When a 193 Series unit shows signs of housing erosion or structural fatigue

Physical damage from failed blower wheels

Utilizing a genuine Lochinvar bearing assembly ensures exact tolerances for internal clearances

preventing fuel accumulation in the event of flame failure—a standard requirement for modern commercial HVAC installations

Durable Construction: High-grade aluminum blades resist corrosion and atmospheric fatigue in outdoor environments

Reznor 209423 Kit 320074-702 When a 193 Series unitThe Reznor 209423 Kit is a critical damper motor field replacement kit engineered for specific high efficiency Reznor unit heaters and make up air systems. This HVAC replacement part ensures precise modulation of combustion or outdoor air intake, maintaining optimal static pressure and heat exchanger performance. Designed to replace failing damper actuators in the field, the 209423 kit includes the necessary hardware to restore proper airflow control