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Last seen: Mar 11, 2026
@bash similar here, it cost me 33p yesterday to use 4.8kw so no point in switching off yet as it is so cheap.
I think the main reason a2w is more popular in the uk is the grant. Long term, I think air to air will be more common, when the grant is removed for a...
Some Initial Heating Data - Up to 22nd November The last week or so was the first real cold snap so a good test of how the heat pump performs in co...
Can you separate out the scop data between hot water and heating? I.e. is the hot water more efficient than the heating? Also did the £20,000 incl...
I am on Octopus Intelligent @ 6.67p on the overnight rate. I have 18.8kw batteries (no solar) so will be interesting to see how much of my winter usag...
@ashfp Mine does have a buffer tank. That was my experience that they have a contractor who does not do the detailed design of the system but liaises ...
@toodles Fun fact the free electricity session is technically not (quite) free (but very low cost) as the Vat on the energy is not reclaimed - effecti...
@editor Thanks Mars, there was a limited in person commissioning by the installer, then a more detailed run through over the phone with Andy from Boxt...
I had my vaillant arotherm plus 5kw installed by boxt end of March. Cost was £3399 with a £2000 cashback from barclays so will be £1399 total. I pai...
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Latest Posts
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
Our Cosy 9 has been in hush mode for three days. So far...
By KevH , 10 minutes ago
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RE: Air-to-air heat pumps - best models and installers
Are you creating a whole new category for A2A?
By ASHP-BOBBA , 4 hours ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
There isn’t as far as I know, @djh, but you’re welcome ...
By Majordennisbloodnok , 17 hours ago
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RE: Can anyone explain the following behaviour with a Grant Aerona 3 R30 / Smart Controller?
Final Update. Yesterday, I was going through the moti...
By Unsure , 18 hours ago
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RE: How much can an east/west solar solar system be oversized?
Best performance occurs with PV string near inverter no...
By bobflux , 18 hours ago
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RE: Forum updates, announcements & issues
Thank you Mars for all your dedication to improvements;...
By Toodles , 21 hours ago
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RE: Who do I complain to about a poor ECO4 installation, can anyone advise?
Take it one step at a time. If you can get the dhw and...
By JamesPa , 1 day ago
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RE: Selling 2 x Kensa Shoebox 7kw GSHP (New)
Hi Jain, we’ve got an ashp so I’m afraid we won’t be yo...
By Judith , 1 day ago
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No buffer or low loss header Grant controller in sens...
By JamesPa , 2 days ago
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RE: Are We Sleepwalking Into Another Race to the Bottom?
That's an amazing job to get all that in there! A truly...
By Batpred , 2 days ago
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RE: Anyone concerned about GivEnergy?
Thanks for your advice - I'll keep trying with the inst...
By JohnDwyer , 2 days ago
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RE: Plug and play solar. Thoughts?
I am also yet to find a case where an installation that...
By Batpred , 2 days ago
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RE: British Gas vs Octopus Energy vs Heat Geek vs EDF vs Aira vs OVO vs EON.Next vs Boxt
This is what I got from OVO. At least it was quick.. ...
By Batpred , 2 days ago
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RE: IVT greenline HT Plus E - Circulation Pump Constantly On
Welcome to the forums. Irrespective of which brand yo...
By Mars , 3 days ago
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RE: 7.5kW Heat Loss, But Quoted a 10kW Midea. No Re-Pipe, No Buffer Tank. Does This Add Up?
Oh, how I love these old scientists!I'm in with your 5 ...
By LeJamaisContent , 3 days ago
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RE: Jokes and fun posts about heat pumps and renewables
@jamespa Someone who is not easily phased I suppose.
By Toodles , 3 days ago
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@downfield Once OE had removed our gas meter and capped...
By Toodles , 3 days ago
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Living with a Low Loss Header (Or Measure For Measure, it’s All About the Pump)
I know, low loss headers (LLHs) aren’t necessarily ‘low...
By Toodles , 3 days ago
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RE: What is the main ‘dictator’ of Agile’s unit price?
After seeing umpteen negative price slots again today, ...
By ChandyKris , 3 days ago
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RE: The Reality Behind a Failed Heat Pump Installation – and an IWA Insurance Rejection
@ian-w Getting back to the problem in hand, what do yo...
By JamesPa , 3 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@papahuhu Generally, I leave Homely to take care of mat...
By Toodles , 4 days ago
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@judith, glad you found the story interesting. On eff...
By Mars , 4 days ago



