The vaillant ecotec plus 430 open vent boiler delivers 30000w of heating power in a compact, cupboard-sized design engineered for flexible installation. The rear flue option provides flexible placement throughout your property without compromising performance. Premium aluminium heat exchanger construction and high-grade components ensure reliable operation across demanding residential applications. The straightforward backlit display delivers intuitive control and system monitoring. Intelligent modulation technology automatically reduces output to 16% of maximum capacity when full heating power is not required, minimising fuel consumption and operating costs. Hand-built in vaillant's award-winning derbyshire manufacturing plant, each unit is backed by a 5-year guarantee. Features & benefits: compact cupboard-sized design with rear flue option for flexible installation positioning. 30000W heating output with intelligent modulation down to 16% for fuel efficiency. Premium aluminium heat exchanger delivering reliable heat transfer and durability. Backlit display for intuitive system control and monitoring. Compatible with vsmart smartphone app and wide range of heating control options. Tested with up to 20% hydrogen blend as part of hydeploy future-fuel project. 5-Year guarantee included for long-term protection and reliability. Dimensions hxwxd : 600 x 375 x 320mm.