The Baxi
400.
A 18kW regular boiler from Baxi — installed in a single day by Gas Safe registered engineers.
Built for real homes.
Not showrooms.
The Baxi 400 18kW is designed to work quietly, efficiently, and reliably — for years to come.
- Cupboard Fit
- Quiet Operation
- 18kW heat output — Regular boiler
- 18kW central heating output
- 5 year manufacturer warranty
- 93% ErP efficiency rating
One price.
Everything covered.
No surprise add-ons. Your quote covers everything needed for a complete installation that meets all gas safety regulations, carried out by Gas Safe registered engineers.
Price and installation time varies depending on your installation requirements. Answer a few quick questions to get your exact fixed price.
Get your free quoteThe numbers
that matter.
Baxi 400 18kW
The Baxi 400 Regular is a no-nonsense heat-only boiler built for straightforward replacements in homes that already have a tank and cylinder setup. Lightweight and compact, it's easy for engineers to handle and fit, and its simple design means servicing is quick and fuss-free.
It's particularly well suited to older properties where upgrading to a combi isn't practical or cost-effective. A-rated efficiency helps keep running costs down, and the top or rear flue options make it a flexible like-for-like swap for most standard boiler positions.
Quiet in operation and backed by a 5-year parts and labour warranty.
Don't let cost get
in the way of warmth.
Spread the cost of your new boiler over monthly payments that fit your budget. Available through iDeal4Finance — apply in minutes.
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