Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Last seen: Sep 18, 2026
I have seen it said that towel radiators should always be fully closed because they have very little flow resistance so are pretty much a 'short circu...
No need apologise, anything you can tell us about thermo off would be welcome. Personally I would switch it off and use features accessible from the ...
For clarity its not my heat pump. The heat pump (and house) belongs to @trebor12345 My only role is to tray to assist!
Fair enough. There seem to be ways to achieve the same without flipping dip switches which personally I would have preferred because they are more ac...
I have wondered the same. It seems a Hitachi engineer set up the thermal off and it's hysteresis to prevent short cycling which was apparently occurr...
Apart from the oversized heat pump and the solar gain, do you have any other problems in terms of comfort or running cost? Im guessing it cycles a fa...
Simon thanks. If you have the time perhaps you could look at the past 2 pages of posts. Essentially OP is operating his heat pump on a fixed flow ...
Air release valves dont always work! You are gonna have to do some experiments if you want to know more, like closing loops down and seeing if that ...
Fair enough. I recommend quizzing him to get your money's worth!
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Why are ASHP installs so expensive?
While heat loss is a very important (and fascinating) s...
By springswood , 1 hour ago
-
RE: Heat Pump deployment statistics: June 2026
To my eyes, sat behind all of this is a basic policy ma...
By Temperature_Gradient , 13 hours ago
-
Thank you @majordennisbloodnok – that means a lot, part...
By Mars , 17 hours ago
-
We’ve just passed 20 million forum views! 🎉
It's official. The Renewable Heating Hub forums have of...
By Mars , 17 hours ago
-
RE: Missing flow temperature in Heat Geek proposal
That calculation is reasonable, output is proportional ...
By JamesPa , 20 hours ago
-
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 , 21 hours ago
-
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
-
We kept ours and Heat Geek would have been in touch if ...
By Batpred , 3 days ago
-
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
-
RE: Is it the house or the equipment?
Thanks @jamespa The last hard to fix draughts in the...
By springswood , 3 days ago
-
RE: Vaillant Arotherm – Using Heating
@l8again Mine is typically using 11w including the i...
By Batpred , 3 days ago
-
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
-
RE: Siting of the external sensor on a heatpump
@jamespa Absolutely. Even if the same mistake was mad...
By Batpred , 4 days ago
-
SPONSORS
