{"product_id":"carrier-ph1rpa120000aawa-pressure-switch-jrhhrg","title":"OEM Carrier Low Pressure Switch 7 PSI Open 22 PSI Close — PH1RPA120000","description":"\u003ch1\u003eOEM Carrier Low Pressure Switch 7 PSI Open \/ 22 PSI Close for Model PH1RPA120000AAWA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier replacement pressure switch (part number \u003cstrong\u003eHK02ZB044\u003c\/strong\u003e) factory-specified for the \u003cstrong\u003eCarrier PH1RPA120000AAWA\u003c\/strong\u003e packaged unit. The pressure switch is a critical safety component in the heating sequence: it monitors negative pressure (draft) created by the inducer motor and closes the circuit to allow ignition only when proper airflow is confirmed. When this switch fails or sticks open, the furnace will lock out before ignition, typically displaying a pressure switch fault code and preventing any heat delivery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Opens at \u003cstrong\u003e7 PSI\u003c\/strong\u003e | Closes at \u003cstrong\u003e22 PSI\u003c\/strong\u003e | 50\" wire leads | 24V control circuit | Country of Origin: Mexico | OEM Part Number: HK02ZB044\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a factory OEM switch engineered to Carrier's exact pressure threshold tolerances. Generic switches frequently carry wider trip-point variance, risking nuisance lockouts or, more critically, failure to prove unsafe draft conditions — a safety hazard. OEM is always recommended for pressure switches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Tools needed: 1\/4\" nut driver, needle-nose pliers, and a manometer (recommended to verify W.C. rating post-install). Always confirm inducer motor operation and check for blocked flue or condensate drain before replacing the switch — a failed inducer is the most common root cause of pressure switch faults.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM drop-in replacement for Carrier model \u003cstrong\u003ePH1RPA120000AAWA\u003c\/strong\u003e. Verify the PSI ratings and lead length against your unit's data plate and existing switch before ordering. Our HVAC parts specialists are available to confirm fitment — order with confidence or contact us before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641550098803,"sku":"CARRIE-PH1RPA120000AAWA-PRESSURE_SWITCH-HK02ZB044","price":95.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641550131571,"sku":"CARRIE-PH1RPA120000AAWA-PRESSURE_SWITCH-HK02ZB044-GEN","price":83.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZB044_5f17069f-f523-4741-b319-d2fe4c8b5f77.jpg?v=1775036381","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph1rpa120000aawa-pressure-switch-jrhhrg","provider":"National HVAC Parts","version":"1.0","type":"link"}