Bayliss Autovents have been produced since 1964 by our family business in Ashbourne, the gateway to the Peak District in Derbyshire. We are proud of the reputation we have for design, quality, reliability and service. We offer a range of autovents that covers almost any automatic ventilation requirement you may have.

What does a Bayliss Autovent do?

It opens and closes a hinged vent automatically using energy from the warmth of the sun or the surrounding air. The hotter it gets, the wider it opens the vent.