ECOAIRTM Ventless Exhaust Hoods allow you to use almost any commercial electric cooking equipment without the need for traditional Type-1 ventilation. Unit comes with a self-contained air filtration system. Ventless hoods are the one which vents air to the outside, a ductless range hood consists of a fan (or a blower, motor) with a charcoal filter that sucks up grease particles, heat, smells, and smoke, filters it, and then recirculates it back into the kitchen. he hood system doesn’t compromise on safety. Either an interlock feature ensures that the equipment under the hood is also turned on and a colour coded lighted alert system lets you know that it is running safely and efficiently. Fire suppression is not included; however, it comes ready for field installation of an Ansul R102 wet chemical system.