Technical Reliability: Rated for a mechanical life of 1

Engineered for industrial-grade durability in high-cycle HVAC control systems

Low Maintenance: Fixed-position sensing hardware requires no routine calibration or internal maintenance once properly aligned with airflow

this SPST furnace switch acts as a primary safety mechanism to prevent hazardous conditions by interrupting the burner circuit if heat exceeds calibrated limits

MARS 12871 Run Capacitor Technical Reliability: Rated for aThe MARS 12871 dual run capacitor is a heavy duty 40 5 MFD 370 VAC oval component engineered for high demand HVAC applications. This MARS 12871 run capacitor is a reliable aftermarket HVAC capacitor designed to stabilize voltage and current flow to both the compressor (40 MFD) and the fan motor (5 MFD) in split system condensing units. Rated for 370 volts, it features a leak proof, oil filled design that ensures optimal heat dissipation during