What is the difference between the K-370 and the D25519

Direct Compatibility: Designed as a specific replacement part for Nor East Controls hardware

The MARS 12950 features a dual-voltage rating of 370/440 VAC

a reading of "infinite" or zero indicates the element is cracked and requires immediate replacement

000 AFC protection for safe end-of-life circuit removal

Modine 5H0735910008 Pressure Switch 30067439-890 What is the difference betweenThe Modine 5H0735910008 Pressure Switch is a critical safety component designed for precise combustion air monitoring in high efficiency heating systems. This SPST furnace pressure switch is factory calibrated to a . 8" WC set point, ensuring reliable performance by verifying proper inducer motor operation and venting pressure before allowing the ignition sequence to proceed. As the 5H73591 8 direct replacement, this OEM component maintains system