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	RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW By JamesPa, 1 week ago Forum Air Source Heat Pumps (ASHPs)
	If you dont mind can I ask the reasoning - only about the S vs Y bit, the rest of what you say I fully understand. I should preface this by saying Im neither a plumber nor a heat pump installer, just...
	RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW By ASHP-BOBBA, 1 week ago Forum Air Source Heat Pumps (ASHPs)
	@editor Mars, In relation to this customers issue, I would be interested if the next time you do a podcast covering issues simular you could ask the experts what they think is best S plan or Y plan, ...
	RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW By ASHP-BOBBA, 1 week ago Forum Air Source Heat Pumps (ASHPs)
	@jamespa Hi James, I don't know but I have 2 more in my area to look at next week after Easter. There seems to be this issue sometimes. CB, I think perhaps ask them kindly what they think about desig...
	RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW By JamesPa, 1 week ago Forum Air Source Heat Pumps (ASHPs)
	... presumably because the customer (very sensibly) said that they didn't want a buffer! Why do heat pump installers persist in making things complicated?
	RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW By ASHP-BOBBA, 1 week ago Forum Air Source Heat Pumps (ASHPs)
	Attachment : Screenshot 2025-04-17 at 15.29.56 copy.png
	RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW By ASHP-BOBBA, 1 week ago Forum Air Source Heat Pumps (ASHPs)
	Attachment : Screenshot 2025-04-17 at 14.58.14.png
	RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW By ASHP-BOBBA, 1 week ago Forum Air Source Heat Pumps (ASHPs)
	So if I understand it correct while in DHW mode, the main ASHP pump (1) has to go through the DHW circuit in the cylinder and then pull through the non operating heating return pump (this is not corre...
	RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW By CBrenewable, 1 week ago Forum Air Source Heat Pumps (ASHPs)
	@ashp-bobba - yes that all looks correct. Pump 1 is on the flow and Pump 2 is on the return.
	RE: Hitachi Yutaki SCombi Heat Pump - Thermal Off's By JamesPa, 1 week ago Forum Air Source Heat Pumps (ASHPs)
	I agree. The fundamental is that the house determines the heat loss and the compressor determines the minimum output. Changing the transport mechanism between the two may make a small difference, but...
	RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW By ASHP-BOBBA, 1 week ago Forum Air Source Heat Pumps (ASHPs)
	To add red circuit is DHW and blue is heating