Last seen: Aug 29, 2025
To address COP, the data I’ve used for our property is on compressor consumption - the actual amount of electricity we drew from the grid to run the h...
January 3, 2022
@julianc, I think that electrification has to be the end goal, and I completely get your point about burning HVO (or any other biofuel) for home heati...
In the attached document, what does nil kWk mean (when looking at electricity tariffs) and why is the tariff calculated by dividing the sum of money b...
The carbon emissions factor is from the government's Standard Assessment Procedure for Energy Rating of Dwellings (SAP 10.2) I don't profess to be a...
@prjohn, energy costs are worrying – I'll read this article tonight when I get a chance. Everything these days is politicised.
The bivalent controls on our heat pump don't allow us to run the boiler on weather compensation which is a pity. When we get off the HVO trial, we'll ...
@kev-m, that's very satisfactory. That would have been around £76 this time last year with Symbio. But still very good.
@kev-m, that’s scary. I’m genuinely concerned about the rising cost of electricity. Running a heat pump is electricity intensive and it’s not the same...
@kev-m, what was your heat pump usage in December?
@julianc, thank you for your honest comments. As you know we are extremely pro heat pumps and renewables, but consumers need more options. Many of you...
We’ve been running our air source heat pump alongside our boiler that’s been using HVO (hydrotreated vegetable oil) since December and we’ve crunched ...
Latest Posts
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RE: Midea ASHP – how to set weather compensation
Something isn't right here, you don't design ufh to wor...
By JamesPa , 1 hour ago
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RE: Electricity price predictions
the post code lottery is only one thing that is very wr...
By Judith , 2 hours ago
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RE: How Do I Know When the Hot Water Has Run Out?
@grahamf Personally I would consider bypassing one of t...
By JamesPa , 5 hours ago
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RE: What crazy nonsense are inverter limits and why are they imposed?
No I'm not mining anything @drei but I am doing R&...
By Transparent , 5 hours ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
Yes, the 'global warming potential' GWP of R32 is quote...
By Temperature_Gradient , 6 hours ago
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RE: Rodents! A word of warning for heat pump owners
Wasps caused frequent tripping of my lighting circuit a...
By JamesPa , 6 hours ago
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This is one of my biggest bugbears these days, how AI d...
By cathodeRay , 7 hours ago
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RE: Ecodan & MelCloud scheduling
Yes, the 2 are separate. To add to the complex desig...
By HCas , 2 days ago
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I should clarify that the FoxESS web interface is not l...
By Old_Scientist , 2 days ago
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RE: Mitsu Wireless Controller and MelCloud
@robs Hi Rob, At the end of a note to Mitsu UK, thank...
By DavidAlgarve , 3 days ago
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RE: Why so many sigenergi installer recommendations?
@adamk Tesla is a great option, it’s also one we instal...
By SAEnergy , 3 days ago
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RE: Flexi-Orb Heat Pump Scheme: A Game-Changer for the UK's Heat Pump Industry
As a potential heat pump customer, it would be good to ...
By Temperature_Gradient , 4 days ago
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RE: Octopus replacing the fixed 15p/kWh export rate with a market tracking one
@trbob I have just extracted the details for Agile Expo...
By Toodles , 4 days ago
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RE: Heat Pump Books For Beginners – Bodge Buster & From Zero To Heat Pump Hero
The Ultimate Guide to Heat Pumps is less than a month a...
By Mars , 4 days ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
@editor Hi Mars, We have just installed a Grant Aerona...
By GrahamF , 5 days ago
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RE: Sanity check please. Battery storage and inverter sizing.
There are MCS guidelines about how close to the edge/ri...
By Old_Scientist , 5 days ago
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RE: Balancing financial efficiency and comfort using the Octopus Cosy tariff
I estimated our usage on the following basis. The mos...
By Old_Scientist , 5 days ago
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@editor Something changed in this last 12 months, they ...
By ASHP-BOBBA , 6 days ago
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RE: Does anyone have experience of a smart water meter?
Just to give a sense of scale, I've used the CCW water ...
By Majordennisbloodnok , 1 week ago
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RE: Powerwall 3 or Myenergi or something else?
We have a Tesla Powerwall 3, recently installed, so I m...
By Old_Scientist , 1 week ago
