Affordable does not mean cheapest
No firm can honestly call itself the cheapest, because nobody sees every quote in the county, and this page will not pretend otherwise. What a firm can do is make its pricing checkable: publish the guide numbers, fix the quote in writing before any work starts, and itemise anything extra so you choose it knowingly. That is the version of affordable that does not fall apart after the van leaves.
The fixed quote matters more than the headline number. A vague estimate that grows mid-job is how a cheap quote becomes an expensive one, and it is the single most common pricing complaint in the trade. With LMB the price is agreed before work starts, and the reviews on this site repeatedly mention jobs coming in at the figure quoted.
The prices, in the open
These are LMB’s real guide prices, the same figures used across this site and in Lloyd’s own advertising. Installed boiler totals include VAT, standard kit and labour, and a magnetic system filter. Your exact fixed quote takes about 90 seconds with the online tool.
| Job | Guide price |
|---|---|
| Straight combi swap (baseline) | from £1,900 |
| Baxi 400 series combi, installed | £2,613 to £2,771 |
| Baxi 800 series combi, installed | £3,027 to £3,327 |
| Vaillant ecoFIT pure combi, installed | £3,094 to £3,279 |
| Annual boiler service | £84 |
| Power flush (standalone) | £499 |
| Power flush with a new boiler install | £350 |
| Chemical inhibitor and clean | £120 |
| Hive smart thermostat, fitted | £130 |
| Thermostatic radiator valves | £45 per radiator |
| Landlord CP12 certificate | fixed price confirmed before booking |
Guide prices. Every job gets a fixed written quote agreed before work starts, and anything beyond the standard job is itemised so nothing is discovered on the day.
How the cheapest quote becomes the dearest job
The pattern is depressingly consistent across the trade. The rock-bottom quote skips the things you cannot see on the day: the Building Regulations notification that you will need when you sell the house, the manufacturer warranty registration that turns a ten year cover into none at all, the system clean that stops sludge eating the new boiler, the certificate that proves the work was done legally. None of those omissions show up at handover. All of them show up later, with a bill attached.
Then there is the structural stuff: an unregistered installer working on gas is a criminal matter, not a bargain. The gas engineer hiring guide covers the checks that take five minutes and filter out the riskiest quotes entirely.
What you get for the money with LMB
A Gas Safe registered, City & Guilds qualified, Baxi Approved engineer who quotes the job himself and does the work himself. A fixed written price agreed before work starts. Certificates, Building Regulations notification and warranty registration handled as standard on installations. And a public track record you can read before you spend a pound: 5.0 from 197 Google reviews, where "came to same total as quoted" and "reasonable price" appear in the customers’ own words.
If you want the affordable option, define it the checkable way: published guide prices, a fixed quote, and proof other people got what they paid for. Get your own fixed figure in about 90 seconds with the online quote tool, or call 07712 646488.
