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 16, 2026
@papahuhu I understand that quite common for them not to make clear the minimum output. I think 30-35% of the badged output is about average
@papahuhu Well its certainly not helping! What is its minimum output at various flow temps. That should give you a clue. Oversizing of heat pumps is r...
@papahuhu Its really tricky to get these things remedied. Good luck. For interest how big is your heat pump and your house?
@toodles Glad you got your money back Toodles. Unfortunately I didnt buy my wind farm shares with a CC 🤣
@papahuhu Hope you get somewhere with them. Sounds like you know what the problem is. Did you pay by credit card? If you cant get anywhere, it might...
@papahuhu OK, filled cavity and 300mm insulation would sound about right. I think you are correct and they missed the fact that the attic insulation i...
@papahuhu Im struggling to understand why they took a bigger radiator out? What type of construction is your house? when was it built? At 28 W/m2 Im g...
@papahuhu That may be telling. Measure your radiators. Take a photo and measure the room its in. Let me know roughly its date of construction and we s...
@papahuhu I would concentrate on the upstairs radiators. If the downstairs rooms are warm then there is enough heat when the emitters are working prop...
@papahuhu I think the rear sensor is probably a bit of a wild goose chase, unless its faulty.
@papahuhu OK. what about the lockshield valves, have you tried opening those with the TRVs set to max? Are the upstairs radiators a similar temperatur...
@papahuhu I would definitely check the upstairs radiators. If they were locked down too much, that would effect the volume of the system and might acc...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 10 hours ago
-
@kilgorexv, I actually think doing your own calculation...
By Mars , 10 hours ago
-
RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 1 day ago
-
RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 2 days ago
-
RE: Who's your electricity provider and what's your tariff?
@chandykris Swings and Roundabouts, you win some…. ...
By Toodles , 2 days ago
-
@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 2 days ago
-
RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 2 days ago
-
RE: Do I add Air Con or MVHR to existing A2W ASHP?
There is scope for product development here. I for one...
By JamesPa , 2 days ago
-
RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 3 days ago
-
RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
By Mars , 5 days ago
-
RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
First time poster here but I can share my experience as...
By SCH , 6 days ago
-
RE: Is it the house or the equipment?
...which, I've found out, is pretty much impossible to ...
By Majordennisbloodnok , 6 days ago
SPONSORS
