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	RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus By Judith, 2 weeks ago Forum Air Source Heat Pumps (ASHPs)
	The air changes per hour in the leakage values is the most guessed parameter. Assessors have guidelines based on the house build date. If you have an actual measurement then the best designers can use...
	RE: DHW Efficiency By Mars, 2 weeks ago Forum Domestic Hot Water & Cylinders
	@transparent, that’s a bang on suggestion. 45C DHW tends to be the sweet efficiency spot for most heat pumps.
	RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus By Mars, 2 weeks ago Forum Air Source Heat Pumps (ASHPs)
	I wouldn’t go as far as saying every single heat loss in the UK is not fit for purpose because there are some excellent designers and engineers out there doing very thorough work, but I do take your b...
	RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus By JamesPa, 2 weeks ago Forum Air Source Heat Pumps (ASHPs)
	Precisely my view and why I use the term 'sense check'. If two different methods come out sufficiently similar one can be moderately confident in the figures. My strong suspicion is that the whole ...
	RE: RDSAP10 effect on existing heat pump EPC rating? By Mike Patrick, 2 weeks ago Forum Government Schemes, Regulations, Planning & Organisations
	@judith This is very interesting. I've located and printed out Michael De Podesta's latest "A" rated EPC to compare it with my own "D" rated one. Both are done to the RdSAP standard. There appear to b...
	RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus By GrahamF, 2 weeks ago Forum Air Source Heat Pumps (ASHPs)
	@jamespa I agree that people should use measurements of the performance of the existing system as input to their heat loss estimate. It makes sense to compare the answers from different estimating me...
	RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus By jords, 2 weeks ago Forum Air Source Heat Pumps (ASHPs)
	@temperature_gradient I didn’t ask that. I assumed they were using the correct nomenclature. The surveyor told me and then I asked for clarification from the sales guy and they said the buffer was req...
	RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus By Temperature_Gradient, 2 weeks ago Forum Air Source Heat Pumps (ASHPs)
	Did they confirm it was being installed as an actual 4 connection buffer tank or as a 2 connection volumiser tank? I had an Octopus survey, the surveyor said I'd need a buffer but when I asked whether...
	RE: Daikin Octopus installation update - I saw my first defrost. 😍😂 By Jancold, 2 weeks ago Forum Air Source Heat Pumps (ASHPs)
	@radwhisperer Thanks but that is definitely not a mixer valve as my water temp is low and there is no feed to hot water just the base of the DHW cylinder and a pressure dump valve. But I do suspect th...
	RE: Battery disconnected By Eliuccio, 2 weeks ago Forum Energy Storage
	@transparent Please! 😊
	RE: Battery disconnected By Transparent, 2 weeks ago Forum Energy Storage
	Can I take the evening off, and return to the Growatt stuff tomorrow? 😉
	RE: Battery disconnected By Eliuccio, 2 weeks ago Forum Energy Storage
	@transparent Thanks very much. I have shared the first detailed response with the electrician who did the jobs (fusebox and charger). The charger is indeed a Ohme pro. Here a couple of pics I took of ...