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HughF
@hughf
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Noble Member
Joined: May 2, 2022
Last seen: May 5, 2025
Profile Activity
Topics: 6 / Replies: 482
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RE: ASHP at cold temperatures

@huwsy you should have looked at daikin for this system, their vrf technology is better suited to running different rooms at different temperatures.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 17kw Grant Aerona heat pump not performing

Adam Chapman of heatgeek is based around Guildford, he should be able to advise on any local engineers who are competent.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Books about heat pumps

using the look inside feature, that one appears to be GH’s first book…

2 years ago
Forum
Well & Truly Off The Grid
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RE: Vaillant 10kw ASHP installation. Installer issues

Don’t pay them the balance, run them off the job, find someone else to fix this mess. They seem like proper cowboys these ones. You could find any...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: MCS Certified installer problem

Another option is to pay for @heacol to consult on the failings of this install, get him to write a fault report and get the installers to act on his ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: MCS Certified installer problem

@parmstar you’ll end up having to pay for a decent gas boiler install and then claim the costs back through the small claims court, my prediction… not...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

If you want to improve the efficiency you should remove any hydraulic separation between the ashp and the heating circuit, and make sure that all exte...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: MCS Certified installer problem

If the rads are oversized for the heat loss at the design temp of 50, and you’re running it at 55 and the target room temperature hasn’t been met then...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: MCS Certified installer problem

@parmstar I was thinking the backup immersion inside the ecodan (if they have them, I thought they did) You’re running it at 55 now then and the rad...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mitsubishi Ecodan not good enough ?

Mitsubishi won’t help you…. What was the design flow temperature for this retrofit? That’s the key. And yes, it will run continuously when it’s -6 o...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: MCS Certified installer problem

@oswiu 6.56kW continuous house usage for 14 days straight, at the backstop rate… 3kW into the heat pump and a 3kW backup immersion running too? Or...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: MCS Certified installer problem

@parmstar that’s the room temperature. I need to know what flow temperature they designed for. This is the temperature of the water that flows round t...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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