The Vaillant ecoFIT Pure 418 is a highly adaptable 18kW regular boiler specifically engineered for residential properties utilising traditional open-vented heating setups. Boasting an ultra-compact footprint, this heat-only unit is designed to fit discreetly inside a standard kitchen cupboard. The core of the system is a high-specification aluminium heat exchanger equipped with four-sided cooling and water agitation, which significantly reduces thermal stress and extends the operational lifespan of the boiler.

Installation flexibility is a primary focus for this model, offering both top and rear flue configurations to accommodate complex pipework routing. Tradespeople benefit from the accessible layout, which allows all major internal components to be serviced or replaced entirely from the front of the unit. The boiler features automated purging assistance to streamline the commissioning phase, alongside recognisable Vaillant fault codes displayed on a bright, clear LED interface. With an ErP A-rating and a 94% efficiency profile, this Quiet Mark approved boiler provides a dependable, low-maintenance solution for conventional heating upgrades.

Q: What are the physical dimensions of this heat-only boiler?
A: The compact casing measures 602mm in height, 375mm in width and 295mm in depth.

Q: Can the flue be routed through the rear of the unit?
A: Yes, it is fully compatible with both rear and top flue options up to 10 metres in length.

Q: How does the heat exchanger manage thermal expansion?
A: It utilises unique four-sided cooling and internal water agitation to drastically reduce stress on the metalwork.

Q: Is the digital display visible in dark environments?
A: The unit features a bright LED display specifically designed to ensure clear visibility in poorly lit installation areas.