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Or forget the TRV, and switch the pump with a roomstat for that room.

It's unlikely you would be able to put a pump on the flow from the boiler before the T as that needs to be kept clear as it will be the vent pipe from the boiler. It would have to go on the flow or return pipes to the new rad. But yes it would work then. You might need to use a manual valve...

It doesn't have to be done by a sparkie who can self certify. Anyone is at liberty to do the work, and then get it inspected by BC just like other aspects of the extension work. Is the existing elec. work still accessible so that it can be inspected for safe cable routing etc. if necessary...

Well, I've installed one :) in a friends house, it seemed perfectly solid afterwards and is still going strong. Can't see any reason why putting on floorboard should be a problem as long as they are sound. Again you could put a bit of ply down first if you were bothered

You can't assume anything when buying a hous.e Ignoring things like NHBC for new houses, basically what you see is what you get. If you want to be sure about the boiler/CH or electrics etc.then you should get an inspection of those done before purchase (and no doubt your survey report would...

I can see this all frustrating for you, the perils of buying a house and all that. Forget the original installer, you had no contract with him, you have no claim against him, when you buy a house, you buy it in the state it is in. If you want to be sure about the house services, it is your...

Yup, certainly add the valve, certainly consider having it pumped as well (existing pump, or additional pump depending on setup). I've recently converted our old gravity HW system to pumped and the cyclinder recovery time is much quicker, unsurprisingly - esp. as we had a rather convoluted...

Well, first off don't feel you have to go ahead with anything unless you are happy you understand everything. I suspect these schemes often attract the chuck it in quick and take the money merchants. At the very least I'd be on the phone asking them to explain the things he said. You need to...

As long as the pipe is supported on the ceiling below, and it's not leading to strain on any joints, then I do exactly that tomsim. I prefer drilling joists to notching though, keeps them out of they way of nails etc. I found my little Bosch 10.8v drill/driver will mange to drill the...

As long as the manufacturer sells legs for them,and you use those then you are fine . - I think the issue with them being bedded flat on the floor is not so much that they can't take the weight suspended but that the base underneath might not be perfectly flat - nor the bottom of the tray - so...

Would you leave your heating on full if you were away for two weeks in winter - probably not, the same principle applies for a day. Of course there is a difference. Leave your heating on and measure the consumption, then do the same with the heating turned off when un-needed. As to...

Not really, it doesn't change the principle of the situation. A well insulated building will lose less heat, but it will still be cheaper to only heat it when required. What will be different is the is the benefit in terms of energy used and money saved.

I've put some old duvets and pillows around ours. Not esp neat, but hasn't costs anything. The marginal benefit on a preisnulated cylinder must be small, esp as for much of the year it is just adding to the house heating However it is worth paying attention to the pipes from the cylinder...

Sounds like you might be better off going with the suggestions above of using a relay to switch a standard 240V zone valve. And the advantage of sticking with easily available components This one in a pattress box so is quite neat - operates on 24V DC and will switch 230V/8A...

Yes, according to this, it is as PrenticeBoyOfDerrysays, the responsibility of all who are served by the pipe. http://www.ofwat.gov.uk/consumerissues/rightsresponsibilities/supplypipes/

I can tell the difference at the boiler between ours, With a rad, you can always just check which end warms first when the rad is warming from cold.

Niche product maybe, but I've come across that exact sort of tap on campsites before. Used for filling up water containers etc. so a short attached hose is useful

Yeah, I didn't really think about the practicalities of running a wood fired stove for this. when a kid, we had a solid fuel stove that seemed to do this ok. But that was hopper fed as well,so would stay happily burning for ages. and the OP might want to cost up the price of logs, and make...

Well, when I did mine that is how I dealt with mine. It seemed easier that way. In essence that is how we do all heat loss calcs by dividing up the house into blocks - just normally these blocks are individual rooms, and might be a different temps. You might find this page on the uk.d-i-y...