{"product_id":"icp-pressure-switch-tubing-for-wpg4484130lkb1-oem-1178417-ships-today-1","title":"ICP Pressure Switch Tubing for WPG4484130LKB1 — OEM 1178417 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM pressure switch tubing (part 1178417) is the draft-proving hose assembly for the ICP Tempstar Heil WPG4484130LKB1 furnace. The tubing connects the inducer\/collector box to the pressure switch, transmitting the negative pressure that proves combustion airflow before the control board allows the igniter and gas valve to energize. Cracked, brittle, or blocked tubing prevents the switch from closing, so the furnace locks out for safety and will not heat. Replacing this inexpensive part restores reliable draft proving and clears nuisance pressure-switch faults.\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\u003ePressure Switch Tubing\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\u003eDraft \/ Airflow Proving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eGas Furnace Pressure Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\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 for the ICP \/ Tempstar \/ Heil WPG4484130LKB1 furnace and other ICP-family models using tubing 1178417. Verify routing and length against 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 furnace switch and breaker, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the burner-compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph how the tubing routes between the inducer\/collector box and the pressure switch ports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the old tubing from both barbed fittings, inspecting ports for soot or condensate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Press the new tubing fully onto each fitting with no kinks or sags that could trap condensate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, start a heat call, and confirm the switch closes and the furnace ignites normally.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace locks out on a pressure-switch fault code.\u003c\/li\u003e\n\u003cli\u003eTubing is cracked, hardened, kinked, or filled with condensate.\u003c\/li\u003e\n\u003cli\u003eInducer runs but ignition never starts.\u003c\/li\u003e\n\u003cli\u003eIntermittent no-heat that clears after the hose is reseated.\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":63027207405939,"sku":"1178417","price":42.84,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047707689331,"sku":"1178417-GEN","price":32.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-1178417_01eb51cd-5d35-4537-8380-ccf042075438.jpg?v=1782895256","url":"https:\/\/nationalhvacparts.com\/products\/icp-pressure-switch-tubing-for-wpg4484130lkb1-oem-1178417-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}