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	RE: Heat Pump Installers: Competence, Illusion and the Hard Truth Homeowners Must Face By GrahamF, 3 weeks ago Forum Government Schemes, Regulations, Planning & Organisations
	@ashp-bobba wow that is such a professional approach. I am really impressed!
	RE: Heat loss calculations and how they work in conjunction with heat pump sizing By GrahamF, 3 weeks ago Forum Safety, Regulations, Tools, Plumbing & DIY Installations
	Yes, I agree with your points. However, the risks are different in nature. If you oversize a heat pump, then the risk is that it is less efficient. This has no impact at all on the installer and ma...
	RE: Heat loss calculations and how they work in conjunction with heat pump sizing By JamesPa, 3 weeks ago Forum Safety, Regulations, Tools, Plumbing & DIY Installations
	Sure, its a 200sq m 1930s house with (originally) solid walls, a couple of modest modern extensions and miscellaneous fabric upgrades such as partial IWI and 300mm of loft insulation. Floors are stil...
	RE: Heat loss calculations and how they work in conjunction with heat pump sizing By GrahamF, 3 weeks ago Forum Safety, Regulations, Tools, Plumbing & DIY Installations
	@batpred I suspect there is probably a heat pump owner maturity curve. People start by trying to get the last 5% efficiency out of the system. Then, they remember that there are more important thin...
	RE: Heat loss calculations and how they work in conjunction with heat pump sizing By GrahamF, 3 weeks ago Forum Safety, Regulations, Tools, Plumbing & DIY Installations
	@jamespa I am really impressed that your heat loss estimate was so accurate. May I ask what kind of house you live in? In winter, when we had the gas heating, we used to go upstairs to a cold bedroom...
	RE: Heat loss calculations and how they work in conjunction with heat pump sizing By AgentGeorge, 3 weeks ago Forum Safety, Regulations, Tools, Plumbing & DIY Installations
	@batpred I had the first heat loss calculation done before the Conservatory was removed, the surveyor marked the room as unheated. I correctly kept the french doors between the dinning room and the co...
	RE: PV Panels on roof in Conservation Area By Morgan, 3 weeks ago Forum Solar Photovoltaic (PV)
	I also live in a conservation area in Derbyshire. I simply emailed the planning department to ask the question. The reply was unequivocal; I did NOT require planning permission. That, however, won't h...
	RE: Heat loss calculations and how they work in conjunction with heat pump sizing By JamesPa, 3 weeks ago Forum Safety, Regulations, Tools, Plumbing & DIY Installations
	In 3 years on this forum I have seen very, very few cases indeed of under sizing of the type you are describing. In contrast there have been dozens of cases of gross oversizing of the outdoor...
	RE: Isolating the system for a planned power cut By Batpred, 3 weeks ago Forum Solar Photovoltaic (PV)
	I really appreciate you doing this! Solis initially provided a leaflet covering many markets mentioning the RCD sensitivity expected and also how they expected the sizing of the MCBs to be done. To be...
	RE: Renewables & Heat Pumps in the News By Lucia, 3 weeks ago Forum Well & Truly Off The Grid
	@batpred And RE seems to be pushing to reign in the commercial factors soon. But in that larger market is the same level of transparency possible? Yeah... we won't mention 'missing data'... D...
	RE: Heat loss calculations and how they work in conjunction with heat pump sizing By Batpred, 3 weeks ago Forum Safety, Regulations, Tools, Plumbing & DIY Installations
	Great, you did the right thing! I am not clear if you replaced the conservatory before the first before heat loss calculation? What I cannot understand is how my friends could have heat loss calculat...