Replacement HVAC Part

The York S1-02439479000 is a genuine OEM pressure switch with mounting bracket engineered for HVAC system applications. This replacement component is specifically designed for negative pressure sensing operations, with a pressure rating of -0.28 inches water column (IWC), making it ideal for draft detection and safety control functions in heating and cooling equipment. The compact unit measures 5.9 inches in length, 3.05 inches in width, and 3 inches in height, with a lightweight design of approximately 0.205 pounds. These dimensions make it well-suited for installation in space-constrained HVAC environments where real estate inside the equipment cabinet is limited. This pressure switch comes complete with an integrated mounting bracket, simplifying installation procedures and reducing assembly time. The bracket provides secure positioning and vibration resistance, ensuring stable operation throughout extended service cycles. The unit delivers dependable pressure sensing performance critical for system safety and operational control in residential, commercial, and industrial HVAC applications. The York S1-02439479000 is engineered to meet OEM specifications and performance standards, offering reliable replacement capability for existing HVAC systems utilizing this pressure switch configuration. Its negative pressure sensing capability makes it particularly valuable for combustion air monitoring, flue gas sensing, and safety interlock applications where precise draft detection is essential for safe equipment operation. This component is suitable for HVAC professionals, contractors, and maintenance teams performing equipment repairs, upgrades, or preventive maintenance. It provides a genuine OEM alternative to original equipment, ensuring compatibility and performance consistency with York heating and air conditioning systems.