Lennox 99G99 Blower Wheel 322838-754 it breaks the circuit to

it breaks the circuit to the gas valve or heating elements as a safety precaution while keeping the fan running to dissipate excess heat

Optimized Ignition Performance: High-energy spark capability ensures rapid gas ignition

Reliable Time Delay: The 45-second thermal expansion relay is compensated for ambient temperature variations

Enhance your system's efficiency and operational uptime with this essential HVAC air switch designed for accurate low-pressure detection and long-term reliability in demanding climate control applications

making it an essential component for controlling HVAC ventilation fans

Lennox 99G99 Blower Wheel 322838-754 it breaks the circuit toThe Lennox 99G99 Blower Wheel is a precision engineered OEM replacement part designed for high static pressure applications within residential and commercial HVAC systems. Featuring a 1 2 inch bore and a 9x8 diameter to width configuration with clockwise (CW) rotation, this direct drive blower wheel ensures optimal airflow and static efficiency. Constructed from high grade galvanized steel, the 99G99 is balanced to minimize vibration, reducing stress