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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 17, 2025
Profile Activity
Topics: 17 / Replies: 2865
AllTopicsReplies
Reply
RE: Is this a bad installation and is there something wrong with my Samsung heat pump?

I profoundly disagree, the MCS stamp of approval is worth a fortune. Unfortunately the people to whom it is worth a fortune are installers, not custo...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Placement of Samsung R290 ASHP

New advice from Vaillant is consistent with their own documentation 😀 I can see an argument for there being a gap above an LPG cylinder. T...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Placement of Samsung R290 ASHP

Who is telling you that under a window is unacceptable and why? I am concerned because I am being told that underneath a window (opening or not) is o...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Placement of Samsung R290 ASHP

They are large because a) they have to move a lot of air and b) they need sound insulation. That is probably not going to change a lot! I have also...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Placement of Samsung R290 ASHP

Propane (R290) sinks, under a window is allowed so far as I am aware.

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?

At least they admit they may be wrong! My understanding is that they are concentrating on a specific subset of properties with a loss of 6 (8?)kW o...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?

I find increasingly staggering that the MCS rules don't require that the heat loss estimated by GIGO spreadsheet be compared with actual consumption, ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?

To give yourself more confidence, look back over the past 3 years and work out the rolling average consumption over (eg) 3 hrs, 6hrs and 24hrs, for ea...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?

No your demand cant be 14.3kW. My annual gas usage is 18-20MWh and my measured consumption 7.5, max 8kW. Sadly this appears to be 'situation normal...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?

Most mcs contractors I have encountered refuse to take into account measured data, but there are exceptions. Oversized heat pumps can be inefficient....

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?

Unfortunately sizing heat pumps for a retrofit is very far from a replicable process because the engineer must make assumptions about the fabric which...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?

Mitsubishi 11.2kW is within the pd size limits. Check LG and Panasonic also. Re nobody can get pp, is this for a heat pump or more generally. Yo...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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