{"product_id":"carrier-ph1rpa036000aawa-pressure-switch-jrhhrg","title":"OEM Carrier Low Pressure Switch 7 PSI Open 22 PSI Close — HK02ZB044","description":"\u003ch1\u003eOEM Carrier Low Pressure Switch HK02ZB044 for Model PH1RPA036000AAWA\u003c\/h1\u003e\u003cp\u003eThis OEM low pressure switch (part number \u003cstrong\u003eHK02ZB044\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH1RPA036000AAWA\u003c\/strong\u003e packaged unit. The pressure switch monitors the operation of the inducer motor by sensing negative air pressure (draft) inside the flue. When the inducer is running correctly, the switch closes to allow the ignition sequence to proceed. A failed or stuck-open pressure switch prevents the ignition cycle from ever starting, leading to a \u003cstrong\u003eno-heat lockout\u003c\/strong\u003e — one of the most common furnace\/packaged unit service calls.\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 | \u003cstrong\u003e50\" wire leads\u003c\/strong\u003e | 24V control circuit | Country of origin: Mexico\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM part, meeting exact factory design tolerances for pressure setpoints and diaphragm durability. Aftermarket switches frequently drift from rated setpoints over time, causing nuisance lockouts or — worse — unsafe operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Straightforward swap with no refrigerant handling required. Tools needed: 1\/4\" nut driver, needle-nose pliers, and a multimeter to verify continuity before reinstallation. Always confirm 24V at the pressure switch terminals before condemning the part — a blocked condensate drain or failed inducer motor can mimic a bad pressure switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock orders ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for the \u003cstrong\u003eCarrier PH1RPA036000AAWA\u003c\/strong\u003e packaged unit. Verify the pressure setpoints on your existing switch's label (7# open \/ 22# close) and lead length before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — no guesswork, no costly return shipping.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641555571059,"sku":"CARRIE-PH1RPA036000AAWA-PRESSURE_SWITCH-HK02ZB044","price":95.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641555603827,"sku":"CARRIE-PH1RPA036000AAWA-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_47699771-07b2-4264-afe2-00256a56683a.jpg?v=1775036374","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph1rpa036000aawa-pressure-switch-jrhhrg","provider":"National HVAC Parts","version":"1.0","type":"link"}