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IaAck
@iaack
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Joined: Mar 8, 2023
Last seen: Jan 30, 2026
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Topics: 0 / Replies: 59
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Reply
RE: DIY Heat Pumps.

@iancalderbank Life is full of hazards.... it's the risks you need to worry about🤔

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: DIY Heat Pumps.

@iancalderbank as R290 is based on propane (not containing fluorine) I would think that the f-gas regs wouldn't apply.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung gen 6 short cycling

@iantelescope I believe the short cycling problem would be rectified by increasing the hysteresis value for the RWT sensor. What is the current settin...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 10.5kW unit that needs a new compressor

@transparent You could well be right. Current salary for a refrigeration engineer is in the region of £40k per annum ( £20/hr.) Cost of training tools...

3 years ago
Forum
Ground Source Heat Pump (GSHPs)
Reply
RE: 10.5kW unit that needs a new compressor

@delt I liked to make a stab at this, so some of the things to consider: engineers travel time to site, say 1 hour @ 65/hr engineers travel time...

3 years ago
Forum
Ground Source Heat Pump (GSHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

Additional info on pull down end of line reistors: To eliminate the presence of reflections from the end of the cable, it must be terminated at both...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

@cathodeRay, Would I be right in thinking that your hourly COP value calculation includes periods (minutes) when the compressor is not running? Or mo...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

@ cathodeRay I could see how the instantaneous COP value could be in the order of 11.6, but I can't see how that could be the average over an hour due...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: A conundrum…

@batalto was your boiler located in the middle of your garden, or in your kitchen, utility room or loft. Your missing my point, whatever the boiler ef...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: A conundrum…

You suggested a figure of 80% for the efficiency of you oil boiler for converting the fuel to hot water, where does the other 20% of the energy goes, ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: A conundrum…

One question if I may, where was your old oil boiler located; within you home or in an outbuilding?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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