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SUNandAIR
SUNandAIR
@sunandair
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Noble Member
Joined: Dec 30, 2022
Last seen: Jul 23, 2025
Profile Activity
Topics: 5 / Replies: 496
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RE: Creative trials on Night-time Setbacks to @ faster recovery, improved comfort and even greater energy reductions.

In summary the purpose of these trials have been to see if there are any energy savings in having an automated setback over a 7 hour period of night t...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan ASHP - How to optimise my set up?

Where is your circulator pump located in the circuit? Is it positioned on the Primary Flow or the Primary Return? Do you have a Mitsubishi pre plumbed...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan - optimal external installation?

hi SKD, What model are you referring to please? The R32 only refers to the refrigerant. I’ve posted here the data sheet for the current r32 models a...

1 year 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.

Definition of setback. we have tried different set back temperatures to see what fits our Low mass building. In other words our house warms up quick...

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

Hi Ray Looking at your chart you seem to have a stark increase in energy use for only a small drop in outside ambient. IE dropping from 10c to 8c ap...

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

@cathoderay Thanks for your observations. I need to correct a chart comment I made on my last post. The pink coloured crosses are December data not Ja...

1 year 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.

Over 50 trials of setbacks vs continuous operation. Here is a scatter graph of this winter operation of our Ecodan 8.5 to date. The setup is a Ratia...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Slash Your Heat Pump Bills Overnight

Sorry, I have to say this post simply serves to muddy the waters. I agree that the time of use tariffs may produce savings as a tactic. But in no w...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Secondary pump speed - how much slower should it be?

James / Derek. Over the last year or more there has been a lot of debate and speculation about the optimum flow rate for the Ecodan range. Some people...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan ASHP - How to optimise my set up?

@jaket we have decided a bit of cycling (but not too much) when it’s 10 or 12c is better at achieving a high CoP and minimise KWh consumption. The q...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump efficiency v Outside Air Temperature

thanks for your response. It’s not easy to compare like for like installations since anything can be different between personal choices and preferred ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump efficiency v Outside Air Temperature

Very interesting. @mike-patrick Interested in how big your house is since output is bigger than us in our 180 sq mtr house. Also do you have low los...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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