the 9043-451 maintains the necessary static pressure for proper pressure switch engagement and consistent airflow

preventing nuisance tripping

extending the lifespan of refrigeration and cooling components

As a primary main control power module

maintaining the original AHRI certification

Lennox 11K49 Conversion Kit R-22 the 9043-451 maintains the necessaryThe Lennox 11K49 is a critical LP gas conversion kit designed for field technicians performing fuel conversions on Lennox high efficiency heating systems. This OEM Lennox replacement part provides the necessary hardware to safely transition an appliance from natural gas to liquid propane, ensuring the manifold pressure and burner orifices are correctly calibrated for LP combustion characteristics. Using this Lennox furnace conversion kit maintains the