Viessmann Vitodens 100-W Open Vent 32kw
The Viessmann Vitodens 100-W Open Vent 32kW is a powerful and highly efficient boiler, purpose built for larger homes with higher heating and hot water demands. Whether you’re upgrading from an older open vent system or fitting out a property with multiple bathrooms and a sizeable radiator system, this model delivers consistent, reliable performance.
It combines German engineering quality with practical design, featuring Viessmann’s trusted stainless steel heat exchanger for long lasting efficiency. Despite its high output, the unit remains compact and quiet, making it suitable for discreet installation in utility rooms or lofts.
Backed by a warranty of up to 10 years, this boiler offers not just power, but peace of mind.
If your property doesn’t require quite as much output, the Vitodens 100-W 19kw Open Vent and Vitodens 100-W 16kw Open Vent offer the same quality and reliability, with lower capacity better suited for smaller homes or flats. These models still provide excellent efficiency and a compact design, making them ideal for traditional systems with lower heating demand.
Whether you need high performance or something more modest, the Vitodens 100-W range has a model to suit your home perfectly.
Our engineers review of the Viessmann Vitodens 100-W Open Vent 32kw boiler
“The 32kW Vitodens 100-W has become my go-to for larger homes running open vent systems. Just installed one in a big Victorian property with multiple bathrooms, and it didn’t miss a beat.
What impressed me most was the responsiveness. The system heated up quickly, and the output was more than enough to keep everything running smoothly, even during peak demand. You can tell it’s built for performance.
It’s a well thought out boiler, solid components, easy access for servicing and clear wiring layout. Viessmann haven’t cut corners here.
For homeowners upgrading an older open vent system and needing a bit more grunt, this model hits the mark. I’ve already got another install booked in next week.”
Michael – Gas Safe Certified Engineer @ Celsius.