Viessmann heating solutions simplify a complex world.
Viessmann is one of the world’s leading manufacturers of efficient, reliable and affordable heating and solar products. Our innovative solutions are simple to install, service and use. Viessmann offers a comprehensive range of German-engineered products, from oil and gas-fired boilers to biomass, solar thermal, hot water heating and more for applications in residential, multi-family, commercial, light industrial, schools, universities, hospitals, municipalities and government buildings.
With a depth of only 285mm (340mm for 35kW model) the Vitodens 100-W OpenVent boiler is perfectly suited for integration into standard kitchen cupboards. It can also be used in a vast number of other applications where there is only limited space available.
The corrosion-resistant stainless steel Inox-Radial heat exchanger with particularly strong walls is extremely durable and achieves efficiency levels of up to 97%.
The boiler’s special design ensures the very low operating noise of 39 dB (A) maximum (26 kW) which is perfectly acceptable even in the kitchen.
With a simple up-grade the Vitodens 100-W Open Vent can operate in weather compensated mode without incurring a costly heating system modification. Weather compensation acts like an autopilot as it detects outside temperature changes and automatically adjusts the flow temperature of the boiler, thus achieving gas savings of up to 12%.
The Vitodens 100-W Open Vent comes with a standard 5 year parts and labour warranty. The stainless steel Inox-Radial heat exchanger features a 10 year anti corrosion warranty. Ideal for Y and S plan heating systems Whilst being specifically designed for open vent heating systems, the Vitodens 100-W Open Vent is suitable for sealed systems using an additional expansion vessel and safety valve. The boiler also shares the various flue options available for the Combination and System models of the Vitodens 100-W gas condensing boiler range.
* Viessmann Trained Installers can offer their customers an extended warranty option up to 10 years.