{"product_id":"four-seasons-35889-hvac-pressure-switch","title":"Four Seasons 35889 HVAC Pressure Switch","description":"\u003ch2\u003eOverview of Four Seasons Pressure Switch 35889\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Pressure Switch 35889 is a system mounted trinary pressure switch designed for 12-volt automotive HVAC systems. This metal pressure switch features a female fitting with a 7\/16\" x 20 thread size and an open connector shape, making it suitable for specific vehicle HVAC applications requiring precise pressure control.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVoltage: 12V compatible with standard automotive electrical systems\u003c\/li\u003e\n\u003cli\u003eConnector Shape: Open for easy integration\u003c\/li\u003e\n\u003cli\u003eFitting Gender: Female with 7\/16\" x 20 thread size\u003c\/li\u003e\n\u003cli\u003eNumber of Terminals: 4 for reliable electrical connections\u003c\/li\u003e\n\u003cli\u003eStyle and Type: Trinary pressure switch for multi-function pressure sensing\u003c\/li\u003e\n\u003cli\u003eMaterial: Durable metal construction\u003c\/li\u003e\n\u003cli\u003eSystem Location: System mounted for direct pressure monitoring\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM specifications\u003c\/li\u003e\n\u003cli\u003eOperate PSI Medium On: 230 PSI for accurate pressure activation\u003c\/li\u003e\n\u003cli\u003eFan Open\/Closed: Closed; Compressor Open\/Closed: Open\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Four Seasons Pressure Switch Product Line\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Pressure Switch product line specializes in HVAC pressure switches designed to monitor and control refrigerant pressure within automotive air conditioning systems. The 35889 model is part of this line, offering a trinary pressure switch that supports multiple pressure thresholds to protect the system and ensure proper operation of the compressor and cooling fan. This product line is engineered to meet or exceed OEM standards, providing reliable performance for compatible vehicle HVAC systems.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Pressure Switch 35889 is a trinary pressure switch that operates at 230 PSI medium pressure, designed to manage compressor and fan operation within automotive HVAC systems. Its metal construction ensures durability under varying temperature and pressure conditions. The switch features four terminals and an open connector shape, facilitating straightforward electrical connections. The female fitting with a 7\/16\" x 20 thread size allows for secure installation in system-mounted locations. This pressure switch is engineered to meet or exceed OEM requirements, making it a dependable replacement part for vehicles requiring precise pressure monitoring and control.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents compressor damage by monitoring refrigerant pressure\u003c\/li\u003e\n\u003cli\u003eControls cooling fan operation based on system pressure\u003c\/li\u003e\n\u003cli\u003eProtects HVAC system from overpressure conditions\u003c\/li\u003e\n\u003cli\u003eEnsures proper cycling of compressor and fan for efficient cooling\u003c\/li\u003e\n\u003cli\u003eHelps diagnose pressure-related HVAC system failures\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Four Seasons Pressure Switch 35889, ensure the system is depressurized and the vehicle’s electrical system is disconnected to avoid injury. The female fitting with 7\/16\" x 20 thread size requires proper torque to prevent leaks. Verify the connector terminals align correctly with the vehicle’s wiring harness. This pressure switch is system mounted, so confirm the mounting location matches OEM specifications for optimal performance. Consult the vehicle’s service manual for specific installation procedures related to HVAC pressure switches.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Pressure Switch 35889 is manufactured to meet or exceed OEM standards, ensuring reliable operation within automotive HVAC systems. Constructed from durable metal materials, this pressure switch is designed for longevity and consistent performance. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty covering defects in material and workmanship. Refer to Four Seasons documentation for exact warranty terms.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":51967371542709,"sku":"BBRN-35889","price":70.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_35889_Fro.jpg?v=1775067941","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-35889-hvac-pressure-switch","provider":"PartCatalog","version":"1.0","type":"link"}