Boiler Installation & Replacement
New installs and like-for-like swaps, typically over 1-3 days
Pros
- A new A-rated boiler is typically far more energy-efficient than an old one
- Often comes with a manufacturer warranty (commonly 5-10 years)
Cons
- Upfront cost varies significantly — always compare itemised quotes, not just headline prices
About Boiler Installation & Replacement
Whether you’re replacing an old, inefficient boiler or installing one for the first time, all UK gas boiler installation work must legally be carried out by a Gas Safe registered engineer. Typical installation costs vary widely depending on boiler type, output size, brand and how much pipework/flue work is involved — always get more than one itemised quote before committing.
How this works
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See if boiler installation & replacement suits your home
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We look for a heating engineer who covers your area
Frequently asked questions
How do I know an installer is legally allowed to do gas work?
Ask for their Gas Safe Register ID and check it directly on gassaferegister.co.uk — this is the only body legally authorised to register gas engineers in the UK, and using an unregistered installer for gas work is against the law.
Are you a boiler installer yourselves?
No — Best Boiler Deals is an independent comparison and information service. We recommend always checking an installer’s Gas Safe Register ID directly before any gas work begins.
Is all the pricing on this site guaranteed?
No — costs mentioned are typical ranges reported by trade sources, not fixed quotes. Always get itemised quotes from more than one Gas Safe registered installer before committing.
What happens after I request a quote?
We look for a heating engineer who covers your area to arrange a proper site survey — there’s no obligation to proceed with any quote.
Request a boiler quote
Free and no obligation. Tell us what you need and where, and we will look for a heating engineer who covers your area.