For contractors performing a furnace heat exchanger replacement

Horizontal mounting may shift the setpoint due to the weight of the internal diaphragm

Smith 100157702 Control is a critical outdoor air reset control designed to optimize the performance of hydronic heating systems

While some aftermarket filters claim higher MERV ratings

Precise Airflow Control: Integrated electronic controls provide variable speed adjustments

Gates 4L450 Belt R-407C For contractors performing a furnaceThe Gates 4L450 Belt is a heavy duty Fractional Horsepower (FHP) V Belt engineered for high demand HVACR equipment. This Truflex V Belt features a 1 2 inch top width and a 45 inch outside diameter, making it a standard solution for light duty blowers, fans, and pump drives. Built with flex bonded cords, the belt ensures uniform load distribution and resists bending stress, which is critical when navigating the small diameter sheaves often found in