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MikeF
@mikef
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Eminent Member
Joined: Nov 18, 2023
Last seen: Apr 7, 2025
Profile Activity
Topics: 3 / Replies: 10
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Reply
RE: How many compressor starts per year

@gc61 Less that one start per hour is very good, our pump can manage that when its cold, but it cant modulate down low enough in Spring and Autumn, ev...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
How many compressor starts per year
8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 13
Views: 2474
Reply
RE: Smart meter not so smart

@transparent Thanks for the info, i will try to get EDF to escalate to the DCC, if that doesn't work i will have to wait for the new WiFi system to go...

11 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Topic
Smart meter not so smart
11 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Replies: 3
Views: 928
Reply
RE: Best control strategies for heat pumps that are way oversized

@tim441 Re the silent mode, It made me think have a missed something, but i have looked it up, on the Viessmann all the silent mode does is restrict t...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best control strategies for heat pumps that are way oversized

Does anybody have any figures re the efficiency of heat pumps when under different loads? A car engine ticking over is more efficient than one runni...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best control strategies for heat pumps that are way oversized

@jamespa It depends on what "bad" cycling is. In spring it would run for a total of 4 hours in the 9 hour period that i had it set for, it would cycle...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best control strategies for heat pumps that are way oversized

Our heat pump is oversized by a factor of 2. It is capable of 10Kw at temperature of -5, the most we have used in one day in the last 2 and a half yea...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Viessmann Vitocal 250-A in the UK

We have a 10Kw Viessmann 200A it SCOP is currently 5.2, this has increased over the last 12 months from 4.7 by tuning the system to our property. The ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

@cathoderay Re the 1.18 correction figure. I have a completely different pump (Viessmann) and have a well insulated property with underfloor throug...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

With reference to the now christened Vampire load, on my Viessmann i have one meter monitoring all the energy to the entire heating system, the other ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

I am new to the forum, but have been following this topic closely, as I am sure are many other heat pump owners. To quote Sherlock Holmes - When yo...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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