Welcome

Bayliss Autovents have been produced since 1964 by our family business in Ashbourne.We offer a range of autovents that covers almost any automatic ventilation requirement you may have.

About Us

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.
An Autovent 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. A strong metal tube contains a mineral wax which expands with heat. This pushes a piston which opens the vent via a balanced linkage. As the temperature drops, the wax shrinks and a strong stainless steel spring closes the vent and resets the piston.

Services

The Autovent is manufactured using the very best corrosion resistant material including stainless steel, brass and aluminium. Great care is taken to avoid electrolytic corrosion which can occur in the warm and wet conditions in which the Autovents work.


The Autovent units are designed and tested to last for many years. However, each and every part of a Bayliss Autovent can be serviced or replaced should the need arise. Our products are not "throw away" items and as evidence of this, we still carry some spares for the earliest models we made.

Specialist Services

Comprehensive illustrated fitting instructions are included with every Autovent, together with a pack containing the necessary fixing screws.


All our products are guaranteed for two years. Provided the unit has not been tampered with or damaged, we will repair it free of charge if it is returned to us within the guarantee period.


Bayliss Autovents have been designed by engineers who have been making automatic vent controls for over 30 years, and incorporates all the knowledge and experience gained during this time. All Bayliss Autovents have a strong stainless steel spring to give a firm closing force, and this virtually eliminates any risk from wind damage.

The unit gives a balanced lifting action in the middle of the vent and this avoids any sideways thrust on the vent which can twist it or even push it out of position. Because we design, make the component and assemble them 'in house', we are able to offer special versions of the Bayliss Autovent. Variations can include alternative finishes and colours, different operating temperature ranges and even special designs for specific applications. For further details, please visit our website, or call on 01335 342981.