BAXI 824 24kW Combi Boiler with Horizontal Flue

The BAXI 636 36kW Combi Boiler with Horizontal Flue is a premium heating package designed to provide exceptional central heating performance and high-flow mains-pressure hot water for larger homes. Supplied with a horizontal flue kit, this complete package offers everything required for a straightforward installation, making it an excellent choice for replacement boilers and new heating systems alike. Built as part of the trusted BAXI 600 Combi 2 range, it combines energy efficiency, reliability, and powerful hot water performance in a compact cupboard-fit design.

Featuring a durable stainless steel heat exchanger, intelligent condensing technology, and OpenTherm compatibility, the BAXI 636 is engineered to deliver dependable comfort while helping reduce energy consumption. Its digital display, Easy-Fill permanent filling link, and installer-friendly layout make servicing and operation simple for both homeowners and heating engineers.

Key Features

• 36kW Natural Gas Combination (Combi) Boiler
• Includes Horizontal Flue Kit
• Fuel Type: Natural Gas
• Instant mains-pressure hot water
• No separate hot water cylinder required
• ErP A Rated efficiency
• High-efficiency condensing technology
• Stainless steel heat exchanger
• Compact cupboard-fit design
• Easy-Fill permanent filling link
• OpenTherm compatible
• Digital display with fault diagnostics
• NOx Class 6
• Lightweight installer-friendly design
• 7-Year manufacturer's warranty

Ideal for Larger Homes

The BAXI 636 36kW Combi Boiler is designed for larger homes with one or two bathrooms where higher domestic hot water demand is expected. It delivers central heating and hot water directly from the mains, removing the need for a separate hot water cylinder while providing excellent water pressure and everyday convenience.

Powerful Heating & High Hot Water Performance

With a 36kW domestic hot water output and an impressive 15.0 litres per minute flow rate (Δ35°C), the BAXI 636 delivers fast and consistent hot water for multiple household demands while maintaining reliable central heating.

Its advanced condensing technology helps maximise seasonal efficiency, reducing gas consumption and lowering energy bills without compromising performance.

Compact Design & Easy Installation

Despite its powerful output, the BAXI 636 maintains a compact cupboard-fit design, making it suitable for installation in kitchens, utility rooms, and other areas where space is limited.

Dimensions

• Height: 700mm
• Width: 395mm
• Depth: 285mm

The included horizontal flue kit provides a complete installation package, simplifying the installation process and ensuring compatibility from the outset.

Energy Efficient Performance

Rated ErP A for heating and hot water efficiency, the BAXI 636 uses intelligent condensing technology to maximise efficiency while maintaining excellent comfort levels throughout the year.

Its modern design helps homeowners reduce fuel consumption and operating costs while delivering dependable heating and hot water whenever needed.

Smart Heating Control Compatibility

The BAXI 636 is compatible with OpenTherm smart heating controls, enabling more accurate temperature management, improved boiler modulation, and enhanced energy efficiency when paired with compatible thermostats.

Reliable Performance & Easy Maintenance

Engineered with a stainless steel heat exchanger, digital diagnostics, and the convenient Easy-Fill permanent filling link, the BAXI 636 is built for dependable long-term performance while making installation, servicing, and maintenance quick and straightforward for heating professionals.

Warranty & Peace of Mind

The BAXI 636 36kW Combi Boiler with Horizontal Flue is supplied with a 7-Year manufacturer's warranty, offering homeowners long-term confidence and dependable after-sales support when installed and registered in accordance with the manufacturer's guidelines.

Why Choose the BAXI 636 36kW Combi Boiler with Horizontal Flue?

• Complete boiler and horizontal flue package
• Powerful 36kW combi boiler
• Natural Gas compatible
• 15.0 L/min domestic hot water flow rate
• Stainless steel heat exchanger
• Compact cupboard-fit dimensions
• OpenTherm compatible
• Easy-Fill permanent filling link
• Instant mains-pressure hot water
• 7-Year manufacturer's warranty