SWT3221 Trane Pressure Switch

Overview

The Trane SWT3221 (also referenced as SWT03221) is a genuine Original Equipment Manufacturer (OEM) replacement pressure switch, commonly used in Trane and American Standard gas furnace units and other Heating, Ventilation, and Air Conditioning (HVAC) systems. This component is essential for monitoring air or gas pressure to ensure safe and proper operation of the furnace.

Features

As an OEM replacement part, the SWT3221 is designed for perfect compatibility and reliable performance within the specified Trane/American Standard models. It is an air pressure switch used for pilot duty in the HVAC system.

Specifications

• Part Number: SWT3221 (or SWT03221)
• Product Type: Air Pressure Switch / Gas Furnace Pressure Switch
• Water Column (WC) Rating: 1.4″ WC
• Pilot Duty: 28 VA
• Operating Thresholds: Rated for -1.36° open, and -1.55° close.

Applications

The SWT3221 Trane Pressure Switch is primarily used as a safety and operational component in Trane and American Standard gas furnaces, fitting popular units such as AUC1B040A9241AB, AUC1B040A9241AC, and AUC1B040A9241AD. It monitors airflow/pressure conditions to confirm safe combustion before initiating the furnace cycle.