Last seen: Aug 28, 2025
Building Regs Part-L 4.24 covers pipework insulation for both DHW and space heating. There are some comprehensive online guides to insulation which ...
I wouldn't be happy with the level of insulation or the fitting on the photos from @toodles The brass isolation valves behind the ASHP remain enti...
It definitely won't @drew-pa The standing charge is based on seven different parameters, but is substantially set by what Ofgem allows for the regio...
Hi @jamespa you are very welcome to lever whatever knowledge you wish from this Forum. Roughly whereabouts are you in the UK?Have you got any commun...
The specification for the UK mains distribution grid is 230v, minus 6% to plus 10%which equates to 216 - 253v Equipment certified to G98 for grid-co...
You shouldn't be left to ponder this.Before a heat pump gets installed there should be an energy survey conducted (often by the installer).That's how ...
I would go a step beyond that recommendation. The pioneering development of on-chip wear-levelling algorithms was undertaken by the Israeli firm, M-...
I re-read it, and I think you're right @robl UKPN are actually allowing you a 34A maximum export to the grid. That has the potential to cause some s...
Thanks @rob1 - Sunsynk is the manufacturer which I expected someone to mention first. Here's one of their generic connection diagrams There's a ...
For someone to have succeeded in obtaining a G98 approval, then the battery will be DC-connected to the inverter the inverter will use some form ...
Here's my own graphical interpretation of the conditions under which the G99 Fast-track process can be used: The Electrical Networks Associati...
Not quite. If the inverter is an off-grid type then it only requires CE safety-level certification.G98 is only for devices that can export. These ...
Latest Posts
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Think I just replied without content! Interesting thi...
By dgclimatecontrol , 1 hour ago
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RE: Electricity price predictions
Unfortunate that OFGEM increased prices again from Octo...
By Scalextrix , 3 hours ago
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RE: Ecodan & MelCloud scheduling
Yes, the 2 are separate. To add to the complex desig...
By HCas , 22 hours ago
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RE: What crazy nonsense are inverter limits and why are they imposed?
I think there may be a little confusion in the wording ...
By Old_Scientist , 1 day ago
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I should clarify that the FoxESS web interface is not l...
By Old_Scientist , 1 day ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
Previous was vented and I needed a shower pump and a ve...
By JamesPa , 1 day 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 , 2 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 , 2 days ago
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RE: Rodents! A word of warning for heat pump owners
Hradline in Telegraph: Brace for plague of rats after s...
By Tim441 , 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 , 3 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 , 3 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 , 3 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 , 4 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 , 4 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 , 4 days ago
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@editor Something changed in this last 12 months, they ...
By ASHP-BOBBA , 5 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 , 6 days 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
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RE: Mitsubishi PAR-WT60R-E Wireless Controller installation
@morgan They have been paired once but it was thought b...
By DavidAlgarve , 1 week ago
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RE: Isolating the system for a planned power cut
A great many ground-mounted local substation transforme...
By Transparent , 1 week ago
