providing consistent performance

and drip shields required to manage condensate and maintain thermal integrity when the airflow direction is reversed

Common Questions Is the York S1-026-35494-000 compatible with third-party motor mounts

Using a genuine HVAC thermal fuse ensures the system stays within manufacturer specifications for safety and performance

Chemical Resistance: Constructed from high-grade materials to resist the acidic nature of furnace condensate

Lochinvar & A.O. Smith 100108421 Lower Thermostat 30067439-890 providing consistent performanceFor professional contractors servicing Lochinvar or A. O. Smith residential electric units, the 100108421 Lower Thermostat is the critical OEM replacement part required to maintain precise thermal regulation. This WH9 lower thermostat is the officially authorized update for the legacy 9000507005 and 9000507015 models. Engineered with a patented bimetal sensor, this component ensures maximum temperature sensitivity and responsiveness to tank