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Last seen: May 8, 2026
I think as gas and oil boilers get phased out, low install cost heat storage solutions will seem too attractive on Octopus go - so I agree, Octopus wo...
@jvs197 I suggest that you experiment with your present gas system, so that you can determine how well an ashp could work. It’s what I did before i...
We swapped to a HP 2 years ago, after running a regular gas boiler for many years. We have smart meters, so could correlate daily gas kWh with the out...
s The rule of thumb I’ve seen has been total yearly kWh/2000 gives the peak power in kW. It works for us- but would give 36000/2000=18kW. Are you ...
Yes, probably it does matter, depending on the rest of your system. If you have a heat exchanger, it's likely using it the wrong way around, which wi...
There are so many insurance options these days, which I believe most people would be better off without. Bike, phone, washing m/c, heating system, pe...
Once you've cut out the compressor, will there be swarf in the cut pipes? If it's stored badly, will the sump oil get water in it which turns it to a...
Correct me if I'm wrong, but is heatmiser an on/off thermostat type controller? Can you describe your GSHP a bit more: Make / model /power? Is it...
I can't think of a single reason why you would want to operate a counterflow heat exchanger the wrong way around, the inefficient parallel way, in a h...
@transparent I'm "listening" eagerly to this thread too! We have old 4kWp FIT PV with an MCS form, and I now have dno approval for an additional, ...
@cathoderay Apols for badgering on this topic about other controls, but do you really have just have weather compensation only running ? As I under...
[quote data-userid="5190" data-postid="19305" A volumiser in the primary, together with a good insulation of the PHX to reduce delta T to around 1C m...
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Latest Posts
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Mentally you have to separate the ac side and the DC si...
By JamesPa , 10 hours ago
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RE: Help me keep the faith with my air source heat pump installation
My heating developed a really severe case of noise and ...
By JamesPa , 12 hours ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
@l2jad I was just thinking all things being equal. Our ...
By AndrewJ , 19 hours ago
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RE: Heat Pump Manufacturers Recommending Buffer Tanks
Hopefully the ambient temperature sensor drives a weath...
By JamesPa , 1 day ago
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RE: How many people are happy with their ASHP and do you believe them?
Im looking into these and my figures. The think that I...
By JamesPa , 1 day ago
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Hi, Does anybody have experience with Heat Geek insta...
By sttpd1917 , 1 day ago
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RE: Heat Pump Operation in Summer - Valliant 7kW
Yes - we use our Mitsi 14kW unit for cooling. I have j...
By downfield , 2 days ago
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I will soon be struggling. Admittedly it is the summer,...
By Batpred , 2 days ago
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RE: Indevolt Batteries UK Support & Info Thread
Not known yet. I've asked a local Councillor to follo...
By Transparent , 2 days ago
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Hard to tell but I think I have placed the arrow on wha...
By ASHP-BOBBA , 3 days ago
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RE: Who do I complain to about a poor ECO4 installation, can anyone advise?
Great. My guess is that you will need to re-adjust yo...
By JamesPa , 3 days ago
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RE: UK warm homes plan - how can it be delivered?
I know it is not as simple as going from a fossil fuel ...
By Batpred , 3 days ago
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@editor this is great news.
By ASHP-BOBBA , 4 days ago
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RE: Daikin Altherma 3 with Fan Coils in Puglia (Italy)… Sanity Check on System Operation
AH (Absolute humidity) is grams of moisture per volume ...
By bobflux , 4 days ago



