{"product_id":"icp-pressure-switch-for-wpg4244040lkb1-oem-furnace-switch-with-tubing-ships-today-1","title":"ICP Pressure Switch for WPG4244040LKB1 — OEM Furnace Switch with Tubing | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM pressure switch assembly with tubing is the direct-fit air-proving safety control for the ICP \/ Heil \/ Tempstar \/ Comfortmaker WPG4244040LKB1 furnace. It senses negative pressure created by the inducer (draft) blower and proves adequate venting before the control board allows the gas valve to open and the igniter to fire. Covered OEM part number: 1178417 (Tubing Pressure Switch). If the switch sticks open, has a cracked or blocked hose, or a contaminated diaphragm, the furnace will lock out on a pressure-switch fault and refuse to ignite — a critical safety function that prevents firing into a blocked flue. Replacing the switch and its tubing restores reliable, safe ignition.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\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\u003eAir-Proving Pressure Switch (with tubing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP \/ Heil \/ Tempstar \/ Comfortmaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eDraft \/ Vent Safety Proving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eGas Furnace\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDesigned for the WPG4244040LKB1 and shared across matching ICP-built furnaces sold under the Heil, Tempstar, Comfortmaker, and Arcoaire badges. Match the switch set-point and port configuration against the failed unit before ordering.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the switch and breaker; verify zero voltage with a multimeter and shut off the gas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the burner\/inducer compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the hose routing and the two electrical terminals before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the tubing off the inducer port, disconnect the spade terminals, and unscrew the old switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new switch, route the new tubing without kinks, and reconnect the terminals per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, start a heat cycle, and confirm the switch closes and the burners light normally.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFurnace locks out with a pressure-switch fault code\u003c\/li\u003e\n\u003cli\u003eInducer runs but ignition never starts\u003c\/li\u003e\n\u003cli\u003eCracked, brittle, or clogged sensing tubing\u003c\/li\u003e\n\u003cli\u003eSwitch fails to close even with a clear vent and good draft\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\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":63027215434099,"sku":"1178417","price":46.8,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047705133427,"sku":"1178417-GEN","price":36.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-1178417_3e48d194-fec4-4f1f-aab4-25c2d2636ac6.jpg?v=1782895089","url":"https:\/\/nationalhvacparts.com\/products\/icp-pressure-switch-for-wpg4244040lkb1-oem-furnace-switch-with-tubing-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}