specifically known as the HMI-1TT7

Testing the sensor with a multimeter against the manufacturer resistance chart will confirm if the thermistor has failed

Designed for compatibility with high-efficiency natural gas water heaters and propane units

Built for durability in high-demand HVACR environments

This OEM Lennox part is built to resist thermal stress and mechanical fatigue

Browning AK154H Sheave L99H008 specifically known as the HMI-1TT7The Browning AK154H Sheave is a robust, single groove cast iron sheave engineered for reliable power transmission in demanding HVACR applications. With a 15. 25" outside diameter, this fixed pitch sheave is designed for optimal performance with 3L, 4L, and A section V belts, requiring an H series bushing for secure mounting. Its durable cast iron construction ensures a long service life and consistent operation in systems like fans, blowers, and