Lennox 33J89 Furnace Pressure SwitchThe Lennox 33J89 Furnace Pressure Switch is essential for safe, reliable furnace operation. This Type Pressure Switch is used on furnaces to monitor draft and trigger a shutdown if unsafe conditions are detected, protecting your home and equipment. Designed as a durable, compatible furnace replacement part, the 33J89 serves as a critical HVAC safety sensor in Lennox systems. When paired with the furnace control board, it helps ensure proper ignition

The Dual Direct Ignition design provides quick

the kit offers straightforward installation and reliable performance

Current ratings: 6 A resistive / 4 A inductive

Sealed vent connections for safe

this pressure switch kit simplifies repairs and reduces downtime

The rugged brass body delivers durability in harsh environments

Durable construction designed to withstand repeated heat cycles

powered by a 24V AC supply at 0

reduce downtime

Quiet operation minimizes household sound disruption while maintaining effective venting

Featuring a 95° rotation and 35 in-lb torque

Ideal for home or small-office lighting control and convenience