Forums

Forums
Renewable Heating
Air Source Heat Pum...
Real world COP vs. ...
 
Notifications
Clear all

Does your real world SCOP match up or come close to the COP figures provided by your manufacturer? Poll is created on Nov 30, 2022

  
  
  
  
  
  

Real world COP vs. manufacturer claim

 
Page 1 / 2
Air Source Heat Pumps (ASHPs)
Last Post by Derek M 3 years ago
13 Posts
5 Users
10 Reactions
3,654 Views
RSS
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 4 years ago
Posts: 3275
Topic starter 30/11/2022 11:45 pm  

The purpose of this poll is determine whether your real world, month-on-month, heat pump SCOP comes close to the manufacturer’s claims. 

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


   
Quote
Topic Tags
COP
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 4 years ago
Posts: 3275
Topic starter 30/11/2022 11:50 pm  

Our lifetime COP is 2.7 and the published COP of our 18kW Global Energy Systems heat pump is supposed to be 3.46 at 45C flow temperature.

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


   
ReplyQuote
cathodeRay
 cathodeRay
(@cathoderay)
Famed Member Moderator
Joined: 3 years ago
Posts: 2073
01/12/2022 12:59 pm  

I'm trying to work out the best xxxgate name for this, as in dieselgate. A catchy name will do wonders for publicising the problem. COPgate may be the obvious ones, but to me it sounds like something is wrong with the police, which is probably true, but that's another story. Flowgate was another candidate, but to me it misses the mark. For a moment I considered FreedomGate but that unfairly picks them out. I open the floor to any other suggestions. 

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


   
ReplyQuote
 Oswiu
(@oswiu)
Reputable Member Member
Joined: 3 years ago
Posts: 121
01/12/2022 3:49 pm  

Posted by: @cathoderay
↑

I'm trying to work out the best xxxgate name for this, as in dieselgate. A catchy name will do wonders for publicising the problem. COPgate may be the obvious ones, but to me it sounds like something is wrong with the police, which is probably true, but that's another story. Flowgate was another candidate, but to me it misses the mark. For a moment I considered FreedomGate but that unfairly picks them out. I open the floor to any other suggestions. 

Air-to-Watergate?

 


   
👍
2
ReplyQuote
cathodeRay
 cathodeRay
(@cathoderay)
Famed Member Moderator
Joined: 3 years ago
Posts: 2073
01/12/2022 5:30 pm  

Posted by: @oswiu
↑

Air-to-Watergate?

Very good, I think that will be a hard one to beat!

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


   
ReplyQuote
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 4 years ago
Posts: 3275
Topic starter 01/12/2022 10:56 pm  

@oswiul that’s very good. I may have to steal that as a headline for my next post that I’m working in.

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


   
ReplyQuote



Majordennisbloodnok
 Majordennisbloodnok
(@majordennisbloodnok)
Noble Member Moderator
Joined: 3 years ago
Posts: 832
03/12/2022 11:17 am  

Not the easiest poll to answer since Mitsubishi publish multiple figures at different scenarios.

Perhaps more telling, though, is what the heat pump’s performance has been compared with what our installers gave as a ballpark figure; they said 3 - 3.5 and we’ve achieved 3.22. By any reasonable yardstick, I’d say we received a valid and accurate estimate and I’m happy with that.

105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; sumus solum profundum variat"


   
👍
2
ReplyQuote
 Derek M
(@derek-m)
Illustrious Member Member
Joined: 4 years ago
Posts: 4428
03/12/2022 12:54 pm  

Did you need to make any changes to how your heat pump was initially configured to achieve that figure?

 


   
ReplyQuote
Majordennisbloodnok
 Majordennisbloodnok
(@majordennisbloodnok)
Noble Member Moderator
Joined: 3 years ago
Posts: 832
03/12/2022 1:43 pm  

Nope. It’s running exactly as the installers left it, apart from putting it in holiday mode for a couple of weeks for the obvious reasons.

 

105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; sumus solum profundum variat"


   
👍
1
ReplyQuote
 Derek M
(@derek-m)
Illustrious Member Member
Joined: 4 years ago
Posts: 4428
03/12/2022 1:49 pm  

@majordennisbloodnok

You must have been lucky, and found a real Heating Engineer.


   
👍
1
ReplyQuote
Majordennisbloodnok
 Majordennisbloodnok
(@majordennisbloodnok)
Noble Member Moderator
Joined: 3 years ago
Posts: 832
03/12/2022 2:47 pm  

I was, @derek-m, and I’ve been recommending them ever since. I was particularly impressed when our next door neighbours invited them round to give a quote and they advised that the neighbours’ money would be better spent on insulation than a new heating system. Clearly not in it for a fast buck.

105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; sumus solum profundum variat"


   
👍
1
ReplyQuote
Majordennisbloodnok
 Majordennisbloodnok
(@majordennisbloodnok)
Noble Member Moderator
Joined: 3 years ago
Posts: 832
03/12/2022 3:07 pm  

In addition, @derek-m, that real world COP is being delivered by my (apparently very average - according to one expert) Mitsubishi unit. To me, that goes to show just how unimportant the choice of manufacturer is compared to the overall system being designed correctly. But then you knew that already and have been banging that drum since before I joined here, wouldn’t you say?

105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; sumus solum profundum variat"


   
👍
1
ReplyQuote



Page 1 / 2
Forum Jump:
  Previous Topic
Next Topic  
Related Topics
Topic Tags:  COP (8) ,
Share:

Join Us!

Trusted Installers

Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.

✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available

👉 Find your installer now!

Latest Posts