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: Aug 12, 2026
@bontwoody Given your experience from your previous house and given op has a 8kW heat pump for possibly a 2.5- 3.5kW house which takes 18hrs to co...
Thats really helpful. The plot produced is odd and to me smacks of flow temp reduction triggered by a control not by defrost. The temperature soon r...
Good. No need to apologise, despite the fact that the principles of heating are extremely simple, the wide variety of houses and the constantly varyi...
All noted. I can see whats happening but the drop in FT appears to occur just before the start of the plot and the onset of defrost, so is not obvio...
The problem is that you need to modulate down to <1kW because thats where the temperature sits most of the time. You wont find a heat pump or a bo...
Whatever you are experiencing in terms of house temperature is not, IMHO, going away 'simply' by getting another heat pump, and is likely to get even ...
I am far from convinced this will fix the problem because there isnt much out there < about 4kW, so not that much difference. I think there is a ...
Yes, but the lowest power heat pump you will get is ~5kW, so its still going to be cycling. A boiler will be much worse. Thus getting to grips with ...
ok that makes more sense, in which case simplicity of UI is going to be key if you do change! I can recommend Vaillant for this because I have one, b...
Welcome to the forum. Some things you are saying dont make sense together One of the reasons you want to replace it is because its oversized, yet t...
The idea (and at least one similar product) has been around for a while, I even considered it for one awkward room when I did my upgrade a year ago. ...
Of that I have no doubt and apologies for any offence!
- 27 Forums
- 2,743 Topics
- 64.4 K Posts
- 1,138 Online
- 7,147 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
RE: PV and battery long payback - sense check query
@majordennisbloodnok thanks for your post - really not ...
By DavidB , 18 minutes ago
-
RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@majordennisbloodnok I have DM’d Ian with an invitation...
By Toodles , 34 minutes ago
-
RE: Indevolt Batteries UK Support & Info Thread
@dansus To achieve a full 3kW (3000W / 13A) continuous ...
By Indevolt Tech , 3 hours ago
-
Flushing system, cleaning and inhibitor
Hi all, I have some questions about flushing my syste...
By Old_Scientist , 4 hours ago
-
I don't notice mine defrosting, and most of the time Im...
By JamesPa , 16 hours ago
-
RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
Kind of you, @calumm, but it was @f1p who did the heavy...
By Majordennisbloodnok , 1 day ago
-
RE: Electricity price predictions
2. As EV ownershp increases it'll certainly increase de...
By EtchedPixels , 2 days ago
-
I meant to say I cannot register my kit at Energyplus… ...
By Batpred , 2 days ago
-
RE: HomeTherma Is Live: A New Home-Energy Platform Built Around the Homeowner
Signed up!
By bobflux , 3 days ago
-
RE: Has anyone seen this problem before? Huge anticycling times
Oh dear. Glad it was replaced. I have been mighty imp...
By JamesPa , 4 days ago
-
RE: Can I start an argument about buffer tanks please? 🙂
Dont, just adjust the LSVs to get different temperature...
By JamesPa , 5 days ago



