot more than if run correctly, and be less comfortable.  Fortuitously the right way to operate it for efficiency is also the most comfortable and if you get it right (which may  take some tweaking) you should end up with heating that is much more comfortable costing about the same to run.

If you would like to start a thread describing your system and the current problems Im sure someone here will be able to help you achieve that.

I would also recommend you read this introduction to help dispel any myths and provide some background.


This post was modified 4 weeks 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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 claireisamazing
(@claireisamazing)
New Member Member
Joined: 2 weeks ago
Posts: 2
26/04/2026 12:57 pm  

Flawless, by John MacIver, Seaforth Heating and Plumbing, on The Isle of Lewis and Harris: (an entire team and) he were stellar; so efficient, quick, thorough, caring, and a good listener! Gold.

I love being warm now, after 3 years of being cold in Scotland, as I moved here from Maui, Hawaii, and had no idea how to deal with staying warm. Now, I am cosy and grateful on the Isle of Great Bernera, (next to The Isle of Lewis, Outer Hebrides, Scotland, across an 8-sec bridge).

 

I am loving my Mitsubishi Air Source Heating. Flawless.

A few spots on many walls were left a mess, but "walls are not on our docket" is a thing here. It is a Council house that was neglected for 19 Years, so I named it

Taigh an Eala, in Scottish Gaelic, AKA "Swan Nest", and this ugly duckling-near-ruin is evolving slowly, gently and truly into The Swan!

It is an HHP house, Hebridean Housing Partnership, LLC. "We don't paint." is also their thing. And, so I will learn. Ha. 

 

Being warm makes me happy, and feel generous, so I send you...all:

All the Love in the World, 

Claire



   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 4578
Topic starter 26/04/2026 8:05 pm  

@claireisamazing, that’s got to be one of the most positive, uplifting and genuinely refreshing posts we’ve had on the forums in a long time.

It’s easy to get bogged down in the problems, complaints and horror stories (and rightly so when things go wrong), but this is exactly what it looks like when everything just works… good installer, good system and a homeowner who can finally enjoy the result.

There’s something quite powerful in what you’ve said about simply being warm. That’s the whole point of all of this and it often gets lost in the technical noise. Three years of being cold to suddenly feeling comfortable in your own home is no small thing.

Also love the “Swan Nest” transformation… there’s a nice parallel there. A neglected house slowly being brought back to life and a heating system that actually supports that journey rather than fighting it.

Credit where it’s due to John and the team as well… that’s how this industry should look when it’s done properly.

And please do stick around and keep sharing updates as things evolve. Posts like this help balance the narrative and give people confidence that it can be done right.


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 claireisamazing
(@claireisamazing)
New Member Member
Joined: 2 weeks ago
Posts: 2
27/04/2026 9:20 pm  

@editor Thank you. I joined because I really liked your presence and enthusiasm, and guidance. Thank you for caring, and supporting people having hope, a better experience, and learning here.

It is so nice to be satisfied. I make a lot of Complaints, when necessary, so this is wonderful, being warm and happy.

All the best to you,

Claire

Swan Nest



   
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