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Derek M
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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: 4405
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Reply
RE: Heat pump installation quotations

@heacol Could you please explain why MCS compliance appears to be so expensive, particularly considering how ineffective it appears to be in some c...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump installation quotations

You can have as many standards and regulations as you like, but they are of little use if no one is enforcing them, and unscrupulous vendors are allow...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Considering a heat pump for a '50s house

Hi @heacol It would appear that you would require two of these units at £400 each. Is that correct?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 14kW Midea ASHP in an old leaky building

Hi @cathoderay One thing that you could do quite easily is to install a reflector on the wall behind the radiator, and all the other radiators for t...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Valiant ASHP system in NE Scotland

I will ask the question if I can get him to reply. At the moment he seems to be doing his best to lose my vote.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 14kW Midea ASHP in an old leaky building

Hi @mjr Having read through quite a number of manufacturers manuals, it would appear that starting and stopping more than 6 times in a 1 hour period...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 14kW Midea ASHP in an old leaky building

Hi @cathoderay Looking at the spreadsheet that I provided you will notice that some of the cells in the top row are highlighted in green, these are ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Valiant ASHP system in NE Scotland

Hi @transparent So if network costs have gone up 39%, why have standing charges gone up almost 100%? I would be interested to see a breakdown of h...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Valiant ASHP system in NE Scotland

Having worked for many years in the power generation industry, I fully agree that we should be doing as much as possible to reduce demand, particularl...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 14kW Midea ASHP in an old leaky building

Hi @cathoderay It is now obvious that the weather compensation slope needs to be adjusted to accommodate the higher LWT that is necessary because of...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 14kW Midea ASHP in an old leaky building

From what I gather from various sources, having a buffer tank or low loss header can have a detrimental effect on system operation and efficiency. If ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Valiant ASHP system in NE Scotland

Hi@transparent Thanks for the information, I must admit that I have been highlighting, for some time on the forum, that the rush to renewable's was...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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