Cars parked in an underground parking structure emit carbon monoxide (CO) and other noxious fumes into the atmosphere. There is a need for an efficient ventilation system to remove these toxins, circulate fresh air into the car park, and assist firefighters in the case of a fire emergency. jet Fans work with the principal of pushing the air masses at discharge opening with the high air velocity they create and mobilize with the induction principle.

Ductless designs use jet fans to dilute and remove contaminants and control smoke. The fans move air towards the exhaust area when installed on the ceiling. This creates a continuous flow, avoiding the creation of stagnant zones where air is trapped.

Gmcair axial jet fans are used in daily ventilation as well as being able to operate in double speed in case of fire. Engines with a rotational speed of 1450 rpm in daily use reaches 2900 rpm with the sign of carbon monoxide and smoke sensors in case of fire. Axial jet fans are manufactured in F300 ( 300 C° / 120 min ) and F400 ( 400 C° / 120 min) strength classes according to EN 12101-3