Replacing conventional boiler + hot water tank costs!

Phantomjoy

Right here goes

Had survey done yesterday and still waiting for the report but i want to replace the conventional boiler + hot water tank with a Worcester/Bosch combi boiler for on demand hot water (provided survey is ok of course).

I cannot get people for quotes. Hence why i am on here to as if anybody has a rough idea of how ,uch it costs to have this work done in a 3 bed 1930's semi in the Hillindon/Uxbridge area.

I want to get the same person/company to replace the whole bathroom as well. is that a good idea or shall i get seperate person/company?

thanks in advance for your constructive comments/replies.

martinsurrey

how old are the rads?

If they are pretty old, they might not stand the higher pressure of a combi system - so might need replacement

do they have thermostatic rad valves on them?

if not thats more cost

will the boiler go in the same place?

if not more cost.

I would budget £2k for a swap with no other work apart from removing the tanks (this is for a good boiler, not a cheap terrible one), to £4k if a lot of pipes need re doing and full rad changes + making good of new rad sizes.

happycamel_2

I paid £1350 for fitting and £900 for the boiler in May 2010. It was a Worcester Bosch for a two bed terrace. The £900 was discounted because I worked for an affiliated company at the time.

happycamel_2

Btw, the house had the now bore radiators, mostly without thermostats, none of that was changed. The hot water tank in the airing cupboard was removed. I think they took a tank out the loft too. The tenant loves it, it draws to water in abut 15 seconds and his gas bill is ridiculously low, I think £16 a month and that might include electric too.

CLAPTON

My new bosch Worcester boiler greenstar cdi classic combi has the most dreadful design to repressurise the water system.
Had I known I wouldn't have bought the thing.

R_P_W

I bought a flat last year which has a conventional boiler and tank. My immediate thought was to replace it with a combi boiler.

After moving in we found the boiler to be fairly new and whilst it took a bit if getting used to.....I have no need to replace it with a combi.

My gas bill is actually less over the winter than I was expecting. So unless the boiler is old and not very efficient.....give I a go for a few months and you might avoid spending money you don't need to.

Phantomjoy

Thanks for all your replies so far.

CLAPTON, this is excatly the one i was thinking of getting.

Martinsurrey, i will be on a very tight budget to renovate. the rads look ok. there is no thermostatic valves as far as i remember (if survey is ok, another visit beckons methink). i was kinda hoping for a £4 k total bill for boiler and bathroom fully fitted.

R P W, getting rid of the boiler and hot water tank will actually increase the size of a bedroom and also the bath room because at the moment they are found inbetwen the 2. this will aloow me to get fitted wardrobes in the future and space for a small shower.

DRP

CLAPTON wrote: »

My new bosch Worcester boiler greenstar cdi classic combi has the most dreadful design to repressurise the water system.
Had I known I wouldn't have bought the thing.

We've recently had one fitted and as a 'black box' the boiler is working very well e.g. bills the same or cheaper than before, quick to heat, better temperature than old boiler...

What would i notice as a user if this boiler is dreadfully designed? :idea:

RupertTheCat

I had a worcester bosch greenstar highflow 440 condensing boiler fitted in 2005 and it's been brilliant, cut my gas bills right down - I've been paying £55 a month all year around for gas for quite a while now and I work from home so it is on some of the day in winter. It cost about £4,000 all up to fit as it had to be located in a different place than the previous one with new pipework.

My one is a bit fiddly to repressurise (lots of faffing with taps and hoses), but you only have to do it once a year. Getting the cover back on the front of the thing is the worse bit, but if you don't get it back on properly it vibrates quite loudly.

I would most definitely buy worcester bosch again, as it's really been trouble free to run. Our house goes over 4 floors, and we do have trouble with the radiator on the top floor, but I don't blame the boiler.

CLAPTON

DRP wrote: »

We've recently had one fitted and as a 'black box' the boiler is working very well e.g. bills the same or cheaper than before, quick to heat, better temperature than old boiler...

What would i notice as a user if this boiler is dreadfully designed? :idea:

With a combi boiler you HAVE to re-pressurise the system occasionally ... it's not optional because if you don't it stops working

with most combis it's a very trivial operations... turn two little taps and it's done.

with the worcester it requires some strength and it awkward to access
I would guess that the average women or older person wouldn't be able to manage

If you get it wrong you flood the floor


so that's how I recognise a bad design.

vivster

Cost us just under £3k (maybe £2,850 or something) to have a Worcester Bosch Greenstar installed earlier this year. That included supply and installation of the new boiler, it had to resited slightly, and a new flue added. They also took out the old hot water tank and another one in the loft. They flushed out the radiatiors, but as they all already had TRVs, nothing else was done to them. Wireless thermostat also installed. Seven-year warranty for the boiler, parts and labour.

We're in south east London.

No problem repressurising. It's just a little knob underneath the boiler.