Source1 2435780000 Air Pressure Switch 1 Inch Wc on Fall Spno

Product Description

The SOURCE1 2435780000 is an OEM air pressure switch designed for use in residential and light commercial HVAC systems. It monitors changes in air pressure within the system and controls the flow of electrical power based on those changes. This switch is rated at 1 inch WC on fall and is configured as SPNO, meaning Single Pole Normally Open. In normal conditions the switch contacts remain open. When the pressure drops to the rated set point, the contacts close and allow the circuit to complete. This behavior is critical for safe furnace and air handler operation. The switch works as a safety device that confirms the inducer motor is creating adequate draft before the gas valve is allowed to open. Without a properly functioning pressure switch, the system cannot confirm safe combustion conditions, which can lead to lockout faults or unsafe operation. HVAC technicians rely on this type of switch during diagnostic calls involving pressure switch fault codes, draft inducer failures, or flue blockage issues. Replacing a failed or stuck pressure switch with a verified OEM part ensures the system returns to factory specifications. The SOURCE1 2435780000 is built to manufacturer tolerances and is compatible with several York and York-affiliated units including models such as D1NP036N05646, D1NP048N09025, and F2FP048H06 among others. It measures 10.1 inches in length, 4.6 inches in width, and 3.05 inches in height, and weighs approximately 0.155 pounds. This makes it a compact, lightweight component that fits easily into standard furnace and air handler control areas. HVAC professionals servicing York equipment should confirm compatibility with the full model fit list before installation.

• SPNO configuration: Single Pole Normally Open contact design for standard furnace pressure switch applications
• 1 inch WC on fall pressure rating provides accurate activation for inducer draft verification
• OEM-grade construction built to manufacturer specifications for direct replacement in compatible York units

Product Highlights

The SOURCE1 2435780000 air pressure switch is a direct OEM replacement part built to exact manufacturer specifications. It provides reliable draft pressure sensing and circuit control for safe HVAC system operation.

Product Information

Standard Information

• Brand: SOURCE1
• Manufacturer Part Number: 2435780000

Technical Specifications

• Configuration: SPNO (Single Pole Normally Open)
• Pressure Rating: 1 inch WC on Fall
• Length: 10.1 inches
• Width: 4.6 inches
• Height: 3.05 inches
• Weight: 0.155 pounds