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From the horses mouth: https://www.gov.uk/government/news/record-breaking-auction-for-offshore-wind-secured-to-take-back-control-of-britains-energy It's more like £140 (gas) and £91 (new commitment) according to their figures. Surprised me as both seem very high compared to the numbers that I'm used to thinking about. Later in the doc they say the prices are often stated adjusted to 2012 prices and in that regard the wind is £65 which sounds much more in line with what I was thinking.

Also, assuming you have an 8kw ASHP, it's unlikely to draw any more than 3kw outside some unusual scenarios (assuming a well designed system). Normal operation should be much less than that. Electricity in should be less than 1/4 heat out (COP 4+) except during hot water cycle. So it's easier to generate what you need on the relevant phase. Assuming you have 3phase solar then the ASHP will be on one of the phases.

I thought the air sealing externally was for hot climates where you ran AC inside and want to stop the moisture getting in. With our climate we generally want to seal from the inside out. Still might be useful concepts here though. Edit: Matt is based in Texas

AFAIK Accoya is thermally modified Pine. So not a hardwood, but the modification process means it should be very resistant to the elements and should outlast almost all wood species.

I laughed but then felt a pang of guilt that @Pocster is always at the arse end of jokes. I'm not even sure I get the joke as I've read a lot of the threads on here and don't feel I've read about what must be a hell of a story. 🙃

I think there are two problems. 1. The pressure loss from the ASHP water system 2. The leaking tundish from the potable water side of the system I'm not sure if we have seen enough info yet to be sure.

If this is related to using the immersion then don't. Using the immersion is worse than using the ASHP to heat the water at this point.

Indeed and that's the bigger problem, though not directly (I think) linked to the pressure loss in the hot water system. Overpressure issues triggering safety systems much more urgent than loss of pressure. I would guess so but listen to the experts here not me.

Don't think I've seen anyone else mention this yet so I will. A small leak like this is all thats needed to drop the pressure in the system. I'm guessing this pipe is part of the DHW heating loop though wider photos would confirm. Unless I'm mistaken, until that dampness is solved I'm not sure it's worth looking for other issues.

Not talking a pro one. Lidl were selling them last year for not much (though duty cycle of these things means you'd need to take regular breaks for it to cool down). Similar can be found on ebay. Should be a load faster and quieter doing that than chop saw. Pretty sure you could find an angle.

Probably crazy, but what would it cost to crane it out? Investing time and money into a 6 month temporary solution is gonna add up. If it has to go then this might be cheapest. It'll get recycled anyway so not too much of a waste. Might be worth investing in a new toy (plasma cutter) rather than a chop saw though.

Welcome! Overall looks like a nice plan. I am curious what's driving decision to dedicate so much of the space to the master dressing room? I would have thought a smaller dresser and a 3rd bed/office would be a better use of space (and more saleable if circumstances change). Alternatively, a layout that allowed some of the dresser to be made into that extra room without significant rework. I assume you wouldn't have got this far into the design without serious thought into this so really curious to hear your thought process.

Clearly it's not for you, but just in case other people are looking, you can make wiser be dumb as a brick scheduler and thats all. It also lacks some of the more advanced smart features of others.

Though having read the OP now, Wiser doesn't seem right. All the thermostats, etc, are wireless (though not wifi). What I said was in relation to the main controller that sits next to the boiler. Not sure it would be a good idea with ASHP either.

Wiser works without the internet connection after being initially set up. I believe it's also possible to completely configure it through the Home Assistant add-on without using the Wiser app (going through the registration process) at all, though wouldn't recommend that. It was good this xmas to be able to turn the heating back on at home in advance of getting back after being away a few days.