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Last seen: Oct 4, 2026
@ian-s One interesting difference between your two quotes is the room temperatures assumed. HG assumes 21C throughout and DW have used a variety of...
Posted by: @grahamf If you are considering phasing the project, then I would investigate the VAT implications. A heat pump installation is zero...
Posted by: @springswood I'm working on passive ways of reducing indoor temperatures. Good quality black out blinds are very effective at reduc...
@springswood We have two Daikin single split A2A systems, 3.5kW in the living room and 2.5kW in the main bedroom. This is in a 4-bed detached, 1970s...
Volumisers and Buffers My updated and approved (by my wife!) radiator plan has a total radiator volume of 128.8 litres plus roughly 15-18 litres for...
Post by: @bash How it worked for me is that when I had all radiators fully open, that appeared to be on part of a long run of 15mm pipework, at lea...
Posted by: @jamespa The regulations are here Regulation 9(2) b is the key one Thanks for the pointer to the regulations, in particular: 9(2)...
@bash @jamespa Thanks both for the practical advice. Just to check I'm understanding this right. The game plan would be as follows: Turn the fl...
@bash Thanks, its good to hear about your experience. My concern with the pipework is along very similar lines. There is no way of knowing the actua...
Posted by @jamespa It would be interesting at some point to develop a list and estimates for all of them. Below I've considered the impact of t...
Posted by: @jamespa At this point its probably worth pointing out, for future reference, that degree days are not exactly the same as an offset ave...
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