BAXI 624 24kW Combi Boiler with Horizontal Flue

The BAXI 624 24kW Combi Boiler with Horizontal Flue is a compact and highly efficient heating package designed to provide dependable central heating and instant mains-pressure hot water for apartments and small to medium-sized homes. Supplied with a horizontal flue kit, this complete package offers everything required for a straightforward installation while delivering reliable everyday performance and excellent energy efficiency.

Part of the trusted BAXI 600 Combi 2 range, the BAXI 624 features a durable stainless steel heat exchanger, intelligent condensing technology, and a lightweight cupboard-fit design. Compatible with modern heating controls, it offers efficient operation, lower running costs, and long-term reliability, making it an ideal replacement for older combi boilers or a smart choice for new installations.

Key Features

• 24kW 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
• Digital display with fault diagnostics
• OpenTherm compatible
• NOx Class 6
• Lightweight and installer-friendly
• 7-Year manufacturer's warranty

Ideal for Small to Medium Homes

The BAXI 624 24kW Combi Boiler is perfectly suited for apartments, flats, and small to medium-sized homes with one bathroom. By supplying central heating and domestic hot water directly from the mains, it removes the need for a separate hot water cylinder or cold water storage tank, helping maximise available living space.

Efficient Heating & Instant Hot Water

Delivering 24kW domestic hot water output and a 10.2 litres per minute flow rate (Δ35°C), the BAXI 624 provides consistent hot water for showers, taps, and everyday household use while maintaining reliable heating performance.

Its advanced condensing technology helps improve seasonal efficiency, reduce fuel consumption, and lower household energy bills without compromising comfort.

Compact Design & Easy Installation

Designed to fit neatly inside a standard kitchen cupboard, the BAXI 624 is both lightweight and installer-friendly, making it an excellent choice for replacement installations.

Dimensions

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

The included horizontal flue kit ensures compatibility and simplifies installation, providing a complete heating solution straight out of the box.

Energy Efficient Performance

The BAXI 624 is ErP A Rated for heating and hot water efficiency. Combined with its stainless steel heat exchanger and intelligent condensing technology, it delivers reliable comfort while helping reduce gas usage and operating costs throughout the year.

Smart Heating Control Compatibility

Compatible with OpenTherm heating controls, the BAXI 624 allows improved boiler modulation, more accurate temperature management, and enhanced energy efficiency when paired with compatible smart thermostats.

Reliable Performance & Easy Maintenance

Built with high-quality components including a stainless steel heat exchanger, digital diagnostics, and the convenient Easy-Fill permanent filling link, the BAXI 624 is engineered for dependable long-term performance while making servicing and maintenance straightforward for heating engineers.

Warranty & Peace of Mind

The BAXI 624 24kW Combi Boiler with Horizontal Flue includes a 7-Year manufacturer's warranty, providing homeowners with added confidence and long-term peace of mind when installed and registered in accordance with the manufacturer's requirements.

Why Choose the BAXI 624 24kW Combi Boiler with Horizontal Flue?

• Complete boiler and horizontal flue package
• Efficient 24kW combi boiler
• Natural Gas compatible
• 10.2 L/min domestic hot water flow rate
• Stainless steel heat exchanger
• Compact cupboard-fit design
• OpenTherm compatible
• Easy-Fill permanent filling link
• Instant mains-pressure hot water
• 7-Year manufacturer's warranty