020-803

The Economizer Blockoff Assembly is a critical component designed for high-performance HVAC systems and commercial package units. This assembly serves a vital role in airflow management by sealing off economizer ports to ensure proper static pressure and ventilation integrity. Specifically engineered to work alongside draft inducer motors and combustion air blowers, it prevents air leakage and optimizes the efficiency of the exhaust fan system. Whether you are replacing a worn venter component or retrofitting a heating system, this blockoff assembly ensures that your furnace or rooftop unit maintains the precise draft required for safe and effective operation. Built with durable, heat-resistant materials, it is a necessary part for maintaining the factory-standard performance of your ventilation and combustion air systems.
Type: Draft Inducer / Economizer Blockoff Assembly
Size: Standard HVAC cabinet size
Application: Used in commercial rooftop units, gas furnaces, and ventilation systems to regulate airflow when an economizer is not in use or to block off specific venter motor ports.
Specifications: Durable metal or heavy-duty composite construction; heat-resistant for combustion environments; compatible with Fasco-style draft inducer and exhaust fan configurations.