delivering positive dead-end lock-up to protect downstream equipment

allowing the furnace to resume its heating cycle

How do I know if the Lennox 27W17 is the correct replacement for my furnace

By utilizing this HVAC fuel transition kit

Lennox 25W66 Motor Els PW 17895 delivering positive dead-end lock-up toThe Lennox 25W66 is a professional grade 460V 1 4 HP condenser fan motor engineered for high static pressure applications in commercial and light industrial HVAC systems. Operating at a fixed 825 RPM, this PSC (Permanent Split Capacitor) motor is a direct OEM replacement for the Lennox 100640 02 and is physically identical to the 25W6601. Designed with a NEMA 48 frame and a 1 2 inch diameter shaft, it provides refined torque for outdoor AC unit fan