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Last seen: Aug 31, 2026
@chansug Sorry I misread and mistyped! 10mm copper pipe can transmit about 1.15 kW of heat with a delta T of 5C so that would place a limit on each ra...
@chansug which room has the 15mm pipework, what size is it?
@chansug Good advice above. 300mm is considered acceptable loft insulation these days 🙂 The fact that some of the quotes havent specified the flow...
@chansug Welcome to the forum. Could you specify what flow temperature and design OAT the three quotations are given for? 🙂 Also a description o...
@johnnyb Well that all sounds like progress. I’m guessing that the COP figures are calculated from the internal sensors on the unit so should be vie...
“Think of it as a short section of single carriageway road on what is otherwise a dual carriageway. It's an impediment but much better than a lot of s...
@rhh2348 I just mean that from the 22mm copper or plastic pipe spine, each radiator have 15mm plastic down to it. I use John Guest plastic pipe but...
@rhh2348 I find this an interesting question as I did a similar thing after reading John Cantors site. I have 28mm to my 5kW heat pump which then r...
@alfapat the flow temperatures in and out of the buffer tank aren’t really something you can do anything about. They just indicate how much efficiency...
@alfapat There is no such thing as a dumb question, just a dumb answer 🙂
@alfapat I think modern TRVs can be fitted on either side. The lock shield will restrict flow whichever side it is sited
@alfapat Remember Pat, as the outside temperature varies, so does your flow temperature. If you are not getting to room temperature today when its war...
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