Baxi Baxi 800

At a glance

• Configurations: Combi, System
• Best suited to: Small to medium homes, especially tight cupboard installs
• Fuel: Mains natural gas (some variants are LPG-convertible, check the manufacturer’s data).

Worth knowing on site

• Compact, light casing with a bottom-centre connection layout.
• Combi and system variants; packs often bundle a filter, wireless thermostat and flue.

On the tools

As Baxi's flagship numbered range, the 800 is a common pick for tight cupboard installs thanks to its compact, light casing. Bundled packs (filter, wireless thermostat, flue) are often mentioned by engineers as a reason quoting and ordering for an 800 job is comparatively quick.

Variants and configuration

It is available in combi and system form, with a bottom-centre connection layout that differs from some rival brands, worth noting when planning pipework on a swap. Always confirm the exact configuration and output from the data plate before ordering a bundled pack.

Where it sits in the range

The 800 sits above the 600 in Baxi's current numbered line-up and represents the brand's newest, most feature-rich domestic combi and system range. It commonly replaces older Baxi boilers or rival mid-range appliances on straightforward like-for-like swaps.

Finding the manual and the data plate

For the exact outputs, gas rate, dimensions and commissioning figures, work from the appliance’s data plate and the manufacturer’s installation and servicing instructions. The GC (Gas Council) number and serial are on the data plate, usually behind the front panel or on the underside. Baxipublishes its manuals and support at Baxi support.