The Trane SWT3926 Condensate Pressure Switch is a safety control component designed for compatible Trane air conditioners, heat pumps, and air handling HVAC systems. It monitors condensate pressure to detect drainage issues and automatically signals the system to prevent operation when abnormal conditions are present. This helps protect equipment from water damage and supports safe, r... https://www.partshnc.com/swt3926-trane-condensate-press-sw-24v