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: Jun 27, 2026
@jamespa so if i have a 1988w rad at 40c @-3.1 it will only be 509w?
@jamespa heat loss list on first post. it’s the one that says nearly 2kw, I’ve just split it into 2 rooms as we’re going to put a sliding wall betwe...
@jamespa thanks for the info but I think I must have something wrong. The heat loss for the whole house is about 7.5kw. The room is only 3.756m x 3.68...
can i ask then if i have a heat loss for a room of 1079w and a flow of 40c@-3.1c what wattage rad do i need to hit? cause at the moment im struggling ...
@jamespa what I didn’t want to do was oversize too much then end up having the HP cycling. What I have noticed is most companies I’ve contacted want t...
@jamespa I’ve had a few done most come out around 7kw so that’s probably about right, but the loss per room I’ve only got one and it’s been corrected ...
@jamespa I’m planning to try for 40c as that’s what my old installer was going to do. I will measure the rads and see where I need to upgrade. One of ...
tf heating and plumbing Visited today. They are suggesting a 2 port buffer/volumiser. Also said the rads would needs to be upgraded if needed otherwis...
the training is not happening at any pace. they have a whole room with HP's of different brands in at my local college but no one to teach it, the gas...
just wondering if the UFH is creating some back pressure and the rad locksheilds are closed down too much so when the pump kicks in its pumping agains...
now have 3 companies in line to quote that were on the Vaillant site as covering my area. think the nearest is 20 miles away.
been looking at companies local to me and two have Vaillant master tech status and one renewable partner. which is the better company?
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Samsung heat pump - data cable issue
Well that's interesting. If it needs fat cable it's be...
By JamesPa , 2 hours ago
-
RE: Rate the quality of your heat pump design and installation
I'm kind of at the end of my heat pump installation now...
By JandP , 4 hours ago
-
RE: MCS Quality Audit – Has Anyone Had One? Did It Lead to Remediation?
I got hit with an RHI audit in 2022. It was far from c...
By Abernyte , 5 hours ago
-
RE: Electricity price predictions
@papahuhu Groucho Marx had something to say about no...
By Toodles , 7 hours ago
-
Given the way radiation and convection effects don't wo...
By Majordennisbloodnok , 9 hours ago
-
-
RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@jamespa haha very true, although the engineer yesterda...
By swwils , 13 hours ago
-
RE: Vaillant Arotherm Pro vs new Plus
One of the test modes in the installer menu forces it t...
By JamesPa , 1 day ago
-
RE: What a difference a few degrees make.
Wow. Having accepted the challenge, I ran the cold tap ...
By Old_Scientist , 1 day ago
-
RE: HeatPump maintenance in Swindon area?
@vince31 have you tried using our finder:/p>
By Mars , 1 day ago
-
Looking for beta testers for a new homeowner heat pump tool
Over the past few months I've been building a brand new...
By Mars , 1 day ago
-
-
RE: Indevolt Batteries UK Support & Info Thread
It depends on how you configure it via the app. The ma...
By JamesPa , 1 day ago
-
RE: Renewables & Heat Pumps in the News
Be interesting if this results in any wider changes to ...
By Jeff , 2 days ago
SPONSORS
