How Much Does a New Boiler Cost in 2026?

If your boiler is old, inefficient or has broken down, you're probably wondering how much a replacement will cost. The good news is that new boiler prices have become more competitive, and with 0% finance options available, a new A-rated boiler is more accessible than ever.

In this guide we break down exactly what you can expect to pay for a new boiler installation in London and the Home Counties in 2026 — including supply, labour, and what's included in the price.

New boiler costs at a glance

Boiler type	Budget	Mid-range	Premium
Combi boiler	From £1,499	From £1,799	From £2,200
System boiler	From £1,799	From £2,100	From £2,600
Heat-only boiler	From £1,649	From £1,950	From £2,400

All prices above include supply of the boiler, full installation, removal of your old boiler, new flue, controls and Gas Safe certification. There are no hidden extras.

What affects the cost of a new boiler?

• Boiler brand and model — Premium brands like Viessmann and Worcester Bosch cost more upfront but offer longer warranties and better efficiency.
• Boiler type — Combi boilers are usually the cheapest to install. System and heat-only boilers may require additional cylinder work.
• Location of the boiler — Moving your boiler to a new location adds pipework costs. A like-for-like replacement is always cheapest.
• Additional work — A power flush, new controls or additional pipework will add to the overall cost.
• Your area — Labour rates in Central London are higher than outer London or the Home Counties.

What's included in an InstallRight Boilers quote?

• Supply of your chosen A-rated boiler
• Full installation by a Gas Safe registered engineer
• Removal and disposal of your old boiler
• New flue installation
• New expansion vessel, pressure gauge and safety valve
• Condensate pipework
• Magnetic filter to protect your system
• Warranty registration with the manufacturer
• Gas Safe certificate

Which boiler brand is best?

Worcester Bosch and Vaillant are consistently rated the UK's most reliable boiler brands. Viessmann offers the best efficiency ratings. For budget options, Baxi and Ideal offer solid reliability at a lower price point.

At InstallRight Boilers we install all major brands and will recommend the right boiler for your home and budget — with no pushy upselling.

How to get a fixed price quote

Getting a quote from InstallRight Boilers takes less than 2 minutes. Simply WhatsApp us or fill in our online form with your property type, number of bedrooms, bathroom count and postcode — and we'll send you a fixed price immediately. No home visit needed for a standard boiler replacement.