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I'm going to get a quote for a consumer unit replacement (and potential inspection, depending on what the electrician says). House and all existing wiring and consumer unit is almost 30 years old, although a RCD circuit for the shower was added separately when the last owner lived there...

Just wondered what the general concensus was on wireless programmers/thermostats (in one), as opposed to a hardwired thermostat and separate hardwired programmer. Obviously the wireless ones require less installation but are they generally reliable or are the units (and the receivers in the...

Is there any reason to go for a mk1 duotec over a mk2? One RGI I was speaking to says there have been quite a few reported problems with the mk2 and he would only fit a mk1. But aren't these older technology now and for how much longer will they be available? Alternatively, I have another guy...

What's the name of those mdf boards used for flooring? I've heard a couple of people refer to them as 'rockware' or something like that but googling that word comes up with nothing. Am I mis-hearing it?

Ok cheers guys. I'm waiting for the quote to come back and am getting a couple of other quotes. Will see if any of the others run their business in the same way. I'm not bothered about saving a few hundred quid if it could cause problems later down the line. and newgasinstaller - at least...

Ok so Dan, as an installer yourself, why say that it could be a prob if the boiler goes wrong and that the installer has no responsibility for guaranteeing the operation of the appliance?

As it stands, this valve would be to replace a similar valve in the radiator tail which wont allow radiator only to be drained. So, I don't think I'd be worse off with this one. The seem to be dual purpose vs the older ones in the tail as with these you can drain rad only or rad and system. I...

Graeme I presume with that one you can either drain the system or drain the rad only. I think that's what I'm looking for, although I thought that's what the one in the link I posted allowed.

Tony - thanks for the reply. What is your understanding on the impact upon warranty? The RGI said it makes no difference who buys the boiler, whereas several responses on here say it does. The RGI was explaining the boiler could come with 7 or 10 years warranty (Baxi) depending on the...

Do you mean if you turn both valves off then the radiator will not drain? The reviews seemed to say it would.

Thanks, I appreciate your replies. Dan - does him not being vat registered have an impact on the warranty? He said to me that it makes no difference who buys the parts, and that he will sign off the paperwork and the guarantee will be just the same. He's on the gas safe register and has done...

I've currently got a drain cock fitted in-line in the tails to a couple of my downstairs radiators. These allow the system to be drained, but of course, not the individual radiator. If I had these removed, and fitted one of these instead...

I’ve had a quote for a new heating installation and the RGI has said the following with regard to parts. Basically as I understand it if he buys parts for all his jobs and effectively sells them to customers then this counts as income, although obviously he’s not really making any/much money on...

I've got no immersion heater anyway! From speaking to the last owner, British Gas replaced the HW cylinder, but didn't refit the immersion, so I've just got a lovely blanking plug in the top. Dan, is your last comment about the integrity referring to the pressure that combis run at vs my old...

I'm from the school of keep it simple, stupid. I don't doubt weather compensators have their fans (my friends dad likes his, but i think it's more for bragging rights in the village pub) but I subscribe to the more complicated a system is, the more there is to go wrong. I know combis have...

As part of the overhaul, I will be getting 6 radiators replaced. I already had 2 replaced recently (swapped from singles to doubles) so there's going to be a lot more water/radiator area to heat, but that shouldn't be a problem for a more powerful boiler. Upstairs is particularly under specced...

I do seem to read conflicting things on here. Tony, what are your opinions on radiators? Is it best to over-spec them and go bigger, rather than go for close to the BTU requirement (taken from a couple of different sources)

Is this standard advice nowadays? I've used a couple of different sites to calculate BTU requirements and am looking at radiators a couple of hundred BTUs over what they come up with. Are you saying I need to be going for thousands higher?

OK, so going back to the bit I quoted you saying earlier, are you saying the pipework needs fully overhauling when fitting a combi to a system that was originally designed for an open vent? Otherwise the return will be too hot and it won't condense?

What relevance is the insulation of the house? I thought the size of the rads and the boiler output dictated the expansion required rather than the insulation. Or is it just the case that the longer the radiators are on (e.g. due to bad insulation) and the hotter they get then there is more...