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Last seen: May 18, 2026
Subsequent to writing the above one more niggle occurred to me. Whilst you set up the upstairs you need to ensure that the heat pump isnt disabled be...
On the contrary you are asking all the right questions and providing well thought through answers. Its going to be difficult to give a 'prescription'...
@green_fox Excellent information and pictures and wow you have got a lot of kit. A couple of observations and then (sorry) a couple more question...
OK so all you actually need is a call for heat on/off, temperature measurement and remote access. Thus not necessarily a heat pump or even a heating ...
Can you tell us what the weather compensation settings are please and also is there a buffer tank/LLH or (separate question) a volumiser. Have you go...
@mairia Firstly its good to heat that cancelling setback improved things most of the time. Very cold weather is of course the strongest test. Ye...
@newhouse87 I have changed the title of this thread to specify the make. In most cases the only turnkey app for heat pump remote control that wont al...
OK so you have read the introduction. As @majordennisbloodnok said this takes time. You have come to this at a great period for adjusting things, bu...
So in simple terms triVAI is designed for a hybrid system, ie one combining a heat pump and another source (usually a boiler). If you haven't got a h...
@green_fox If you are new to heat pumps can I suggest you read this introduction. You need to forget almost everything you thought you knew about r...
You are doing well in January. Dec COP with my Vaillant was 4.2 which is also a typical SCOP for me. Jan so far 3.2. I suspect the fact I run in 'l...
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RE: Loud noises in the night - and one for the toolbox?
Brilliant bit of lateral thinking, and a useful one to ...
By Mars , 29 minutes ago
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RE: Setback savings - fact or fiction?
Yes, also the higher OAT end is possibly a smidge high ...
By RobS , 36 minutes ago
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RE: UK warm homes plan - how can it be delivered?
@bobflux My view is that regulation for consumer pro...
By Batpred , 3 hours ago
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Hi Mars, I've sent you a request to connect me with a...
By sttpd1917 , 4 hours ago
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RE: Sizing an ASHP; Heat loss and kW
Annual consumption is almost certainly better than an E...
By JamesPa , 8 hours ago
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Grant Aerona R290 (15.5kW) - How is DHW Target Temp calculated?
Hello all, We have just had a Grant Aerona R290 insta...
By TaffontheTaff , 9 hours ago
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RE: Advice on Vaillant Sensocomfort
The latest Vaillant announcement I saw said that they w...
By JamesPa , 13 hours ago
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RE: Debugging my legionella immersion heater
I notice this (66 is rather hot) with my legionella cyc...
By JamesPa , 1 day ago
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RE: DIY Heat Pump Installations: Navigating Legal and Regulatory Hurdles
@transparent I thought you would spot that wind turbine...
By Batpred , 1 day ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@swwils there is no logic to oversizing a heat pump. It...
By AgentGeorge , 2 days ago
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RE: Vaillant Sensocomfort Time
Thank youy for the pointer. I think I have managed to ...
By ispookie666 , 2 days ago
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RE: Forum updates, announcements & issues
I have been doing a lot of work on the site lately and ...
By Mars , 2 days ago
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@majordennisbloodnok good advice, thanks for that.
By David999 , 2 days ago
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RE: My Grant R290 9kW Heat Pump Installation
I am following this thread with great interest and than...
By TaffontheTaff , 2 days ago



