{"product_id":"heil-pressure-switch-for-wpg4244040lka1-oem-tubing-air-switch-ships-today","title":"Heil Pressure Switch for WPG4244040LKA1 — OEM Tubing Air Switch | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine OEM tubing pressure switch (Part No. 1178417) for the ICP\/Tempstar\/Heil model WPG4244040LKA1. The pressure switch is a safety device that confirms the draft inducer is moving the proper volume of combustion air before the furnace is allowed to ignite. When the inducer runs, it creates negative pressure sensed through the connected tubing; the switch contacts close to prove draft and let the ignition sequence proceed. If venting is blocked, the inducer is weak, or the tubing is cracked or plugged, the switch stays open and the furnace will not fire. Common symptoms include a furnace that runs the inducer but never ignites, a pressure-switch lockout fault code, short cycling, or a switch stuck open or closed.\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\u003ePart 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\u003eTubing Air-Proving Pressure Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP \/ Tempstar \/ Heil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eCombustion Draft Verification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eGas Furnace \/ Inducer Circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eEngineered as the OEM replacement for ICP\/Tempstar\/Heil model WPG4244040LKA1. This tubing pressure switch is used across many gas furnaces in the same brand family. Match the part number and the switch's pressure setpoint stamped on the housing before ordering, since setpoints vary by furnace input and configuration.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Shut off gas and disconnect electrical power, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace control\/inducer access panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the tubing routing and electrical terminals before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the sensing tube off the port, disconnect the spade terminals, and unscrew the old switch from its bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new switch, reconnect the wiring and sensing tube per your photo, ensuring the tube has no kinks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, then confirm the switch proves on inducer start and the furnace completes a normal heat cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInducer runs but the furnace never ignites\u003c\/li\u003e\n\u003cli\u003eControl board reports a pressure-switch open\/closed fault\u003c\/li\u003e\n\u003cli\u003eFurnace short cycles on the ignition attempt\u003c\/li\u003e\n\u003cli\u003eSwitch fails to open or close when tested with a manometer\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":63021520191859,"sku":"1178417","price":36.34,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047209681267,"sku":"1178417-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-1178417.jpg?v=1782877413","url":"https:\/\/nationalhvacparts.com\/products\/heil-pressure-switch-for-wpg4244040lka1-oem-tubing-air-switch-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}