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Halved our ASHP energy consumption

Air Source Heat Pumps (ASHPs)

Last Post by Morgan 3 years ago

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Benseb

(@benseb)

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Joined: 3 years ago

Posts: 109

Topic starter 22/11/2022 1:03 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)

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Posts: 301

22/11/2022 4:30 pm

The start of Nov has been fairly mild.

What tunings have you tried, please?

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batalto

(@batalto)

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Posts: 1092

22/11/2022 4:54 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)

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Posts: 109

Topic starter 22/11/2022 7:58 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)

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Posts: 29

22/11/2022 10:42 pm

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

thanks

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Benseb

(@benseb)

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Posts: 109

Topic starter 29/11/2022 1:12 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)

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Posts: 671

29/11/2022 5:55 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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