Classification Information
airflow balancers in the nature of calibrated vents for heating and cooling installations; combination HVAC units providing heat recovery, energy recovery, airflow balancing, air filtration and ozonation; air filtering units for removing dust, smoke, and allergens from the air; energy recovery ventilators; heat recovery ventilators; HVAC units for commercial buildings; HVAC systems for residential buildings; ozonators
Environmental Control Apparatus