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Last seen: Aug 23, 2026
Our Vaillant at present (outside temp 18C and the heat pump is off since internal temperature is above the set point) has a target temperature for wat...
they do allow a volumiser to be used, so the obvious question is could a 4 port buffer be configured as a volumiser and stay in warranty?
@pooneil Hi and welcome. I have to say you are thinking like a gas boiler and heat pumps don’t work well being treated that way. It’s best that you ...
Our solar hot water is now 2C above the set temperature the pump got it to at 1pm. Thats the upside. But solar PV, nominal 6kW was generating 5.6 at n...
Great progress so far, keep going you’ll get there! Your Welsh cottage part will have a very long thermal time constant, as you probably already reali...
Mixer showers need virtually identical hot and cold pressures (or at least our new one did) or you need a high flow to mix properly. Our mains varies ...
Keep turning the weather compensation parameter compensation parameter down until the house is at the right temperature for you. Once that’s right y...
@jamespa our Vaillant control box, (wired into domestic power and hence on a domestic circuit trip) didn’t go back on automatically when we reset the ...
That looks as if you’ve found it! I’ve browsed it a bit now. The lots of time I spent (wasted) was playing with the BRE tool before I realised tha...
We have external awnings/canopies to keep the sun out. They reduce the air temperature by 6C in the kitchen which has a large south facing window. The...
@madbilly I can’t help with most of your questions since I don’t work at BRE. I’m a heat pump customer with a professional science/engineering backgro...
You could try/p> BUT i spent ages on it before realising that the installation is what mattered not the pump. If a very efficient 10kW pump is bad...
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Degrees of Separation
Latest Posts
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 7 hours ago
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@kilgorexv, I actually think doing your own calculation...
By Mars , 7 hours ago
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RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 22 hours ago
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RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 1 day ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Swings and Roundabouts, you win some…. ...
By Toodles , 1 day ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 2 days ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 2 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
There is scope for product development here. I for one...
By JamesPa , 2 days ago
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 2 days ago
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RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
By Mars , 5 days ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
First time poster here but I can share my experience as...
By SCH , 6 days ago
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RE: Is it the house or the equipment?
...which, I've found out, is pretty much impossible to ...
By Majordennisbloodnok , 6 days ago
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