BAXI 436 36kW Combi Boiler with Horizontal Flue

The BAXI 436 36kW Combi Boiler with Horizontal Flue is a premium heating package designed for larger homes with higher hot water demands. Combining the powerful BAXI 436 Combi 2.1 with a horizontal flue kit, this complete solution delivers efficient central heating and exceptional mains-pressure hot water, making it ideal for busy households with multiple bathrooms.

Powered by advanced condensing technology, the BAXI 436 features a durable stainless steel heat exchanger, robust brass hydraulic components, and OpenTherm compatibility for improved efficiency and comfort. Its compact cupboard-fit design also makes installation simple, even where space is limited.

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
• Brass hydraulic components
• Compact cupboard-fit design
• OpenTherm compatible
• External analogue pressure gauge
• Digital display with fault diagnostics
• NOx Class 6
• Solar compatible
• Hydrogen blend ready (20%)
• 5-Year manufacturer's warranty

Ideal for Larger Homes

The BAXI 436 36kW Combi Boiler is designed for larger homes with one or two bathrooms where higher domestic hot water performance is required. It provides central heating and hot water directly from the mains, removing the need for a separate hot water cylinder while delivering reliable performance throughout the home.

High Hot Water Performance

Delivering a 36kW domestic hot water output and an impressive 15.0 litres per minute flow rate (Δ35°C), the BAXI 436 comfortably supplies hot water to showers, baths, and taps with excellent pressure and consistency.

Its advanced condensing technology maximises efficiency while helping reduce energy consumption and running costs without compromising comfort.

Compact Design & Easy Installation

Despite its higher output, the BAXI 436 maintains a compact footprint, allowing it to fit neatly inside a standard kitchen cupboard.

Dimensions

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

The included horizontal flue kit provides a complete installation package, making it suitable for both replacement projects and new heating systems.

Energy Efficient Performance

The BAXI 436 is ErP A Rated and utilises modern condensing technology together with OpenTherm compatibility to optimise boiler modulation, reduce gas consumption, and maintain excellent seasonal efficiency.

The boiler is also Hydrogen Blend Ready, supporting gas supplies containing up to 20% hydrogen, helping to future-proof your heating system.

Smart Heating Control Compatibility

Compatible with OpenTherm smart thermostats, the BAXI 436 enables more accurate temperature control and improved energy efficiency, allowing homeowners to enjoy greater comfort while reducing heating costs.

Reliable Performance & Easy Maintenance

Engineered with a stainless steel heat exchanger, durable brass hydraulic block, and an installer-friendly internal layout, the BAXI 436 is built for dependable long-term performance.

Its external pressure gauge and accessible components make routine servicing and maintenance quick and straightforward.

Warranty & Peace of Mind

The BAXI 436 36kW Combi Boiler with Horizontal Flue includes a 5-Year manufacturer's warranty, giving homeowners confidence in the long-term reliability and quality of their heating system when installed in accordance with the manufacturer's requirements.

Why Choose the BAXI 436 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 design
• OpenTherm compatible
• Hydrogen Blend Ready (20%)
• Instant mains-pressure hot water
• 5-Year manufacturer's warranty