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Halved our ASHP energy consumption

 
Air Source Heat Pumps (ASHPs)
Last Post by Morgan 2 years ago
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 Benseb
(@benseb)
Reputable Member Member
Joined: 3 years ago
Posts: 109
Topic starter 22/11/2022 2:03 pm  

So I checked our Ecodan consumption figures yesterday

 

All of 2021.  Approx 9,000kwh

2022 so far: Approx 4,000kWh

Roughly COP for Nov has gone from 2.7 to 4.3  Not sure how much milder it’s been this year?

With 7 weeks of year left it’s looking very promising!

We tuned things before the heating season this year so I’m hoping that means 2023 will be even cheaper with a full year at a better COP  

 

250sqm house. 30kWh Sunsynk/Pylontech battery system. 14kWp solar. Ecodan 14kW. BMW iX.


   
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 mjr
(@mjr)
Prominent Member Member
Joined: 3 years ago
Posts: 301
22/11/2022 5:30 pm  

The start of Nov has been fairly mild. 

What tunings have you tried, please? 


   
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 batalto
(@batalto)
Famed Member Member
Joined: 4 years ago
Posts: 1091
22/11/2022 5:54 pm  

My latest energy bill for Oct-Nov was just £134 (then take off the government money). So far, so good for this year. I'm about £1000 in credit at the moment. It has been ridiculously mild 

12kW Midea ASHP - 8.4kw solar - 29kWh batteries
262m2 house in Hampshire
Current weather compensation: 47@-2 and 31@17
My current performance can be found - HERE
Heat pump calculator spreadsheet - HERE


   
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 Benseb
(@benseb)
Reputable Member Member
Joined: 3 years ago
Posts: 109
Topic starter 22/11/2022 8:58 pm  

Posted by: @mjr
↑

The start of Nov has been fairly mild. 

What tunings have you tried, please? 

 

Tweaked the weather comp settings

removed all the Tado room stats and UFH zones so it’s just one big zone now

balanced the radiators

 

i have a feeling removing the zoning has worked the best  

 

 

 

250sqm house. 30kWh Sunsynk/Pylontech battery system. 14kWp solar. Ecodan 14kW. BMW iX.


   
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 MikeFitz
(@mikefitz)
Trusted Member Member
Joined: 4 years ago
Posts: 29
22/11/2022 11:42 pm  

I too have an Ecodan and would be interested in the weather comp settings you use.

thanks


   
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 Benseb
(@benseb)
Reputable Member Member
Joined: 3 years ago
Posts: 109
Topic starter 29/11/2022 2:12 pm  

It’s 2c here and foggy. So worst weather for ASHP

 

Flow temp is 42c. No defrost in last 24 hours and house is nice and warm. 

will see what the COP is tomorrow when the figures come through to the app. 

250sqm house. 30kWh Sunsynk/Pylontech battery system. 14kWp solar. Ecodan 14kW. BMW iX.


   
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Morgan
 Morgan
(@morgan)
Noble Member Member
Joined: 4 years ago
Posts: 601
29/11/2022 6:55 pm  

Posted by: @benseb
↑

It’s 2c here and foggy. So worst weather for ASHP

 

Flow temp is 42c. No defrost in last 24 hours and house is nice and warm. 

will see what the COP is tomorrow when the figures come through to the app. 

Yes but what are your weather comp settings?

 

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.


   
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