{"product_id":"icp-pressure-switch-tubing-for-wpg4364090rka1-oem-replacement-ships-today","title":"ICP Pressure Switch Tubing for WPG4364090RKA1 — OEM Replacement | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the OEM pressure switch tubing (part number 1178417) for the ICP \/ Tempstar \/ Heil WPG4364090RKA1 packaged unit. This flexible tubing connects the pressure switch to the inducer housing and draft port, allowing the switch to sense the negative pressure created by the inducer motor before the control board permits ignition. Over time this tubing cracks, hardens, clogs with condensate, or pops off its barb — any of which causes a false pressure-switch reading and a no-heat \/ lockout condition. Replacing brittle or compromised tubing with the correct OEM hose restores accurate pressure sensing and reliable ignition sequencing.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e1178417\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePressure Switch Tubing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003ePressure switch to inducer sensing line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eFurnace \/ Packaged Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned as the factory sensing tubing for the ICP WPG4364090RKA1 and equivalent Tempstar, Heil, and Comfortmaker packaged units built on this platform. Match the routing and length to your existing hose before installing.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the unit and breaker, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the service \/ blower panel to reach the pressure switch and inducer assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the tubing routing and every barb connection before removing the old hose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the cracked tubing from the pressure switch port and the inducer\/draft fitting, clearing any condensate from the ports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Route the new tubing along the same path and press it firmly onto both barbs with no kinks or low spots that could trap water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, start a heat call, and confirm the pressure switch closes and the burners ignite normally.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo-heat lockout with a pressure-switch fault code\u003c\/li\u003e\n\u003cli\u003eVisibly cracked, hardened, kinked, or collapsed tubing\u003c\/li\u003e\n\u003cli\u003eCondensate trapped inside the hose causing intermittent operation\u003c\/li\u003e\n\u003cli\u003eTubing that repeatedly slips off its barb fitting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"OEM","offer_id":63021510197619,"sku":"WPG4364090RKA1","price":36.34,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047707296115,"sku":"WPG4364090RKA1-GEN","price":27.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-WPG4364090RKA1.jpg?v=1782895230","url":"https:\/\/nationalhvacparts.com\/products\/icp-pressure-switch-tubing-for-wpg4364090rka1-oem-replacement-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}