Lochinvar & A.O. Smith 100208390 Pressure Switch 30067439-890 Engineered for a 200 amp

Engineered for a 200 amp continuous rating and capable of handling 600 amp inrush

Unlike many disposable hoses

For the veteran technician

Enhanced Durability: Thermal-rated insulation prevents hardening and cracking in high-heat furnace vestibules

Lochinvar & A.O. Smith 100208390 Pressure Switch 30067439-890 Engineered for a 200 ampThe Lochinvar & A. O. Smith 100208390 Pressure Switch is a critical safety component engineered for precise draft proving in high efficiency commercial and residential boilers and water heaters. As a veteran grade OEM replacement pressure switch, this part is built to detect specific pressure differentials, ensuring the inducer motor establishes a safe venting environment before the ignition sequence initiates. This specific model is a direct cross