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Last seen: Oct 26, 2026
Hi @jvs197 and welcome! My first observation is that your 8.5kW ASHP is already oversized for your sumptuously-insulated house.So your system design...
Your meter falls within the responsibility of your Energy Supplier, whereas the 100A Service Fuse belongs to your DNO.So you'll need to seek advice on...
Not a photo which screams out "well insulated pipework" @gc61 🤔 Equally, whilst Viessmann could use your third photo for advertising purposes, on...
Yes. That's where we're in agreement. Simply having the units talking to each other isn't reassuring me that they'll arrive a sensible answers - esp...
I don't think you need be concerned about that point. The reason we top balance is to create an even charge in each cell. It means that the balancin...
That's the response I expected from a Viessmann customer.They've established a niche market at the high quality end of the spectrum. I doubt that Vi...
Well @chickenbig - it seems that you're experiencing similar issues with BMS units in parallel, to those I've found with Growatt inverters in parallel...
@gc61 - Does the installation of a high quality (expensive) Viessmann HP mean that you get an equally high quality installation from a Viessmann-train...
Aagh! The first time I read this, I assumed you were talking about export to the grid! The term "export limit(ation)" needs to be reserved by us h...
That's a shame. I don't which DNO you have, but it should be the case that their RIIO-ED2 'agreement' with Ofgem requires them to become DSO in natu...
Neither of those options sounds satisfactory to me. Experience over the past year with trialing seven different BMS units has left me to conclude th...
Erm... as a contributor here who has neither a Sunsynk inverter nor a Seplos BMS, are you telling us that the inverter assesses the SoC of the attache...
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Latest Posts
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RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@susannasaunders can I just add to @rob-of-york s comm...
By JamesPa , 1 hour ago
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RE: Aerotherm and weather compensation
These are likely inked. The basic explanation is tha...
By JamesPa , 1 hour ago
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RE: Electrical works for air to air heat pump
agree with above. I have not had extra costs added wh...
By Batpred , 2 hours ago
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Good to hear that you found a solution. Absolutely a...
By Batpred , 3 hours ago
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RE: Tradespeople on Their Phones: What’s Acceptable When They’re Working in Your Home?
I know most of the folks I use pretty well so I'm fairl...
By EtchedPixels , 10 hours ago
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RE: Are there any comparisons of DHW heat stores around?
@sarahemmm I have done things the opposite way round I ...
By Toodles , 17 hours ago
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RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews I have read you latest response re buffer ...
By JamesPa , 1 day ago
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RE: How will removing the standing charge on gas bills benefit heat pumps?
The BUS grant funding for 2026/27 will run out at the c...
By Rob of York , 2 days ago
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RE: Say hello and introduce yourself
@e-a-west as the good Major said, welcome to the forums...
By Mars , 4 days ago
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RE: How much of your renewable and home setup would still work if the internet went down?
Yes I actually have a copy of a tool that whenever a ce...
By EtchedPixels , 4 days ago
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RE: Indevolt Batteries UK Support & Info Thread
@editor Hi, To resolve this, please tap on the A...
By Indevolt Tech , 4 days ago
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RE: Double or Triple Glazed Windows?
Posted by: @singlespeed With 9 years repairing windo...
By Rob of York , 5 days ago
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@transparent we’re still running a secure version of PH...
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