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Last seen: Mar 3, 2026
Has anyone been able to find meaningful information about the TriVal option on Vaillant SensoComfort / AroTherm Plus systems? It sounds like it ought ...
@papahuhu Thanks for that .. OvO was offering 15p/unit 24x7 with a cap at 6000 kWh as I recall. I'd love to be able to use solar but a maritime climat...
@toodles I'm running at 4.5 kW just now. Assume two parallel 13.5 kWh Powerwalls, they would charge in 2.7 hrs @ 5 kW each and the heat pump would nee...
@papahuhu With OvO withdrawing their Heat Pump Plus tariff I'm suddenly interested in alternatives but I had rather assumed that a time of use tariff ...
@transparent D'Oh - I did look before I posted but I missed that one ...
@editor Mars, Much kudos to you for all your enthusiasm and hard work here! It seems we start 2026 with the rug being removed from under us as discou...
@derek-m .. Of course though *you* may forward plan it doesn't follow that the next person does and the utility companies have to add a safety margin....
@johnmo An AroTHERM 12-14 kW ASHP can draw 23.3 amps so let's say your big old stone manse with its outbuildings needs two of those and you have an EV...
@editor Hi - An update to my earlier introductionOur hybrid ASHP / Oil boiler system went in in April and has been doing its thing without major issue...
I can report one tangible result of putting in a heat pump (ASHP) - I had to provide an up-to-date EPC as part of the grant conditions and my house we...
@toodles Sounds like you're sorted - these things niggle though once you spot them. I totted up the bare metal on the flow side of my system and I ca...
@toodles undesirable but insignificant sums it up pretty well though the cumulative effect may be another matter. I have a retro-fitted hybrid system...
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Latest Posts
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
Hush mode now released. I've not tried it yet. Should b...
By swwils , 13 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 , 21 minutes 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 , 13 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 , 14 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 , 14 hours ago
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RE: Forum updates, announcements & issues
Thank you Mars for all your dedication to improvements;...
By Toodles , 17 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 , 23 hours 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 , 23 hours ago
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No buffer or low loss header Grant controller in sens...
By JamesPa , 1 day 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 , 1 day 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 , 2 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 , 2 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


