How Much Is a New Boiler? 2026 Price Guide

New Boiler Prices by Type — 2026

The type of boiler you need is the biggest factor in the price. Here's a breakdown of typical installed costs in 2026:

• Combi boiler installed — £1,699 to £2,499. The most popular choice for most UK homes. Heats water on demand with no hot water cylinder needed.
• System boiler installed — £1,849 to £2,699. Suits larger homes with multiple bathrooms. Works with a hot water storage cylinder.
• Regular (heat-only) boiler installed — £1,849 to £2,699. For properties with older heating systems using a feed and expansion tank in the loft.
• Combi conversion (from system/regular) — add £200–£400 to the above, as extra pipework and removal of the cylinder is involved.

These prices include everything — supply and installation of the new boiler, a room thermostat (or Hive smart thermostat), a magnetic system filter (e.g. Fernox TF1), system flush, removal and disposal of your old boiler, and your Gas Safe installation certificate. No call-out charge, no VAT surprises.

New Boiler Prices by Brand

The brand you choose also affects the price. Here's what each brand typically costs installed through Next Gen Boilers Ltd:

• Alpha boilers — from £1,699 installed. Budget-friendly with solid reliability and a 10-year warranty available.
• Baxi boilers — from £1,749 installed. Great mid-range option. Baxi 800 series offers excellent efficiency and a 10-year warranty.
• Viessmann boilers — from £1,999 installed. German-engineered, premium efficiency. Vitodens 050-W is a popular choice.
• Worcester Bosch boilers — from £2,099 installed. The UK's most trusted boiler brand. 8000 Greenstar series with up to 10-year warranty.

All brands we install carry manufacturer warranties of up to 10 years — we register the warranty for you on the day of installation. Budget brands like Alpha offer excellent reliability; premium brands like Worcester Bosch offer extra peace of mind.

What Affects the Cost of a New Boiler?

Several factors can push the price up or down from the base price:

• Like-for-like replacement — cheapest option. Old boiler removed, new boiler fitted in the same position, same pipework used.
• Boiler relocation — adds £150–£500 depending on how far the boiler moves and new pipework required.
• Combi conversion — adds £200–£400 for removing the hot water cylinder, cold water tank and associated pipework.
• Flue extension or repositioning — adds £50–£200 depending on complexity.
• System condition — if your pipework is heavily corroded or sludged, a full power flush may be recommended (£299–£699).
• Number of radiators — generally doesn't affect boiler cost but can affect the time needed for the flush.

We provide a fixed price before we start — so you know exactly what you'll pay before we arrive.

Can I Get Finance on a New Boiler?

Yes — Next Gen Boilers Ltd offers 0% interest-free finance on all new boiler installations. You can spread the cost over 12, 24, 36 or 60 months with no deposit required.

• A £1,699 boiler over 60 months = from £28/month
• A £1,999 boiler over 60 months = from £33/month
• A £2,299 boiler over 60 months = from £38/month

Finance is subject to approval. Apply online or ask our team when you call. You may also qualify for a government boiler grant through the ECO4 scheme if you receive certain benefits or have a low EPC rating.

Frequently Asked Questions