Pay in 4 interest-free payments of $7.79 Learn more
Ships within 48 hours · Estimated delivery Aug 30 - Sep 4
Designed specifically for Armstrong 213
inspect the heat exchanger for cracks and the flue for obstructions before pressing the manual reset button
Frequent tripping of the 1320363 limit switch usually indicates airflow issues
Direct 620858R Replacement: Corrects common system power issues by replacing failed 4021F and 620858R units (verify lead-to-spade conversion)
Honeywell 107408 Heat Conductive Compound Designed specifically for Armstrong 213The Honeywell 107408 Heat Conductive Compound is a professional grade thermal interface material designed specifically for HVACR service technicians. This 4 ounce can provides a high consistency heat transfer grease essential for ensuring accurate temperature sensing in immersion wells and aquastat controllers. By eliminating air gaps between the sensing bulb and the well wall, this compound significantly reduces thermal resistance, preventing erratic
