Last seen: Dec 21, 2025
This site is one of the most comprehensive for what size heat pump you might need, as you may have read too big a pump can’t be less efficient T...
This is a very interesting thread. Our ashp is being fitted soon, and we’re going onto OE cosy and using our battery to charge up to get over the peak...
@transparent I did comment but I would get an E at best since I didn’t answer all of the questions in sections 1& 3 and didn’t touch 2. My input...
@roel You also may already have a buffer which can also be called a low loss header. @johnmo put in some schematics above. You might be able to trace ...
Derek’s approach (as usual) is an excellent one. You do not need a buffer, just a volumiser. Once you understand how your system balances up then it’s...
I was thinking of your analysis but I couldn’t recall who pointed it out and hence sorry I couldn’t give you credit. Sorry! There have been other st...
@pie eater the difference you can’t see will be air leakage usually. There are many assumptions about how many air changes per hour your house has due...
Aaaaaah, that’s gas boiler thinking! and the recipe for problems with ashp. As several people are explaining better then I can, an over-sized pump wil...
The reason the other heat pumps failed may be that the houses have zones, NOT good with heat pumps, and as the pumps is big then it needs a minimum wa...
Oh dear! Don't let them change radiator for lower wattage ones! There are experts on the forum who would like to see the full proposals. Can you upl...
@pie_eater our install date is in September we’ve just had some bigger radiators changed so far, (not all rooms needed larger). it is pure BS to say...
@lucia you can’t improve the emitters to get more wattage out of a heat pump. All you can do is put an electric fire on! or wear more clothes and l...
Latest Posts
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
Bearing in mind that Octopus can apparently monitor our...
By KevH , 1 hour ago
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RE: Speedcomfort radiator fans
My take on Speedcomfort radiator fans: If anyone w...
By Mars , 2 hours ago
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RE: Midea ASHP – how to set weather compensation
@pash44pump I have yet to come across any Clivet or Mid...
By benson , 2 hours ago
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RE: Who's your electricity provider and what's your tariff?
@transparent Thanks, this helps. Could it be that St...
By Batpred , 3 hours ago
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RE: Clivet ASHPs and weather compensation
Simon did share a lot of very helpful advice. On furthe...
By ambris , 3 hours ago
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My Powerwall 3 Consumes 3-4 kWh/Day in Self-Consumption: Is This Normal?
I had solar panels & Powerwall 3 installed in Augus...
By Caron , 4 hours ago
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MyVaillant Connect Regular Disconnect
A couple of weeks ago the MyVaillant Controller had a r...
By buckwem , 15 hours ago
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RE: Setback savings - fact or fiction?
I could, but I think we can do better, by plotting hour...
By cathodeRay , 20 hours ago
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RE: Advice on internal circulation pump noise
Extend the primary branch and make sure you have more t...
By ASHP-BOBBA , 23 hours ago
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RE: External pipework insulation
Oh Dear! that's appalling pipe work, should've been in ...
By dgclimatecontrol , 1 day ago
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RE: Jokes and fun posts about heat pumps and renewables
By Morgan , 1 day ago
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RE: Controlling Daikin Altherma via P1P2 and Home Assistant
On the contrary, @toodles, that’s a lot of help. I’d ne...
By Majordennisbloodnok , 1 day ago
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Parsnip, Bacon & Coconut Milk Soup
First let me say, I am only a cook because I am human a...
By Toodles , 2 days ago
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RE: Electricity price predictions
Ben Watts posted on LinkedIn that he had updated this w...
By Judith , 2 days ago
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RE: The good, the bad and the not that great – my heat pump installation
Small update, Emailed and Spoke to Midea UK and they ...
By Burtis , 2 days ago
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RE: Solis S6-EH1P8K-L-PLUS – Why I Chose It and What I’ve Learned So Far
@bash Octopus does charge for the admin. The process al...
By Batpred , 2 days ago
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RE: New Fogstar 15.5kWh upright solution
Issues still under investigation by Solis... Fogstar ...
By Batpred , 2 days ago
