The Sentinel® unit ventilator is the perfect solution for schools that have to improve the indoor air quality of their classrooms. It operates in conjunction with a school’s central chiller/boiler plant and is available in five models. Airedale specifically designed and engineered the Sentinel to provide the proper amount of fresh air ventilation, and to enable schools to minimize their energy consumption. Available in 30, 40, 50, and 60 MBH of cooling.