{"product_id":"rheem-42-101956-04-furnace-air-pressure-switch-1-50-wc-draft-safety-control","title":"Rheem 42-101956-04 Furnace Air Pressure Switch -1.50\" WC Draft Safety Control","description":"\u003ch4\u003eDescription\u003c\/h4\u003e\n\u003cp\u003eThe Rheem 42-101956-04 is a furnace air pressure switch designed to monitor draft conditions at a calibrated setpoint of -1.50\" WC. It ensures safe furnace operation by verifying that the inducer motor is creating proper airflow before ignition. This component is used in Rheem and Ruud gas furnace systems for dependable safety control.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRheem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHVAC Controls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e42-101956-04\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePressure Switches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePressure Set Point\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-1.50\" WC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSwitch Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAir Pressure Safety Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGas Furnaces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContact Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSPST\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInternal Furnace Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePort Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle or Dual Port (Model Dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial Construction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-Temperature Resistant Plastic \u0026amp; Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDraft Verification \/ Safety Interlock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTypical Furnace Operating Range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrical Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQuick Connect Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.28 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003e42-101956-04\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp data-start=\"357\" data-end=\"1008\"\u003eThe 42-101956-04 is a precision air pressure switch developed for Rheem and Ruud HVAC systems, specifically for gas furnace safety applications. It functions by detecting negative pressure within the venting system, confirming that combustion gases can be safely exhausted before allowing burner operation. Built with a responsive diaphragm mechanism and factory-calibrated to -1.50 inches water column, it delivers accurate and repeatable switching performance. This switch is designed for direct OEM replacement, ensuring compatibility with designated furnace models while maintaining system safety and operational integrity.\u003c\/p\u003e\n\u003cp data-start=\"1010\" data-end=\"1028\"\u003e\u003cstrong data-start=\"1010\" data-end=\"1026\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1029\" data-end=\"2030\"\u003e\n\u003cli data-start=\"1029\" data-end=\"1119\"\u003eCalibrated Pressure Setpoint: Factory set to -1.50\" WC for accurate draft verification\u003c\/li\u003e\n\u003cli data-start=\"1120\" data-end=\"1207\"\u003eFurnace Safety Function: Prevents ignition if proper airflow conditions are not met\u003c\/li\u003e\n\u003cli data-start=\"1208\" data-end=\"1282\"\u003eOEM Replacement Component: Designed for Rheem and Ruud furnace systems\u003c\/li\u003e\n\u003cli data-start=\"1283\" data-end=\"1359\"\u003eReliable Diaphragm Design: Ensures consistent pressure sensing over time\u003c\/li\u003e\n\u003cli data-start=\"1360\" data-end=\"1439\"\u003eHVAC System Compatibility: Suitable for a range of residential gas furnaces\u003c\/li\u003e\n\u003cli data-start=\"1440\" data-end=\"1519\"\u003eDurable Construction: Built for long-term operation in furnace environments\u003c\/li\u003e\n\u003cli data-start=\"1520\" data-end=\"1603\"\u003eElectrical Switching Stability: Provides dependable open\/close contact response\u003c\/li\u003e\n\u003cli data-start=\"1604\" data-end=\"1659\"\u003eCompact Design: Fits easily within furnace housings\u003c\/li\u003e\n\u003cli data-start=\"1660\" data-end=\"1737\"\u003eEasy Installation: Compatible with standard tubing and wiring connections\u003c\/li\u003e\n\u003cli data-start=\"1738\" data-end=\"1821\"\u003eMoisture-Resistant Materials: Designed for use in condensate-prone environments\u003c\/li\u003e\n\u003cli data-start=\"1822\" data-end=\"2030\"\u003eCritical Safety Device: Requires exact pressure rating for proper system function\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 42-101956-04 delivers the reliability and precision required for safe furnace draft monitoring and combustion control.\u003c\/p\u003e","brand":"Rheem","offers":[{"title":"Default Title","offer_id":51282680545578,"sku":"42-101956-04","price":77.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/s-l1600_2bacd538-658f-4f66-938b-bf7c19b7de15.webp?v=1774175425","url":"https:\/\/iqelectro.com\/products\/rheem-42-101956-04-furnace-air-pressure-switch-1-50-wc-draft-safety-control","provider":"IQElectro","version":"1.0","type":"link"}