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Last seen: Sep 17, 2026
Thats good. Keep the faith, rad swaps are easy and rads are dirt cheap. Even I can do 2.5 a day, I am not a plumber and absolutely detest plumbing!
Total and complete madness! Better would have been to leave the upstairs rads, make the downstairs ones bigger if there is room, and drop FT, or just...
All sounds good and like you know what you are doing. Radiator balancing can be tedious and the poor control that LSVs give really doesn't help. I ha...
Firstly welcome to the forums. I hope you are running your heat pump 24*7 with any TRVs and thermostats set well above the desired temperat...
(Almost) all heat pumps do defrost by taking heat from the water in the emitters and using that to melt the ice. This causes the flow temperature to ...
From first principles I would say: Definitely design for a single low flow temperature, not different flow temperatures. Definitely calcu...
This is actually normal, or at least its more or less what I see with my Vaillant and there is an obvious logical explanation. The heat pump has to w...
Reducing radiator size is just plain madness in most cases, whatever the survey may say. You can always turn them down. Why on earth would you waste...
@benson very well done for implementing this with such a simple UI. FWIW its functionally similar to what Vaillant heat pumps do if you chan...
That's really helpful. Yor last sentence confirms it's not to do with the ashp as such. When your ashp was installed you were also upgraded from an...
All understood. Obviously its a bit house dependent but many people do find that pure weather compensation is the way to go both for comfor...
From OPs description I had the impression (quite possibly wrongly) that the water hammer is associated with the domestic hot/cold water not the heatin...
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Degrees of Separation
Latest Posts
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RE: Heat Pump deployment statistics: June 2026
To my eyes, sat behind all of this is a basic policy ma...
By Temperature_Gradient , 10 hours ago
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Thank you @majordennisbloodnok – that means a lot, part...
By Mars , 14 hours ago
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We’ve just passed 20 million forum views! 🎉
It's official. The Renewable Heating Hub forums have of...
By Mars , 14 hours ago
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RE: Missing flow temperature in Heat Geek proposal
That calculation is reasonable, output is proportional ...
By JamesPa , 17 hours ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
Have you looked at the Nibe website? They list their ap...
By Lizzie , 18 hours ago
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RE: Why are ASHP installs so expensive?
A not unreasonable position and it wouldn’t be mandator...
By AndrewJ , 18 hours ago
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RE: Who's your electricity provider and what's your tariff?
@batpred When the raw material input has increased in c...
By Papahuhu , 2 days ago
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We kept ours and Heat Geek would have been in touch if ...
By Batpred , 2 days ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@ian-s I would encourage you to have a conversation ...
By Rob of York , 3 days ago
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RE: Is it the house or the equipment?
Thanks @jamespa The last hard to fix draughts in the...
By springswood , 3 days ago
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RE: Vaillant Arotherm – Using Heating
@l8again Mine is typically using 11w including the i...
By Batpred , 3 days ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
If you have a flowmeter and two temperature probes, the...
By bobflux , 3 days ago
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RE: Siting of the external sensor on a heatpump
@jamespa Absolutely. Even if the same mistake was mad...
By Batpred , 4 days ago
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