{"product_id":"payne-pa13pr048000aeaa-pressure-switch-jria74","title":"OEM Payne Pressure Switch Kit for PA13PR048000AEAA — HK02ZA395 \/ HK02Z","description":"\u003ch1\u003eOEM Payne High \u0026amp; Low Pressure Switch Kit for Model PA13PR048000AEAA\u003c\/h1\u003e\u003cp\u003eThis OEM pressure switch kit includes both the \u003cstrong\u003ehigh pressure switch (HK02ZA395)\u003c\/strong\u003e and \u003cstrong\u003elow pressure switch (HK02ZB028)\u003c\/strong\u003e factory-specified for the \u003cstrong\u003ePayne PA13PR048000AEAA\u003c\/strong\u003e split-system heat pump. Pressure switches are safety devices that prove the inducer motor is creating adequate airflow before allowing the ignition sequence to proceed. A failed pressure switch causes the system to lock out before ignition — typically resulting in a blinking fault code, no heat, or a furnace that attempts to start and immediately shuts down without ever firing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e High Pressure Switch — OEM part HK02ZA395 | Low Pressure Switch — OEM part HK02ZB028 | Factory-calibrated W.C. (water column) rating | 24V control circuit compatible | Spade terminal connectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are calibrated to exact W.C. specifications for this model. Generic alternatives often carry wider tolerances, risking nuisance lockouts or, worse, failing to trip under genuine unsafe conditions — a critical safety concern.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting 24V wiring, removing the inducer housing panel, and swapping the switch and rubber tubing. Tools needed: 1\/4\" nut driver, needle-nose pliers, multimeter (to test continuity), and a manometer if verifying W.C. spec. Always power down and lock out the unit before beginning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on both switches. Orders ship same business day from our stocked warehouse when placed before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This kit is engineered specifically for the \u003cstrong\u003ePayne PA13PR048000AEAA\u003c\/strong\u003e 4-ton split-system heat pump. Verify your existing switch part numbers (printed on the switch body) against HK02ZA395 and HK02ZB028 before ordering. If only one switch has failed, individual switches are available — contact our fitment team for assistance. In stock and ready to ship today — get your Payne system back online fast.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909070115187,"sku":"PAYNE-PA13PR048000AEAA-PRESSURE_SWITCH-HK02ZA395","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909070147955,"sku":"PAYNE-PA13PR048000AEAA-PRESSURE_SWITCH-HK02ZA395-GEN","price":38.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_e4318829-aa36-437f-83b9-9320885063ad.jpg?v=1780718627","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa13pr048000aeaa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}