Vaillant ecoFIT Sustain 430 Heat Only Boiler 0010025276 The ecoFIT sustain range of open vent boilers offers an excellent size-to-output ratio, giving great comfort whilst ensuring a small footprint. The range features 15, 18 and 30kW models to suit all types of homeowner and tenant properties. Features & benefits • Compact, cupboard fit solution – A smaller boiler footprint (702mm x 390mm x 295mm) means the ecoFIT Sustain offers siting flexibility, including cupboard fit • Familiar Vaillant diagnostics - Offers quick and easy maintenance for your maintenance team • Patented condensate trap - Easy install with a safety back-up • Fully modulating low NOx burner and fan - For improved energy efficiency • Built-in two-stage frost protection - To ensure optimal performance all year round • Modulation range up to a 1:5 - Ensuring low energy consumption and maximum efficiency • Clear bright LCD display - Easy to read boiler wherever it is sited • Up to 10m flue lengths - Allows maximum flexibility for location of the boiler • Controls compatibility - The wide range of Vaillant room thermostats, wired & wireless controls including the vSMART™ app-based controls with weather compensation to lower running costs for tenants • ErP 'A' Rated product - Suitable for both refurbishment and new build with lower running cost to reduce heating bills