Gill

@IanMcP There's some cheaper options out there and when I looked at hire cost it was going to be about £70 a day. Resale value on Ebay is pretty good to recoup some cost if you don't plan on hanging onto it. I went with hikmicro pocketE that I picked up new for £230. I asked for recommendation on this thread

I'm looking for independent advice on CWI suitability. When our underfloor insulation was put in, the installer had a look at cavities with a scope, took some photos, though it looked clear and rubble free and recommend we get someone out to do a proper assessment. A company we'd had a few recommends from came, drilled a couple of holes and could not determine if we had cavity walls. They then sent a quote to carry out CWI 🙄 Time to revisit this. I'm not sure about suitability for our place. Quite exposed bungalow west coast Scotland, brickwork isn't rendered, no mains drainage. Any advise on what service I'm looking for? Damp surveyor or is this some specialist survey. I'm drawing a blank on this. Thanks

Plumbworld for most of our bathroom /kitchenette granny flat items. I had one issue with a missing part from the wc and their customer service was spot on. Quick phone call to a person, apology for issue and replacement sent over in two days. Not getting messed around for weeks if things go wrong was refreshing.

I did some very very rough calcs recently more to decide if I should even entertain the idea of batteries. All In one givenergy. Around 5k ex vat. 13.5 kW. Install unknown especially with the new vat drop. 0.17 pence difference between by peak /off peak. Assume I can for at least one third of the year (winter) get 12 kW cheap rate daily from battery. 0.17×12×(365÷3) =248.2 Not great value there over 10 years (assuming performance isn't impacted). Looking at time of use tarrifs with two shorter off peaks I think I can potentially double by charge and discharge twice in a day so closer to 500 a year. If I add solar into the equation then our summer use would all be solar or off peak. Probably a small saving of about £1 a day. I do need to spreadsheet something but the above was enough for me not to bin the thought.

I looked at this the other day. This should be the link to it https://www.fogstar.co.uk/products/fogstar-energy-15-5kwh-48v-battery?variant=41546193174587 Would need inverter and as @MikeGrahamT21 mentions the max output is pretty low. Would love to think battery prices are going to become more competitive as we're now at a point where I think I can at very worst break even and something like givenergy all in one would give us small backup power as an added bonus. Will be interested to see if any vat savings ends up added to install costs.

Interesting. Hadn't heard of these folks but that's a very appealing price. Something else for me to research.

Meant to add.... I'm in Glasgow so Scottish regs.

Converted my garage to granny flat last year. Builder and architect told me I only needed warrant as I was putting water supply in there (already had electric) and changing to habitable space. If we'd not bothered with shower room and just floored and lined, no warrant needed.

Think this is the most useful page I've found for giving details of all tarrifs for your postcode. https://octopus.energy/tariffs/ Took me a while to find it. They could improve the website with some very simple changes. Make it obvious you can't switch to their more complex tarrifs until you join but at least give an option to see them on initial quote.

I got the same result and then searched the go tarrif price for my area. If I understand correctly I would have to switch to their eco 7 and then switch again to the go tarrif. I wonder how much difference that hour makes... Its generally 5.30 -7 am I use if I want the house warmed up in the morning. I'll experiment with 4-5.30am when I'm back to work.

Thanks. Hasn't seen that tarrif. Cheaper than my eco 7 day and night rates and only loses an hour of off peak.

6 for water on cheap rate. Max 3 if we're doing a big cooking session. Summer the eco7 is always better value. Surprised it's still working out cheaper now but we've not had a long very cold spell.

Was mildly surprised fixed rate isn't actually cheaper. Maybe a cold Jan /Feb will mix it up again but for now I'll stick with the E7 and keep checking the maths. Looked into those ecocent type systems a while back and just too expensive with no plumber up my way having the slightest idea about them. I suspect any repair costs could add up. Probably go solar and UVC when I can motivate myself to get into 2024 refurb action.

Around 6 daily for the water. In the summer that's our biggest use and only ever heated on E7.

The maths so far. Tight margins. Still seem to be better on E7 unless I'm messed up my maths. End of August to 31 Dec 1855 day x 0.32797 £608.38 1078 night x 0.1622£ 174.85 Total £783.23 2933 x 0.2816 (Octopus standard) £825.93