Navien 500mm Flue Extension 60/100

The Navien NCB300-28K Combination Boiler is a compact, 28kW gas condensing combi boiler ideal for smaller properties. Offering high-performance heating and reliable hot water delivery, it supports up to one shower and provides a DHW flow rate of up to 16 l/min. With a 5-year warranty and flexible installation options, this boiler combines efficiency with exceptional reliability.

The Navien NCB500-1S+/32k Combination Boiler offers a powerful 32kW output, perfect for homes with one shower and a tap. With an ErP A+ energy efficiency rating, smart technology features, and compact dimensions, this boiler provides ultimate comfort and convenience. Hydrogen-ready with stainless steel heat exchangers, it’s future-proofed for durability and comes with a 10-year parts and labour warranty for peace of mind.

The Navien NCB500-2S/37K Combination Boiler offers a robust 37kW output, ideal for homes with two showers. With an ErP A+ energy efficiency rating and smart technology, it provides exceptional heating performance and hot water comfort. Compact enough to fit in a kitchen cupboard, it features stainless steel heat exchangers, smartphone compatibility, and a 10-year parts and labour warranty for long-term peace of mind.

The Navien NCB300-37K Combination Boiler delivers powerful heating and hot water performance with a 37kW output, making it ideal for homes with up to two showers. This compact gas condensing combi boiler offers efficient heating and DHW flow rates up to 21.3 l/min. With flexible installation options and a 5-year warranty, it ensures reliability and comfort for medium-sized homes.

The Navien NCB500-2S/41K Combination Boiler offers a powerful 41kW output, perfect for homes with two showers and a tap. Featuring an ErP A+ energy efficiency rating and smart technology for remote control, it provides excellent heating and hot water performance. Compact and futureproofed with hydrogen-ready technology, it includes a 10-year parts and labour warranty, ensuring long-term reliability and peace of mind.

The Navien NCB300-41K Combination Boiler offers a powerful 41kW output, perfect for homes with two showers and a tap running simultaneously. This compact gas condensing combi boiler delivers reliable heating and hot water with a DHW flow rate up to 23.6 l/min. With flexible installation options and a 5-year warranty, it's ideal for larger homes seeking efficiency and performance.

The Navien NCB700-2S+/42K Combination Boiler delivers an impressive 42kW output, ideal for large properties with two showers and a tap. Capable of supplying hot water to three bathrooms simultaneously, it features industry-leading DHW flow rates of up to 24.1 l/min. With an innovative recirculation system to minimise water wastage and a 12-year warranty, this boiler is perfect for maximising comfort and efficiency in larger homes.

The Navien NCB700-3S/54K Combination Boiler delivers an exceptional 54kW output, making it perfect for large homes with three showers. With industry-leading DHW flow rates of up to 31 l/min, it can supply hot water to multiple bathrooms simultaneously. Featuring a recirculation system to reduce water wastage and a 12-year warranty, this high-performance boiler is designed for maximum efficiency and comfort.