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	RE: Is a Valliant Inline 6kW heater a BUS buster? By JamesPa, 20 hours ago Forum Air Source Heat Pumps (ASHPs)
	It sounds like you are well organised. You want to aim for open loop operation on weather compensation only, no buffer, LLH or PHE between emitters and heat pump (you may need a mixer for the UFH unt...
	RE: Is a Valliant Inline 6kW heater a BUS buster? By GuydeB, 22 hours ago Forum Air Source Heat Pumps (ASHPs)
	Thanks @iaack and @jamespa for your further thoughts. Your advice has been invaluable. I have a well respected installer ready to install the 12kW Valliant + inline heater and I will discuss all your ...
	RE: Is a Valliant Inline 6kW heater a BUS buster? By JamesPa, 1 day ago Forum Air Source Heat Pumps (ASHPs)
	Ok so that's 35MWh and 32MWh respectively, assuming 10kWh/l, indicative of 11-17kW assuming the boiler is 100% efficient (which it likely isn't) and that the whole house is heated (or at least warm). ...
	RE: Is a Valliant Inline 6kW heater a BUS buster? By IaAck, 1 day ago Forum Air Source Heat Pumps (ASHPs)
	@guydeb I take it you've not explored the option of using a single phase to 3 phase converter to run a 18kW 3-phase heat pump. Instead of £44k on a grid supply you could purchase an inverter for consi...
	RE: Is a Valliant Inline 6kW heater a BUS buster? By GuydeB, 1 day ago Forum Air Source Heat Pumps (ASHPs)
	@jamespa thanks. For a fossil fuel comparison we spent approx £2,500 (av. 71p per litre) - £2,800 (av. 85p per litre) per year on oil (2023 and 2022 figures). We both work from home....
	RE: Is a Valliant Inline 6kW heater a BUS buster? By JamesPa, 1 day ago Forum Air Source Heat Pumps (ASHPs)
	@guydeb It is going to be high loss. I have heard that the commonly assumed U values for stone walls is way to high, and the air changes is also often too high, so it still might be less than you th...
	RE: Is a Valliant Inline 6kW heater a BUS buster? By GuydeB, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	Wow @jamespa thanks so much for this - I am lucky enough (in our very hot summers!) to live in Somerset in an 1840s vicarage made of blue lias stone (external walls c. 450-500mm). It's approx 300m2, w...
	RE: Is a Valliant Inline 6kW heater a BUS buster? By JamesPa, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	This has come up before; a close neighbour of mine did something similar and claimed the BUS grant, but of course that doesn't mean it is OK. I would say this is debatable, which means that until the ...
	Is a Valliant Inline 6kW heater a BUS buster? By GuydeB, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	Like many newbies desperately trying to ASHP an old house from oil fired, I have been down many rabbit holes - in brief, three phase not possible (£44K quote from National Grid), 18kW heat loss (Good ...
	RE: Daikin - octopus -cooling By TechnoGeek, 3 days ago Forum Air Source Heat Pumps (ASHPs)
	@pie_eater I have been thinking of adding cooling to my system over the last 12 months+. I am not too keen on the condensation issue as I have had to fix a lot of condensation issues in the house in t...
	RE: BUS Grant: removal of all other fossil fuel heat sources By Rikiarn, 4 days ago Forum Air Source Heat Pumps (ASHPs)
	Hi all, thanks for your help. The installer has confirmed that we don’t need to remove the gas fireplace to get the grant so happy with the resolution. Still think is not entirely clear from the legis...
	RE: Daikin - octopus -cooling By downfield, 4 days ago Forum Air Source Heat Pumps (ASHPs)
	@pie_eater Try asking the Perplexity AI engine how to turn on cooling on your specific model. It's available through your web browser or as a free iOS app. Or just ask Daikin. We changed three rads ...