The Baxi
600.
A 18kW system boiler from Baxi — installed in a single day by Gas Safe registered engineers.
Built for real homes.
Not showrooms.
The Baxi 600 18kW is designed to work quietly, efficiently, and reliably — for years to come.
- Compact Design
- Certified OpenTherm technology
- 18kW heat output — System boiler
- 18kW central heating output
- 7 year manufacturer warranty
- 94% 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 600 18kW
The Baxi 600 System is a compact, efficient system boiler for homes where a combi isn't the right fit — typically properties with a higher hot water demand that benefits from a cylinder. All the key heating components are built in, so installation is cleaner and quicker than a traditional regular boiler setup.
It fits neatly inside a cupboard, runs quietly, and is compatible with Baxi uSense smart controls for app-based temperature management. OpenTherm certified for improved efficiency with compatible thermostats, and A-rated for both heating and hot water.
Backed by a 7-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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