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Who or what is OP?

£8000 :?

I would fit a combimate Either a cartridge type that are good but unable to tell when exactly to change but the easiest and better option is the combimate that takes siliphos balls. Easy to change and easy to see when its due more balls. Hope this helps

Come on now, give us a clue :!: :!: Am i charging enough, its only a days work for a boiler swap. With regards to your original question, it cant be more than £6000 Surely

If you wanted gas main to your property from the street depending on wether there is already gas in the area. I would say your looking at about £4000. Just from my experience, but there is loads to take into account

What would you say the average age is of the people on here, i.e plumbers :?:

I had this same thing about 2 days ago, pump blew so replaced it, but when it blew it took out the programmer to. If like you say you swapped the wires from ch to hw and it fired its most definately the programmer.

Supply and fit Alpha combi with premier pack for 5 year garuntee, £1200+ vat Labour only fit supplied boiler, £500

Yeah i see what you mean now, but like you say cnat see why you would want to.

If i was to do it supply and fit i'd say about £3500. If British Gas were to do it i'd say £6000 Tell me, need to know if i'm to cheap or to expensive

You can do anything with out corgi providing you do not interfear with *********** However you should be careful with some things if your not sure, i.e, safety discharges and such. There is always someone you can ring if your not sure.

The chances are, if you do have a header tank then the head of pressure is not great enough. You probably only have half a meter of head so by the time the water gets to the radiator there is no pressure to force it through or around the radiator. Try turning the pump up, but beware of air that...

I would suggest you or someone drains down the boiler and you put an automatic air vent on both the primary flow and return off the top of the boiler. This is very frustrating and quite hard to resolve cause the air traps in the boiler. I thought it was strange to have this issue n a combi, as...

This should be fine providing you have good pressure and flow rate through your other taps

If the boiler is definately a combi, then the blow off should come off the bottom of the boiler and go directly outside. If the boiler is getting very hot then it should be cutting out on the thermo stat. If its not a combi then its just that like you say the water is not circulating through the...

The valve should cost around £60, i personally would charge you £50 if it took about an hour. For call out and travel etc.

I would strongly recomend you get someone to take a look. If it is kettling then you must either have air in the boiler or its over heating. If its over heating then it should be discharging via the blow off. The unsafe issue is that if it is overheating and not locking out then you could...

I think the last chap is right there, it is most definately the diverter valve. They are very easy to change yourself. Presumably it's a heatslave, or danesmoore. Generally if you take the casing off the diverter is a box type valve with 3 pipes and a wire on it. Get the name of it, probably...

The combi is the system, so how exactly do you fit a combi to a vented system? Are you sure you know what your talking about

I have come accross this a few times, more so recently for some reason. I've been finding it's negative pressure caused by your cold fill being on the return as apposed to the flow. Why this would have gone crazy recntly is beyond me, but the best way to find out is to either, 1. put a check...