Source1 2435261000 Air Pressure Switch 1.00 Inch Wc on Fall Spno

Product Description

The Source1 2435261000 is an air pressure switch designed for use in HVAC systems where reliable pressure sensing and circuit control are essential. This switch operates on a single-pole normally open (SPNO) configuration and activates on a pressure fall, with a setpoint of 1.00 inch water column. Air pressure switches like this one play a critical role in furnace and air handler safety circuits. They monitor pressure levels created by the inducer motor or blower to confirm that combustion gases are being properly vented before allowing ignition to proceed. If the inducer fails or a blockage occurs in the flue, the pressure switch detects the drop in negative pressure and keeps the ignition circuit open, preventing unsafe operation. HVAC technicians rely on pressure switches to protect heat exchangers, burners, and control boards from damage caused by improper venting conditions. The SPNO design means the switch contacts remain open under normal atmospheric pressure and close when the system reaches or exceeds the rated differential. When pressure falls to the trigger threshold, the switch opens or closes the circuit depending on system design. This switch is commonly used as a direct OEM replacement or service part in residential and light commercial furnaces and air handlers. It is compatible with a range of brands and equipment configurations where a 1.00 inch water column on-fall air pressure switch is specified. HVAC service professionals should verify the setpoint and contact configuration against the original equipment specification before installation. This part is built for dependable field use and straightforward installation in standard pressure switch mounting locations.

• Single-pole normally open (SPNO) contact configuration for standard HVAC safety circuit integration
• Activates on pressure fall at a 1.00 inch water column setpoint for accurate inducer and blower monitoring
• Designed as a reliable replacement air pressure switch for residential and light commercial HVAC equipment

Product Highlights

The Source1 2435261000 air pressure switch provides dependable SPNO switching at a 1.00 inch water column on-fall setpoint, making it a trusted service replacement for HVAC furnace and air handler safety circuits.

Product Information

Standard Information

• Brand: SOURCE1
• Manufacturer Part Number: 2435261000

Technical Specifications

• Switch Type: Air Pressure Switch
• Contact Configuration: Single-Pole Normally Open (SPNO)
• Activation Mode: On Fall
• Setpoint: 1.00 inch water column