Lennox 49W64 Reversing Valve 30067439-890 replacing it with a new

replacing it with a new 12988-002 can help stabilize the flame pattern and correct ignition issues caused by improper air-fuel mixing

and K16BA-18 models

ensuring consistent airflow and protecting the compressor from liquid slugging during low-ambient operations

the T-4002-125 ensures that the pneumatic feedback and bimetal sensing element operate within nominal specifications without mechanical interference

Engineered for 1075 RPM operation with 4-speed taps

Lennox 49W64 Reversing Valve 30067439-890 replacing it with a newThe Lennox 49W64 Reversing Valve is a critical 4 way component engineered for heat pump refrigerant flow control in residential and light commercial systems. Operating with a 24V solenoid coil, this valve facilitates the essential transition between heating and cooling modes by redirecting discharge gas from the compressor. Designed as a direct OEM replacement part, the 49W64 is electrically and mechanically identical to Lennox 49W6401, ensuring