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: Mar 13, 2026
Yeah, the 20.8C holds in the hall. Currently, the hall is at 20.8C, the bathroom is 24C (but probs cos people have been using it, and its a small room...
This is the vision I bought into when I signed the contract for the heat pump.Instead it's the exact opposite, and I'm paying a premium to be colder, ...
The rear extension (living room/diner/kitchen) has a lot of glass, plus a 'roof lantern', so it gets cold in the winter, and VERY hot in the summer. S...
@jamespa I was told by the octopus engineer to set the target temp to 21c, and it's not getting to 21. It's been "warming up" since midday and still n...
@jamespa Alright, I'll try to balance the living radiator myself tomorrow. Thanks all for the tips. Hopefully that will help.Any idea why the hallway ...
@andrewj Thanks for the info.I was told by the Octopus people that the primary pod should be in the part of the house with the most consistent temps. ...
@l2jad I had a call with someone from MCS last week who called to check in on the status of the install. Told me to call them if I wasn't happy with t...
So I got an email from Octopus today saying they added a software update to my heat pump which should reduce the noise. The Octopus engineer has told ...
@editor Another heat pump engineer/installer from Octopus came by. He said, the reason for the use of a 4 port buffer is to get "hydraulic seperation"...
@l2jad Glad to hear it. Hope it'll be sorted for us all. BTW, did they install a 4 port buffer or a 2 port volumizer for your system?From an earlier c...
@swwils Done it already. Sent the same files I shared in my original post.Also just sent a bit of sternly worded letter saying I'm sick of all the dis...
@l2jad So sorry to hear your terrible situation. I did a fair bit of research before installing mine. I am very environmentally minded and stupidly di...
- 26 Forums
- 2,639 Topics
- 61.5 K Posts
- 1,067 Online
- 7,035 Members
Join Us!
Latest Posts
-
RE: Daikin Altherma 3 with Fan Coils in Puglia (Italy)… Sanity Check on System Operation
Hi Mars,Thank you so much for your response,I really ap...
By Simon_JM , 3 hours ago
-
RE: ASHP Capacity loss with aging
This is a good question. The short answer IMO is yes, c...
By Mars , 9 hours ago
-
RE: Loud noises in the night - and one for the toolbox?
Brilliant bit of lateral thinking, and a useful one to ...
By Mars , 11 hours ago
-
RE: Setback savings - fact or fiction?
Yes, also the higher OAT end is possibly a smidge high ...
By RobS , 11 hours ago
-
RE: UK warm homes plan - how can it be delivered?
@bobflux My view is that regulation for consumer pro...
By Batpred , 14 hours ago
-
Hi Mars, I've sent you a request to connect me with a...
By sttpd1917 , 14 hours ago
-
RE: Sizing an ASHP; Heat loss and kW
Annual consumption is almost certainly better than an E...
By JamesPa , 18 hours ago
-
Grant Aerona R290 (15.5kW) - How is DHW Target Temp calculated?
Hello all, We have just had a Grant Aerona R290 insta...
By TaffontheTaff , 20 hours ago
-
RE: Advice on Vaillant Sensocomfort
The latest Vaillant announcement I saw said that they w...
By JamesPa , 1 day ago
-
RE: Debugging my legionella immersion heater
I notice this (66 is rather hot) with my legionella cyc...
By JamesPa , 2 days ago
-
RE: DIY Heat Pump Installations: Navigating Legal and Regulatory Hurdles
@transparent I thought you would spot that wind turbine...
By Batpred , 2 days ago
-
RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@swwils there is no logic to oversizing a heat pump. It...
By AgentGeorge , 2 days ago
-
RE: Vaillant Sensocomfort Time
Thank youy for the pointer. I think I have managed to ...
By ispookie666 , 3 days ago
-
RE: Forum updates, announcements & issues
I have been doing a lot of work on the site lately and ...
By Mars , 3 days ago



