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Last seen: Aug 5, 2026
February.stats are now in. This was our first full month with an ASHP, so I was really looking forward to the results. To set the context, this Februa...
@callum_62 That does sound excessive. We are in a slightly older new build, around 12 years old, 4 beds (and a study) and three reception rooms includ...
@njt Same here. We have 6.9 solar and a 6.5 kWh Growatt battery. Since, I switched to cosy after the heat pump install, we fill up the battery thrice ...
@vsmith1 We switched from an EV tariff to cosy tariff after the heat pump installation. We run hot water twice a day during the cheap period, one hour...
@vsmith1 I too took saw that today. Pretty chuffed with heating CoP of 4.2 and hot water CoP of 3. Especially, when the weather was particularly cold.
@broadsman That's a good shout. I can't see the flow data, but can see input power and delivered heat by hour. Also, can track input electricity on th...
Really interesting thread, thanks for the insights everyone. We recently had an Aira heat pump installed, and straightaway I realised that we need t...
@andrewj Earlier with the gas boiler and Tado TRVs controlling the temperature, I used to think 18 is the right temperature. As otherwise the room use...
@mikeh It's running on an off peak schedule now. To be honest, I don't see a drop in COP. There was only 10 minutes of hot water left yesterday night,...
@mikeh I thought so too, the efficiency can't be that bad if you run the hot water once at night. Yes, maybe when you have visitors and during Christm...
@jamespa Few others on the forum mentioned about the 18 degrees too. But, the design engineer didn't budge. I wonder whether that's to keep the existi...
@mikeh Watched your latest YouTube video today. Thanks for the good work. In the video you talk about the hot water schedule during off-peak hours. ...
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Degrees of Separation
Latest Posts
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
Depending on your flow temperature you should get a SCO...
By JamesPa , 4 hours ago
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RE: PV and battery long payback - sense check query
They can also obtain smart meter data with a w...
By EtchedPixels , 5 hours ago
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I don't notice mine defrosting, and most of the time Im...
By JamesPa , 5 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
Not interested in a plug in device, or 800w. Just need ...
By dansus , 9 hours ago
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RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
Kind of you, @calumm, but it was @f1p who did the heavy...
By Majordennisbloodnok , 16 hours ago
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RE: Electricity price predictions
2. As EV ownershp increases it'll certainly increase de...
By EtchedPixels , 1 day ago
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I meant to say I cannot register my kit at Energyplus… ...
By Batpred , 1 day ago
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RE: HomeTherma Is Live: A New Home-Energy Platform Built Around the Homeowner
Signed up!
By bobflux , 3 days ago
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RE: Has anyone seen this problem before? Huge anticycling times
Oh dear. Glad it was replaced. I have been mighty imp...
By JamesPa , 4 days ago
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RE: Can I start an argument about buffer tanks please? 🙂
Dont, just adjust the LSVs to get different temperature...
By JamesPa , 4 days ago
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RE: Heat pump running costs – what has actually worked for you?
I installed the air source heat pump in January 2026, i...
By bobflux , 4 days ago
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RE: Grant Aerona Air to Water R290 6.5 kW - Quiet Mark and Silent Running
Thats all interesting. DHW on my Vailant seems to respe...
By JamesPa , 4 days ago
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