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Last seen: Apr 23, 2026
just trying to roughly get an idea what price an install should be if the following has already been done. 1) upgraded some 15mm copper runs to 22mm...
@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.
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