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MikeF
@mikef
Member
Eminent Member
Joined: Nov 18, 2023
Last seen: Feb 3, 2026
Profile Activity
Topics: 4 / Replies: 19
AllTopicsReplies
Reply
RE: Setback savings - fact or fiction?

I cant offer any charts of measured figures to the defrost debate, however i can add observed conditions during a defrost. My heat pump is outside the...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

@cathoderay Maybe i am a skeptic, men in white coats were involved with the Dieselgate emissions scandal, it didn't stop them, when money is involv...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

@cathoderay It occurs to me that there is one variable that 99.9% of heat pump installs cannot accurately check, it is the energy output. Most of u...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

@cathoderay Re defrost systems, i asked the engineer about these when the system was fitted. Viessmann have a two stage defrost, if the air tempera...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Optimum new build house design for Heat Pump

@ashp-bobba Thank you for a very detailed reply, the idea of having say 3 loops in a room instead of 2 makes sense if there is a smart controller f...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Optimum new build house design for Heat Pump

@bornagain Sounds a perfect fit, I am in a 200m2 Bungalow, unfortunately i didn't know about this site so allowed the heat loss calculations to dic...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Optimum new build house design for Heat Pump

@jamespa They will see what the plumber is suggesting when he gets back the projected heat loss, Maybe with a fancoil on the landing, the design te...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Optimum new build house design for Heat Pump

@jamespa I will see what the plans are for the hallway, it should be possible to use it to get heat upstairs. When balancing the UFH flows the hall...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Optimum new build house design for Heat Pump

@majordennisbloodnok I agree that they should look at MVHR, but will need to get their builder onside, some builders don't think air-tightness matte...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Optimum new build house design for Heat Pump
3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 14
Views: 2047
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...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
How many compressor starts per year
1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 13
Views: 4799
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