How to Avoid a Cowboy Boiler Installer in Manchester

Why this matters more than you think

A bad boiler install isn't just annoying — it's dangerous. An incorrectly fitted gas boiler can leak carbon monoxide, invalidate your home insurance, and cost more to fix than if you'd paid a proper engineer in the first place. Every year, Gas Safe Register investigates thousands of illegal gas work reports across the UK, and Greater Manchester's older housing stock (a lot of pre-1980s combi retrofits) makes it an easy target for unqualified installers cutting corners.

1. Check they're actually Gas Safe registered — don't just take their word for it

It's a legal requirement in the UK under the Gas Safety (Installation and Use) Regulations 1998: anyone who works on gas boilers, cookers or fires must be on the Gas Safe Register. Ask for their Gas Safe ID card and cross-check it yourself at gassaferegister.co.uk — it takes 30 seconds and confirms exactly which categories of gas work they're licensed for (some engineers are only certified for cookers, not boilers).

Every plumber and gas engineer on ManchesterPros with a "Gas Safe Registered" badge has had this checked before being listed — but always verify independently for any work involving gas.

2. Get a written, itemised quote — never a verbal "ballpark"

A proper quote should break down: the boiler make/model being fitted, labour cost, any parts (flue, controls, filter), and how long the job will take. If someone gives you a single round number with no breakdown, or pressures you to decide "today only," that's a red flag. Manchester boiler installs typically run £2,000–£3,400 for a standard combi supply-and-fit — if a quote is dramatically below that, ask why.

3. Ask what happens after the install

A legitimate installer registers the work with Gas Safe (they're legally required to notify Building Control within 30 days) and gives you a Building Regulations compliance certificate. If they can't explain this, or say it's "not necessary," walk away — you'll need that certificate if you ever sell the house.

4. Read recent reviews, not just the star rating

A 4.8 average from 200 reviews five years ago tells you less than 10 reviews from the last six months. Look for specific detail — did they turn up on time, was the quote accurate, did they clean up after themselves — rather than generic five-star praise.