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Derek M
@derek-m
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Illustrious Member
Joined: Mar 4, 2021
Last seen: Sep 19, 2024
Profile Activity
Topics: 7 / Replies: 4403
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Reply
RE: Ecodan - best base for 6kW external unit

I have found that 'something for the weekend' doesn't actually normally stop 'vibration'. 😋

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Electricity price predictions

@majordennisbloodnok Or alternatively they could just tell consumers what offset has been applied to their meter. The consumer would then be able to...

3 years ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
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RE: Ecodan - optimal external installation?

Probably both. The heat pump requires a good flow of 'fresh' air through the evaporator coils, which are located at the rear and one side of the uni...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Creative trials on Night-time Setbacks to @ faster recovery, improved comfort and even greater energy reductions.

@cathoderay I would certainly agree that the heat pump operation is causing an increase in defrost cycles and also a reduction in efficiency.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Creative trials on Night-time Setbacks to @ faster recovery, improved comfort and even greater energy reductions.

@cathoderay Are the OAT values from the heat pump sensor?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How Do Compressors and Frequency Affect Heat Pump Efficiency?

@william1066 It would be useful to include the leaving water temperature, indoor air temperature and power consumption on the chart.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan - optimal external installation?

1 black bar (Level 2 Quiet Mode) is the quietest setting, and that is the one we use all the time, except when it is forecast to remain below zero all...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 10kW versus Samsung 12kW - sizing dilemma with ECO4 installation

To save you the trouble of sending a DM, I don't know why Ian made that statement. I have never actually carried out a heat loss calculation, though...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Defrost Cycles - How Common Are They?

I fully agree. GSHP's would probably be better suited for use in the UK.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@toodles So applying the correction factors which you have established, the LWT is 37C and the RWT is 34.8C, giving a DT of 2.2C in the primary circ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Defrost Cycles - How Common Are They?

When operating in normal mode a ASHP absorbs thermal energy from the outside air and uses this thermal energy to heat the water being used to transfer...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Policies

Two very good questions. When you find the answers please let us know. 🙄 As far as I am aware MCS set standards, some of which may be questi...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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