What is the primary purpose of an induced draft motor in an HVAC system?

The primary purpose of an induced draft motor in an HVAC system is to remove combustion gases. This type of motor is typically used in gas-fired heating systems, where it creates a negative pressure within the combustion chamber. By doing so, it helps to pull the exhaust gases generated from the burning of fuel out of the system and safely vent them outside the building. This process is crucial for maintaining safety and efficiency, as it prevents the buildup of harmful gases like carbon monoxide within the living space and ensures that the system operates correctly.

The induced draft motor effectively enhances the overall efficiency of combustion processes by facilitating proper air flow and exhaust removal, which also helps to improve the heating system's performance and longevity.