Baxi 800 836 36kW Gas Combi 2 Boiler – 7814306

The Baxi 836 Combi Boiler combines quiet operation, compact dimensions, and high performance, making it suitable for installation anywhere in the home. At just 290 mm deep, it fits neatly into a standard kitchen cupboard and features built-in pipework within the casing for a tidy finish. Every model comes with an Adey MagnaClean Micro2 system filter, helping to protect both the boiler and the wider heating system.

For convenience, the Baxi 800 is fully compatible with the Baxi uSense smart thermostat, allowing you to control heating and hot water directly from your smartphone or tablet. Certified to operate with up to 20% hydrogen, it runs on natural gas or LPG without the need for a conversion kit.

Designed for reliable performance all year round, it features a pre-heated siphonic condensate trap to help prevent freezing in winter, while the Easy-Fill permanent filling link makes topping up system pressure simple—no engineer call-out required.

Key Features:

• Compatible with Baxi uSense smart heating controls
• Designed for homes with multiple bathrooms or high hot water demand
• Compact cupboard fit – easily fits inside a standard kitchen cupboard
• Lightweight for easier handling and installation
• Pre-heated siphonic condensate trap helps prevent frozen pipes in winter
• Runs on natural gas or LPG – no conversion kit required
• Hydrogen-ready (certified to operate with up to 20% hydrogen blend)
• Can be installed with a hot water cylinder (e.g., Baxi Cylinder or Megaflo Eco Cylinder)
• Built with a durable brass hydraulics block
• Stainless steel heat exchanger for reliable performance and long lifespan
• Includes a built-in stand-off frame for tidy installation
• OpenTherm certified for advanced control compatibility
• Combined PrV with separate drain for added safety
• Supplied with an Adey MagnaClean Micro2 filter to protect your boiler and heating system (Required for the 10-year warranty – must be installed and registered with the boiler at the same time)
• Backed by a parts and labour warranty of up to 10 years (T&Cs apply)