{"product_id":"carrier-py4gpab60130aa-pressure-switch-h43sg3","title":"OEM Carrier Draft Pressure Switch 0.18\" WC for PY4GPAB60130AA","description":"\u003ch1\u003eOEM Carrier Draft Inducer Pressure Switch 0.18\" WC for Model PY4GPAB60130AA\u003c\/h1\u003e\u003cp\u003eThis OEM draft pressure proving switch (part number \u003cstrong\u003eHK06WC061\u003c\/strong\u003e, superseded by \u003cstrong\u003eHK06MB061\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY4GPAB60130AA\u003c\/strong\u003e packaged unit. The pressure switch monitors negative pressure produced by the inducer blower to confirm safe flue-gas venting before the ignition sequence is allowed to proceed. When this switch fails or sticks open, the control board cannot verify inducer operation, causing a pre-ignition lockout — the system will attempt to start, fail to prove the inducer, and lock out with a diagnostic fault code before any gas is ever introduced to the burners.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 0.18\" W.C. (water column) set point | Normally open | Single-port diaphragm design | Honeywell cross-reference: IS20224-5236 | Factory-matched switching threshold ±0.02\" W.C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM switches are calibrated at the exact set-point required by your unit's heat exchanger design. Off-tolerance generic switches can trip early (nuisance lockouts) or fail to trip late (dangerous unvented combustion), making OEM the only safe choice for pressure switch replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off gas and power at the disconnect before beginning. Tools needed: 1\/4\" nut driver, flat-head screwdriver, manometer (to verify new switch operation). Inspect rubber hose port and tubing for cracks or blockage before installing the new switch — a blocked tube is a common root cause of switch failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003ePY4GPAB60130AA\u003c\/strong\u003e. Also fits select Bryant and Payne packaged units, heat pumps, and air handlers requiring a 0.18\" W.C. normally-open draft proving switch. Always verify the W.C. rating printed on your original switch label before ordering — W.C. ratings are not interchangeable. Our fitment team is available to confirm compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640306028915,"sku":"CARRIE-PY4GPAB60130AA-PRESSURE_SWITCH-HK06WC061","price":46.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640306061683,"sku":"CARRIE-PY4GPAB60130AA-PRESSURE_SWITCH-HK06WC061-GEN","price":40.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK06WC061_e98052cb-0818-49f2-ba37-7b5d28fc915a.jpg?v=1775027608","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py4gpab60130aa-pressure-switch-h43sg3","provider":"National HVAC Parts","version":"1.0","type":"link"}