SteamyTea

Post the old one back to them, but without any stamps on it.

Knowing how much you can loose: Partner Children Friends Dignity Time Body Parts Tools . . . . . .

@LeanTwo Are you looking to improve something i.e. flow rate on shower, or just looking to change an old broken system? There is little difference between a properly set up vented or unvented system thermally (though others will argue against this). The physics is the same i.e. pump x amount of water at y°C will be your power deliver, store x amount of water at Δy°C is your energy.

What sort are they, DS18B20?

Think most DC cable for PV is rated up to 1000V, though most are calculated on 600V these days. It may be buried in this old standard. https://www.bre.co.uk/filelibrary/pdf/rpts/Guide_to_the_installation_of_PV_systems_2nd_Edition.pdf

Yes, but just had to say it, boredom was kicking in after a long, 6 hour, car journey.

Not sure what the F& E will be used for with an unvented cylinder. What sort of control is on the stove to stop over temperature?

Just think, you can have that homo erotic relationship with Will Smith, and no one will be around to care.

Read this, then drink a big drink.

Mice will thank you for that I have wondered if it is necessary to punch a large hole in each tray. Surely they must cause over ventilation if anything.

Down here (I am actually up country right now) they just run the sewage pipes directly into the sea. Only the dogs are allowed to leave their shit on the land.

Plus the standing charge cost that may be £200 a year now (just guessing as don't have gas and can't be bothered to look it up).

That is the bit I had forgotten how to calculate, I knew it was there, just not looked at this sort of problem for 3 decades. Thanks.

Just swap like for like, I got my cylinder from Trevor at Cylinders2go. Quick delivery to my end of the country. Think about adding secondary insulation around it while the old one is our, makes a big difference. I just stuffed the cupboard with Sheet Foam and mineral wool, and lagged the pipes more.

When we see boilers have an efficient of xx%, has anyone actually measured their usage. I often read on here that the oil burning brigade say it is hard to measure and the don't always trust the delivery quantities. Same with gas boilers. And wood burners are even worse, no one bothers to weigh the amount of timber they put on, but all claim the moisture is 20% or below.

About a quarter of my daily usage in the non heating season. We already have this system up and running, called E7/10. The driver was different when it started in the 1960s. Then it was because electricity was going to be too cheap to meter.

A few years ago, the company next to us had some external claddings fitted. I noticed that one of our cupboard doors was stuck. This was right under where the work was done. Transpired that it was nothing to do with the work, just that the company had rearranged thier office space above. This included some racks to put files on. They moved them pretty quickly to a proper external wall, problem sorted.

Large, very round, and incredibly full. Going to shoot up the chemist's now.

Why I asked.

Much of it is to do with my lifestyle. I work evenings, so the house gets shut up at about 4PM, then I get home between 9 and 10PM. Just realised, I leave the back, downstairs window (where the temperature logger is) open a bit at night, I am a smoker. Here is a quick chart of mean house temperatures and solar power. I would have to slice it a lot more to find out what is actually happening, but I like 23°C as a temperature (grew up in the tropics), so don't open the back, upstairs, windows till it goes over that. But basically I have less than 3.5° swing between the coldest and hottest, and darkest and sunniest times. Why all this nonsense about timber frame houses overheating is bollocks. I probably have a greater percentage of glazing to wall area than most, but as it is small house, overall not much. Quick chart.

Yes

Got this one, but not a correlation as I did not find it very useful. Mainly because I am on E7 and the load is fixed, and my house temperature tends to stay the same.

All grid, I am on E7, which is why the larger loads are before 7AM. You can see when I put a new timer on the DHW as I shifted it over an hour, so save on an hour's standing losses.

Have hidden my architect designed house behind some pampas grass. Not because I am a R4 GQT old swinger, just because it offends me.

Just because I like charts, here is the monthly breakdown.