Use a multimeter to check for continuity across the terminals when the furnace is cool

The MAMAC Systems TE-703-C-12-A-3 is a professional-grade immersion temperature sensor designed for precise fluid monitoring in hydronic HVAC systems and commercial boiler loops

For technicians troubleshooting frequent furnace high limit trips

This is the linkage kit only

This 2-pole relay replaces common industry equivalents like the Honeywell R4222D1021

Sensus 143-62-023-46 Orifice Use a multimeter to checkThe Sensus 143 62 023 46 Orifice is a critical precision engineered component for Sensus 143 80 Series domestic service regulators. Featuring a 5 8" orifice size, this aluminum component is optimized for low pressure applications, typically rated for a maximum inlet pressure of 10 PSIG. In the field, selecting the correct orifice is vital for maintaining the K Factorwhich for this 5 8" variant is approximately 820ensuring calibrated flow rates and