SteamyTea

All I need to make 150 meals a day. We only have 2 ovens, neither of them very big. There is so much nonsense spoken about cooking.

GRP boats float for many years, so don't worry.

Hit the bottle and you may be chanting that every week. Wonder if Alice in the Archer's will be joining them.

Not really, they are limited capacity and a lot more expensive than a water cylinder. Heat losses from a cylinder, though higher, are not much of a problem in a large old house. Most old places like this only have 2 months of the year when they are not heated. And that is in Cornwall, no idea where the OP is located, may be NE, or worse.

Just thought I would see what the energy content of LPG was, ~7 kWh/litre. So a 45 kW boiler would burn around 8 litres of fuel (allowing for some efficiency losses, actually 6.43 litres). A quick google and the price seems to be about 45p.litre, so to run a 45 kW boiler for an hour would be £3.6. Get insulating and fix those air leaks.

Can you fit one on top of the other?

I have not permanently fixed in my IH yet, I was thinking of making something similar as an extractor for mine. I want to fit some heat recovery as well, so an extra challenge.

Sensible when talking about thermodynamics. Latent is to do with phase change.

LPG is generally the most expensive, and you can easily get locked into a single supplier. Reducing losses is always the best thing to do.

Have you done a basic heat loss calculation on your place? 100 kW (not kw) is pretty big, but not ridiculous if you need a lot of hot water. Does it heat a cylinder up, what size it that?

Run a hose on it for an hour or two. Though I expect it will fail after the summer, differential expansion, felt, being a type of 'wax' will also act as a release agent.

What do you do if you have 21 windows.

It is relatively easy to put felt onto GRP, never tried the other way around as I know it would cause problems. Have they poured lots of bitumen onto the joint?

What power rating is your current boiler? And do you know how much fuel it used every year? Does it keep the house warm, and enough hot water? A kWh of energy is agnostic to fuel types, just as power is.

Welcome You can make a shell look like the finished product in a weekend then, tell us the secrets.

All those allow air to pass through, so making the external walls of the building is very important.

What type/s of insulation are you using?

As it is a workshop, go with the @joe90 method.

Why I suggest A2A and Evocents.

Can you design the pods so they have their own Air2Air heating and ventilation, then PV on top to help power an Ecocent type water heater? How are you going to get rid of waste water? If you can dig a very large trench, they at least you can put in a lot of insulation, but you need to cost it all up.

Because anti vermin mesh is put into any vents. Called 'best practice design'.

You can make a building airtight with a very well fitted polythene VCL in the inside. But if the external air is allowed to pass through the insulation, your only U-Value is the thickness of the VCL. Why buildings are wrapped in a breathable, but windtight layer on the outside. Then there are all the junctions that are hard to treat, or can easily fail. A squirt of silicone may get you through an airtest, but it is not a long term solution. Brick, block, page coats, render and plastering all fail somewhere, sometime. It is why no one ever retests their houses, ignorance is bliss. I am not having a go at traditional methods, TFs can fail as well, mine had when I moved in. Hard work finding where all the leaks are.

Seems to me that some of this is stopping the air that is inside from getting out. What you need to do is stop the air that is outside getting onto the insulation. I don't know what method you are constricting with, but assume that the first external layer (be it OSB, Block or Brick) will leak and the windproof wrap is not that good.

Just find your own competent plumber, it is not a difficult thing to do, unless you have some non-compliant components i.e. soldered joints on ST system. Or dump the ST, replumb the store so that the HP heats via the lower coil, then fit PV. Sell the ST on eBay. You may loose money, but you will have a better system. Consider a claim against the original installer.

Report the neighbours to the council, on a regular basis, just wear them down.