Baxi installers · Gas Safe registered
Get a fixed-price quote for a new Baxi boiler online, choose your installation date and have a Gas Safe registered engineer fit it. We install Baxi’s 400, 600 and 800 series combis, plus system and heat-only models.
Replacing your boiler with Baxi
Baxi started in Preston, Lancashire, in 1866 and still builds boilers there today. Now part of BDR Thermea Group, it is one of the UK’s longest-established heating brands and a common choice for straightforward replacements.
The Baxi 800 Combi 2 is designed to fit kitchen cupboards just 290mm deep and comes with an Adey MagnaClean Micro2 filter to protect your heating system. The 400 and 600 series offer simpler, lower-cost options, and Baxi also makes system and heat-only boilers for homes with a cylinder.
Baxi is also the name behind the old Bermuda back boiler. If you still have one, we can remove it along with the fire and fit a modern wall-hung boiler in its place.
Baxi’s numbered series make it easy to compare: the higher the number, the more features you get.
| Model | Type | Best for |
|---|---|---|
| Baxi 400 Combi 2.1 | Combi | Lightweight, lower-cost option for smaller homes |
| Baxi 600 Combi 2 | Combi | Everyday combi swaps in mid-sized homes |
| Baxi 800 Combi 2 | Combi | Fits 290mm-deep cupboards; includes a MagnaClean Micro2 filter |
| Baxi 600 and 800 System 2 | System | Homes with an unvented or vented cylinder |
| Baxi 400, 600 and 800 Heat | Heat-only (regular) | Homes keeping loft tanks and a cylinder |
Outputs and availability depend on your home, so your online quote only shows the Baxi models that suit it.
A Baxi installation is priced on the series, the output and the work your home needs. Across all brands, like-for-like combi swaps start from £1,759 fitted; replacing a Bermuda back boiler or fitting a System 2 boiler with a new cylinder takes more work and costs more.
Every quote is fixed, so nothing is added after the survey. You can also spread the cost: as an example, a £1,799 boiler over 10 years at 9.9% APR works out at £23.26 a month, subject to status.
The 800 Combi 2 is built to slot into standard kitchen cupboards, so it is a neat option where the boiler sits behind a door.
Older homes with a Baxi Bermuda or similar back boiler can switch to a wall-hung Baxi combi or system boiler, freeing up the fireplace.
If you want to keep stored hot water, a Baxi System 2 boiler with an unvented cylinder gives strong flow to several taps at once.
It depends on the series, output and work involved. Across all brands, like-for-like combi swaps start from £1,759 fitted, and your online quote shows a fixed price for the Baxi boilers that suit your home.
Baxi boilers are made in Preston, Lancashire, where the company started in 1866.
In most cases, yes. The Baxi 800 Combi 2 is designed to fit cupboards 290mm deep, and we check the space and clearances before confirming your installation.
Yes. We remove the back boiler and the fire in front of it, make the old flue and pipework safe and fit a new wall-hung boiler in a better position.
Answer a few questions about your home, compare fixed-price Baxi boilers and book the installation date that suits you – all online.