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Last seen: May 31, 2026
[quote data-userid="5190" data-postid="19305" A volumiser in the primary, together with a good insulation of the PHX to reduce delta T to around 1C m...
@cathoderay With regard to the cycling:Exactly what controls do you have? I understand you have a manufacturers weather compensation system, and T...
A few ideas to consider: The ashp is outside - no doubt it's measuring produced power at the unit, so will include any pipe losses that the oil boil...
"Natural" gas is effectively an unlimited supply of highly flammable material - and so is super dangerous! Our R290 gshp is outside (tick!) and use...
The heat exchanger material conductivity is actually a compromise. Through the material, the thin way, we want high conductivity. Along the material...
@gutoffowc Plastic heat exchangers are usually used inside MVHR units. For an air:air heatexchanger, there's not that much heat transfer needed ac...
@iancalderbank I'd love to see MID certified meters installed under MCS, and then a guaranteed SCOP performance from it! I appreciate the meters c...
The blog on this forum compares installed SCOP to manufacturers datasheets, giving overall average of 2.7:
I think that the price ratio of Electicity to Gas is largely responsible for the UK's reluctance to embrace heatpumps. I understand that it will come...
@gutoffowc It sounds like it needs more than recalibrating. Perhaps the original installers? We have a vent axia sentinel kinetic BH plus, it ha...
Here’s an example of a mid certified meter- if you have a spare slot in your consumer unit, it’s an easy install for a sparky, split core so just clip...
The compressor is brazed to copper pipes - brazing is basically much higher temperature soldering, joining copper pipes together with a dissimilar met...
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Degrees of Separation
Latest Posts
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RE: Several AC coupled batteries
I must admit that, even as an electrical engineer (who ...
By ian33a , 1 hour ago
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RE: Heat pump design review please: 5 kW Vaillant aroTHERM Plus heat pump
@jamespa many thanks, definitely i will give the pre...
By ragtime27 , 9 hours ago
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I take the point about the scarcity of helium gas - tho...
By Billsp44 , 10 hours ago
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RE: Heat pump installation quotations
@jamespa I noticed that in the Heat Geek design consult...
By Batpred , 11 hours ago
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BUS uplift to 9k for off grid installs. I can't establish if new builds are specifically excluded.
Hi.The BUS grant for new self builds is pretty straight...
By jimseng , 18 hours ago
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Looking for installer in Somerset
Hi All I am looking for someone who can re quote for ...
By jimseng , 18 hours ago
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RE: Electricity price predictions
Good point, I do expect the bonus of putting my energy ...
By Batpred , 19 hours ago
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RE: Daikin ESPAltherma and Home Assistant installation
@bash, something we haven't touched on already relates ...
By Majordennisbloodnok , 21 hours ago
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RE: GivEnergy inverter tripping due to over-voltage?
@transparent it might be interesting to note the early ...
By Tim441 , 23 hours ago
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RE: Help me keep the faith with my air source heat pump installation
@jamespa these:
By AdamK , 1 day ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Vaillant arotherm plus 12kW. Installed March 2025. Ex...
By Harebell , 2 days ago
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RE: Load Shift and Lifestyle Shift Complete - our journey has ended, for now
Last year we managed a net nil cost. Exceeding all my h...
By Tim441 , 2 days ago
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RE: MCS 2.0 - Changes in January 2025
It strike's me that there's various improvements which ...
By Temperature_Gradient , 2 days ago
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