Last seen: Sep 9, 2025
Thanks @rusty. There's lots of correct detail in what you write, which indicates that you have been talking to the right people. However, it is usua...
Erm... what's the return water temperature for your boiler in its present situation? If it's above 45degC, then your HP won't be able to add anythin...
These look to me like they are 5kWh rack-mount boxes.So they'll probably have 100Ah cells inside. I wonder why they've decided to start from a relat...
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...
Latest Posts
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RE: 300 Liter Tank - Do I have to heat it all?
I do not think that a 300l cylinder is too big for a tw...
By jamespetts , 8 minutes ago
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RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
Is that heat loss, or maximum output of the ASHP? Unde...
By Scalextrix , 16 hours ago
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@morgan Fully agree with you. It shouldn't be the homeo...
By HCas , 18 hours ago
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RE: Solar Thermal DHW and ASHP
@judith That makes sense to me! If I was in @alex_n '...
By HCas , 19 hours ago
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RE: Vaillant aroTherm Plus 10kW thoughts?
Good unit. And the 10 kW is the same as the 12 kW I ...
By HCas , 19 hours ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
@judith thanks for your suggestions. Starting from col...
By GrahamF , 22 hours ago
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RE: Inventor (Midea) Heat Pump short cycling advice
I switched to "fan coil mode" to be able to set water t...
By immunity , 24 hours ago
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RE: DESNZ doing a survey which asks the right questions!
Without a survey their only source of data is probably ...
By JamesPa , 1 day ago
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RE: Can you help with our research: solar panels, EV chargers, home batteries, heat pumps?
Just done your survey!
By Judith , 2 days ago
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RE: Failing heat pump system - seeking thoughts on a rebuild
@cleardene-ashp just thinking about your issues here. Y...
By Judith , 2 days ago
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RE: Midea ASHP – how to set weather compensation
@cathoderay OK let's wait and see, it sounds an interes...
By Tasos , 2 days ago
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RE: What is the Heat Geek Guarantee?
@judith, I’m with you on Heat Geek, but there really do...
By Mars , 2 days ago
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RE: Electricity price predictions
Community energy installations are a great idea, but th...
By Scalextrix , 3 days ago
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RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
Ooh, heat pumps in neon blue wrap 🤣 🤣 &...
By Old_Scientist , 3 days ago
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@profzarkov Good to know in case it ever happens to me...
By bontwoody , 4 days ago
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RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?
I mean, is this surprising? The local installers in my ...
By Alex , 4 days ago
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@old_scientist sorry, I should have made it clear that ...
By GrahamF , 4 days ago
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RE: Boiling Mad: Exposing Radiatorgate
Hi @Rob, I’d be more than happy to contribute. I have ...
By DREI , 4 days ago
