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Persephone
@persephone
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Joined: Dec 14, 2023
Last seen: Jul 21, 2025
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Topics: 2 / Replies: 64
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Reply
RE: Air Source Heat Pump Policies – MCS Planning Standards

I am not talking about the 4NR difference, I am talking about the level of NR difference. For instance the 4dB difference of 40dB and 44dB in the 63Hz...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Air Source Heat Pump Policies – MCS Planning Standards

Does this mean that an MCS certified installer is also 'free' to provide fabricated documents? (just for clarification, I am not talking about WSP ass...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Air Source Heat Pump Policies – MCS Planning Standards

The installation is against Design and Visual impact policies and set-back zone policies, specifically because the ASHP faces a public Parkland. No le...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Air Source Heat Pump Policies – MCS Planning Standards

What I am trying to say is that NR23 in my neighbour's house which is a new building with good insulation, has nothing to do with the NR in my house. ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air Source Heat Pump Policies – MCS Planning Standards

NR has a curve system, and a 4dB decrease does not mean a 4NR decrease. For instance, the NR value of a 40dB noise in 250Hz is 30, but the NR value of...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP noise complaints from my neighbour – what can I do?

@editor my house is the one on left.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air Source Heat Pump Policies – MCS Planning Standards

@derek-m The new kid on the block does not make noise 'constantly'. He/she does not generate LFN which is the source of insomnia, brain fog, palpitati...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air Source Heat Pump Policies – MCS Planning Standards

As I said, Table 2 shows NR35+ just outside the window of their bedroom. The assessor might have measured NR23 in the bedroom, but it does not mean th...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Air Source Heat Pump Policies – MCS Planning Standards

@elton I shared the link.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Air Source Heat Pump Policies – MCS Planning Standards

@jamespa I don't have evidence of measurements in my house. What I am trying to say is that NR23 in my neighbour's house which is a new building with ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air Source Heat Pump Policies – MCS Planning Standards

@jamespa Thank you so much for your comments. Table 2 of the WSP assessment clearly shows NR 35+ at position 5 (outside the applicant’s bedroom wind...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air Source Heat Pump Policies – MCS Planning Standards

@jamespa This brings me to my main concern: All the tax-payers money spent on MCS is of no use! The developers can install ASHPs wherever they want to...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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