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Mike H
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Mike H
@mike-h
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Reputable Member
Joined: Dec 1, 2021
Last seen: Sep 18, 2025
Profile Activity
Topics: 5 / Replies: 192
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Reply
RE: Heating engineer costs

Dave Smith who makes this insulation is very helpful and has some excellent videos. The sealant is an essential part of the process and also the speci...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low Loss Header is losing 1.5c from flow temperature

@derek-m Thanks Derek. I think we agree that the inefficiency of the buffer tank is in part due to the higher LWT required to provide the same heating...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low Loss Header is losing 1.5c from flow temperature

@derek-m In order to get reliable flow round my pipe work, I would also need bypass valves, new diverter and pump etc - hence the cost. My dilemma is ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low Loss Header is losing 1.5c from flow temperature

if the difference between the flow temperature from the heat pump and the flow temperature from the LLH to the radiators is only 1.5°, then I would ex...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump delta T too low - 2c

@derek-m Perhaps not necessarily a delta T of 5 deg C. I’ve seen @heacol state that 8 deg C delta T is most efficient. My ASHP is most efficient, alth...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung ASHP with Hive thermostat – help needed please

@lfranklin when the domestic hot water is off then it will lose temperature at a rate depending on the temperature around the cylinder and pipes. Also...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung ASHP with Hive thermostat – help needed please

@derek-m The easiest way that I found to do this was to set the weather compensation to 40 at minimum and 40 at maximum outside temperatures. That way...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung ASHP with Hive thermostat – help needed please

@lfranklin On the wired remote controller, press the cogwheel icon, once to wake it up and the second time to go to the next screen. Then select sc...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung ASHP with Hive thermostat – help needed please

@lfranklin If your hot water tank is in your loft and your loft is cold, then the noise you hear at night is probably the water in your hot water tan...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 15mm piping and the need for flow separation

@william1066 Thanks for this. I have been looking at all the formulae. Assuming a velocity of 1.0 m/s is acceptable (0.9 m/s being the recommended val...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 15mm piping and the need for flow separation

@heacol Thank you so much for your advice. That is really helpful. My understanding of heating systems has been gradually increasing since joining thi...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 15mm piping and the need for flow separation

@william1066 many thanks for your detailed reply. The current flow rate for my heat pump is around 22 litres per minute (it is a non PCM pump), but I ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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