Thermo roof fans

Thermo roof fans - Systemair

Our Thermo roof fans provide one of the widest ranges in the market. These roof fans can handle kitchen and industrial exhaust air up to 120°C air temperature, which ensures a safe and comfortable indoor climate.

Air volume from 540l/s – 15,555l/s (1940m³/h – 56,000m³/h)

Thermo roof fans

DVN - Systemair



Casing manufactured from sea water resistant aluminium. Base frame with integrated inlet cone, manufactured from galvanised sheet. Includes bird guard manufactured from powder coated, galvanised steel.

DVNI with 50 mm acoustic and thermal mineral wool insulation.


Voltage controllable IEC standard motors and frequency converter controllable IE2 standard motors.

Impeller geometry

Radial impeller with backward curved blades.

Output control

Single phase motors can be speed controlled via a 5-step transformer. In addition, three-phase motors where indicated are step speed controllable via star-delta switching. IE2 motors can only be controlled via frequency converter.

Motor protection

Integrated thermal contacts or PTC thermistors with cables for connection to a motor protection switching device.