The starting number, and what it includes
LMB installations start from £1,900 fitted. That is not a teaser rate that doubles once someone visits your kitchen. It is the genuine price of a straightforward like-for-like combi swap, and it includes the boiler itself, standard pipework and valves, a standard flue, filling loop, system fill and commissioning, removal and disposal of your old boiler, your Gas Safe certificate, the Building Regulations notification, and registration of the manufacturer warranty. If something extra is genuinely needed for your job, it is itemised on the quote before you commit, never discovered on the day.
You can get your own fixed figure in about 90 seconds with the online quote tool, and the price you see is the price you pay for the work specified.
And because guessing games help nobody, here are the totals Bridgend customers actually pay for the combi models LMB fits most, with the warranty each one carries.
| Boiler | Installed price | Warranty |
|---|---|---|
| Baxi 424 | £2,613 | 5 years |
| Baxi 430 | £2,659 | 5 years |
| Baxi 436 | £2,771 | 5 years |
| Baxi 824 | £3,027 | 10 years |
| Baxi 830 | £3,179 | 10 years |
| Baxi 836 | £3,327 | 10 years |
| Vaillant ecoFIT pure 825 | £3,094 | 10 years |
| Vaillant ecoFIT pure 830 | £3,180 | 10 years |
| Vaillant ecoFIT pure 835 | £3,279 | 10 years |
Installed customer totals including VAT, standard installation and a magnetic system filter. Treat them as guide prices: your exact fixed quote takes about 90 seconds online, and the warranty is registered for you on installation day.
What moves the price up
The boiler you choose is the biggest lever. A standard Baxi combi sits at the start of the range, while a top-end Worcester Bosch with the longest warranty costs more, and the warranty length usually tracks the price. Brand snobbery aside, all the brands LMB fits, Baxi, Worcester Bosch, Ideal and Vaillant, are proper boilers with real manufacturer warranties up to 12 years depending on model.
After that, it is the shape of the job. Converting a heat-only system with tanks in the loft to a combi costs more than a swap, because pipework changes and the old kit has to come out. Moving the boiler to a different room adds pipe runs and labour. A flue that has to go up through a roof rather than straight out a wall adds parts and time. Extras like a system filter or a smart thermostat add their own cost, and each is listed separately so you can take them or leave them.
How to compare quotes without getting burned
When you put quotes side by side, check three things. Is the price fixed in writing, or an estimate that can grow? Exactly what is included, especially the flue, the certificate and the Building Regulations notification? And who is actually doing the work, the person quoting or whoever is free that day? With LMB the answers are: fixed, everything listed above, and Lloyd himself, the same engineer behind the firm’s 5.0 Google rating.
Finance is available through our finance partner if you would rather spread the cost, subject to a credit check, and a £100 deposit reserves your installation date.
