Average Labour Cost/Price to Change, Replace or Fit a Boiler (Plumbers & Gas Fitter day rates)

To clarify the following prices it is recommended that you read the article in the INFORMATION box below the PRICES…

(These prices are based on a tradesman’s rate of £150.00 per day and a labourer if required at £100.00 per day. This includes the cost of buying and collecting any materials, dumping any waste if necessary and any incidental materials they will need. The minimum price will usually be for a half day)

How Much Does It Cost To Fit a Boiler?

cost to fit a boiler

The new boiler will by law, have to be a condensing boiler

Job 1
So, you want a new wall hung, standard (connected to your hot water cylinder) gas boiler in the same position as the old one.

This is one day’s work for 2 men, plus all materials.

Cost: £1000.00

Job 1a
Oil? There are wall hung ones around but it will cost an additional£400.00

Job 2
You want to change to a gas combination boiler in the same place as the old standard boiler, empty all the loft tanks and pipes and remove the hot water cylinder.

Cost: £1550.00

Job 2a
Oil? Not on the wall I’m afraid and expect an additional
£1000.00 to the above price

Cost: £2500.00

Job 3
To fit a new wired in programmer, roomstat and hot water cylinder stat, you will need an electrician. He will charge one day's labour plus the 3 new units and cables.

Cost: £235.00

The Building Sheriff recommends Peter from gasplumb.com (in West London/Surrey/Middlesex) - he works on The Building Sheriff's own home!
Call 07887506991
(gas safe no. 529 102)

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For your must-see guide to Tradesmen's Rates please click on the map…


A Price Guide and Information Sheet on Fitting and Installing a Boiler


Boiler Price Guide and Information Sheet on Installation and Replacement

Boiler Fitting! Well are you in for a treat! You are about to swap that 15 year old puffing billy for a brand new super efficient CONDENSING boiler!

I fitted an oil fired one recently in deepest Yorkshire. It cost an astronomical amount of money but do you know what? It has an efficiency of 98.9%, that means that for every quid's worth of oil they pump through it, only 1.1p goes up the chimney. The rest of their dosh is spent on doing what they
should be paying for, heating the water to flow round their seriously efficient underfloor heating.

For once our friends in high places have insisted on making us do
something, which is actually worth doing.

Hopefully you live somewhere sensible, somewhere with a gas supply. Your new boiler will be half the price of an oil one, just as efficient and it should go in the same place as the boiler, if it’s on an outside wall.

It needs an outside wall because it will bleed condensate all the time. This is basically just waste water created by the condensing process, (Coming back to you now is it? Those days dreaming about playing for England in science classes…… condensation creates water...).

This has to be taken away either to an internal waste pipe (lavatory waste pipe), or an outside
gulley (drain) or a specially constructed soakaway. It can’t be allowed just to drip onto the garden or path.

So if you are replacing an existing boiler, the only real problem you will have is if you wanted a new condensing
back boiler in a chimney breast in the centre of the house. I don’t think anyone even makes one.

If it’s gas, the fitter will have to be Gas Safe registered, if oil it’s OFTEC. Electric boilers being 100% efficient don’t have flames or chimneys and don’t need to be condensing.

I say electric boilers are very efficient and they are, but the
on peak electricity they use is comparatively expensive. (You want your heating on in the day and evening, and those are peak times).

However the latest ones heat water at night (off peak) and use it during the day but it still needs an on peak boost. Anyway, electric boilers must be fitted by NICEIC approved installers.

What if you want to replace your existing standard boiler with a condensing “combi” (combination boiler). These don’t need a
hot water cylinder, therefore you get the full use of the airing cupboard and the water tank and all the loft pipework can be emptied. Combis provide your hot taps with water on demand, turning on the tap ignites the boiler and instant hot water is produced.

Your current central heating system probably has a
small water supply tank in the loft. This can also be got rid of, if the system is pressurised as part of the boiler change. It’s simple to do and very common.

So you can get rid of all the water in the loft and forget about ceiling leaks or freezing up in winter. Or you can convert the loft without having to move tanks around.

Because of clever modern design, new boilers especially gas ones, can now be wall hung, condensing combis and
still be a lot smaller than your old one.

Choose the new position carefully, put it where
you want it. Fanned flue boilers, which most now are, can be placed on inside walls and the flue taken round a corner or two to the outside wall. They can be sealed away in cupboards (but what about servicing)? or stuck up in lofts or garages. Oil boilers can even be sited in special cabinets outside.

You should seriously consider upgrading your heating controls. The more gadgets there are, the more efficient the system will be and the more money you will save. There is a lot of info. about controls in our section on central heating.

A-Z of Job Pricing

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