replacing obsolete switches 68266 and 125133

the "/U" suffix simply denotes a "Universal" retail-packaged version of the same Honeywell HVAC part

Includes high-grade elastomers and internal components resistant to synthetic oils and high-pressure refrigerants

and 1/2" 38-100 series vacuum breakers

What causes these blowers to fail

Reznor 270474 Light 321894-706 replacing obsolete switches 68266 andThe Reznor 270474 is a professional grade 24V red indicator light designed for precise status monitoring in commercial and industrial HVAC systems. Engineered for a 12. 7 mm mounting hole (approximately 1 2 inch), this industrial pilot light provides immediate visual feedback for system diagnostics, lockout conditions, or heater operation. This specific HVAC indicator lamp is a factory authorized replacement part, ensuring electrical compatibility