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Sheriff Fatman
@sheriff-fatman
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Joined: Apr 20, 2025
Last seen: Dec 21, 2025
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Topics: 2 / Replies: 124
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Reply
RE: Air Changes per Hour - ACH and the MCS requirement

@matwin I'm going through a similar quotation journey currently (& hopefully nearing the end of it now). One relevant piece of information I had ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Commencing on an ASHP Installation Process

It varies by room, but the conservatory is assumed at 2 per hour, as is the kitchen, hallway and landing.Living room and upstairs office are assumed a...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Commencing on an ASHP Installation Process

Just as a quick sense check, this is the Vaillant data that led me to the above quote. If I'm reading this correctly, then for all outside temperatur...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Commencing on an ASHP Installation Process

@jamespa I also suspect the 5.11 figure was used as a justification to exclude it from the design. From what I can see on the Vaillant model, it's o...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Commencing on an ASHP Installation Process

The outstanding heat loss calculations filtered through this week. I received 3 in total with sufficient detail to interrogate by room, which has all...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Commencing on an ASHP Installation Process

Interesting points, and I can see why you'd think this as the clarity on the conservatory has developed through the course of the quotation process. ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Commencing on an ASHP Installation Process

@johnmo I'm not chasing quotes, primarily. I'm chasing designs - or at least a vague consensus of opinion for our particular situation with the conse...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Commencing on an ASHP Installation Process

Today marked the 4th consecutive working day where I've had someone visit the house to do a heat pump related visit. 3 last week were potential insta...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Commencing on an ASHP Installation Process

I had a telephone call with the senior designer at EDF today, but was somewhat underwhelmed to discover that they've moved away from the suggestion of...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Commencing on an ASHP Installation Process

It was added by the previous owners, but the conservatory is built on to what would have been the original back door for the property so has the origi...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Commencing an ASHP Installation Process

So, by means of a brief update, I've made some progress over the past week or so and the picture is becoming a little clearer.Octopus have provided th...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Commencing on an ASHP Installation Process

I did wonder where all the detailed knowledge came from, and had assumed you were involved in installation in some form or another. Caveat duly noted...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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