Last seen: Dec 26, 2025
@jamespa The mechanical engineer in me wants to attempt to answer. But after decades in finance and management consulting, unfortunately I am incapabl...
@jamespa This is a 4 port buffer tank.
When I asked during the design phase, I was told this is to do with defrost cycles. We have achieved a good SCOP so far and are very happy with the pe...
@bontwoody Maybe one for @editor to consider whether a second hand battery shop on the forum might be worth it! Jokes apart, totally with you on the...
@bontwoody Totally agree. Even without a heat pump, if a 5 kWh battery helps storing the PV power generated during the daytime in spring, summer and a...
For our set-up, Octopus GO has been the best option from March to October. But, from November to February, Cosy is likely to be the better option, as ...
@old_scientist Cosy is a really good tariff for heat pump owners. The ability to run hot water during the 1 pm.to 4 pm period when the outdoor tempera...
@old_scientist With a 7.2 kWp south facing array, you should be generating enough during winter months as well. I am definitely jealous as our winter ...
Watching Gary Does Solar’s latest YouTube video on the future of export tariffs got me thinking about how I would adapt if Octopus were to drop the ex...
@toodles Few days in the year when I wish we had gone for an A2A heat pump than the current A2W system!
@toodles I have noticed that on some.days it takes a while to update the costs on the Octopus energy usage page or in the app. If not, I would be keen...
Thanks @mikeh. Then I will also go back to non smart tariff control. I just wanted to try this out before the heating season starts, so would have to ...
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RE: Connecting Growatt SPH5000 over wired ethernet rather than wireless
@z8lccda, you’ve just described my setup - Growatt SPH5...
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Data Accuracy Problem: Daikin 8kW Heat Pump's Onecta App vs MMI Power Consumption
Good Evening. Has anyone found the following when usi...
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RE: Help needed with Grant Aerona 3 issues
First time posting so bear with me. Some bits that have...
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RE: Mitsu PUHZ-SW120YHA + EHSC-VM20Uk - Performance
All understood. Obviously its a bit house de...
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RE: Water Hammer After Heat Pump Install
From OPs description I had the impression (quite possib...
By JamesPa , 10 hours ago
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RE: Who's your electricity provider and what's your tariff?
@majordennisbloodnok This may be a better thread to ...
By Batpred , 1 day ago
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RE: Best Heat Pump Brand in the UK
Last Call to Vote & Win! Haven't voted for your Hea...
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RE: Solis S6-EH1P8K-L-PLUS – Why I Chose It and What I’ve Learned So Far
Interesting question. To be frank, since I have no inte...
By Majordennisbloodnok , 2 days ago
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RE: Changing from 4-port buffer to volumizer
@andy1618 see the very sage advice from @editor above. ...
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RE: New Fogstar 15.5kWh upright solution
The video shows the JK balancer, but the connection of ...
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RE: Ecodan unable to hit legionella target temp - what's the consensus?
@9jwr9 Hi, yes this is the issue with every (stand alon...
By ASHP-BOBBA , 2 days ago
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RE: Help me keep the faith with my air source heat pump installation
@adamk FWIW I managed unintentionally to 'coax' mine in...
By JamesPa , 2 days ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
You are in essence right. Adia only works with selecte...
By JamesPa , 2 days ago
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No, you haven’t missed out, @batpred. This thread’ll st...
By Majordennisbloodnok , 2 days ago
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RE: Tesla Powerwall – More of a ‘Luxury’ Than an ROI Winner!
Also, though they weren’t prepared to match the price t...
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RE: How long will your energy contract last?
My INTELLI-FIX-12M-25-08-29 has less than 12 months to ...
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RE: GivEnergy 2025 forthcoming batteries and inverters
Then, perhaps @toodles , you should've made a submissio...
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RE: Balancing financial efficiency and comfort using the Octopus Cosy tariff
I am wondering if anyone with an EV could find the 7p/k...
By Batpred , 2 days ago
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Possibly, but it would also reduce DeltaT across the em...
By JamesPa , 2 days ago

