Last seen: Sep 8, 2025
@delt I liked to make a stab at this, so some of the things to consider: engineers travel time to site, say 1 hour @ 65/hr engineers travel time...
Additional info on pull down end of line reistors: To eliminate the presence of reflections from the end of the cable, it must be terminated at both...
@cathodeRay, Would I be right in thinking that your hourly COP value calculation includes periods (minutes) when the compressor is not running? Or mo...
@ cathodeRay I could see how the instantaneous COP value could be in the order of 11.6, but I can't see how that could be the average over an hour due...
@batalto was your boiler located in the middle of your garden, or in your kitchen, utility room or loft. Your missing my point, whatever the boiler ef...
You suggested a figure of 80% for the efficiency of you oil boiler for converting the fuel to hot water, where does the other 20% of the energy goes, ...
One question if I may, where was your old oil boiler located; within you home or in an outbuilding?
Latest Posts
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@morgan Fully agree with you. It shouldn't be the homeo...
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RE: Solar Thermal DHW and ASHP
@judith That makes sense to me! If I was in @alex_n '...
By HCas , 1 hour ago
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RE: Vaillant aroTherm Plus 10kW thoughts?
Good unit. And the 10 kW is the same as the 12 kW I ...
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
@judith thanks for your suggestions. Starting from col...
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RE: Inventor (Midea) Heat Pump short cycling advice
I switched to "fan coil mode" to be able to set water t...
By immunity , 6 hours ago
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RE: DESNZ doing a survey which asks the right questions!
Without a survey their only source of data is probably ...
By JamesPa , 11 hours ago
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RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
I think you’ll find it depends on the room heat loss. A...
By Judith , 20 hours ago
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RE: Can you help with our research: solar panels, EV chargers, home batteries, heat pumps?
Just done your survey!
By Judith , 21 hours ago
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RE: Failing heat pump system - seeking thoughts on a rebuild
@cleardene-ashp just thinking about your issues here. Y...
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RE: Midea ASHP – how to set weather compensation
@cathoderay OK let's wait and see, it sounds an interes...
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RE: What is the Heat Geek Guarantee?
@judith, I’m with you on Heat Geek, but there really do...
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RE: Electricity price predictions
Community energy installations are a great idea, but th...
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RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
Ooh, heat pumps in neon blue wrap 🤣 🤣 &...
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@profzarkov Good to know in case it ever happens to me...
By bontwoody , 3 days ago
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RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?
I mean, is this surprising? The local installers in my ...
By Alex , 3 days ago
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@old_scientist sorry, I should have made it clear that ...
By GrahamF , 3 days ago
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RE: Boiling Mad: Exposing Radiatorgate
Hi @Rob, I’d be more than happy to contribute. I have ...
By DREI , 3 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@andris a great year - very happy with our system
By Profzarkov , 3 days ago
