{"product_id":"payne-pa1ppa036000aaba-pressure-switch-jria74","title":"OEM Payne High Pressure Switch HK02ZA395 for PA1PPA036000AABA","description":"\u003ch1\u003eOEM Payne High Pressure Switch HK02ZA395 for Model PA1PPA036000AABA\u003c\/h1\u003e\u003cp\u003eThis OEM high pressure switch (part number \u003cstrong\u003eHK02ZA395\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003ePayne PA1PPA036000AABA\u003c\/strong\u003e air handler or packaged unit. The pressure switch is a critical safety device that monitors negative air pressure created by the inducer motor to confirm proper draft before allowing ignition to proceed. When this switch fails or sticks in the open position, the control board cannot verify inducer operation and will lock out the system — resulting in a no-heat condition with no spark or gas flow.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e High pressure switch | OEM part number HK02ZA395 | Factory-calibrated W.C. (water column) rating | Single-port design | 1\/4\" spade terminals | Designed for use with Payne PA1P series units\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM replacement switch calibrated to the exact pressure threshold required by your PA1PPA036000AABA. Generic pressure switches often use imprecise W.C. ratings that can cause nuisance lockouts or — more dangerously — fail to detect blocked flue conditions, creating a safety hazard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power and gas before servicing. Tools needed: 1\/4\" nut driver, needle-nose pliers, multimeter (to verify switch continuity), and a short length of replacement tubing if the existing hose shows cracking. Inspect the rubber hose and port for debris or moisture before installing the new switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Orders placed by 3 PM local time ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Payne \u003cstrong\u003ePA1PPA036000AABA\u003c\/strong\u003e. Always verify the OEM part number HK02ZA395 against your unit's data plate or existing switch before ordering. If you are unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908974662003,"sku":"PAYNE-PA1PPA036000AABA-PRESSURE_SWITCH-HK02ZA395","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908974694771,"sku":"PAYNE-PA1PPA036000AABA-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_2dbb3795-c243-45de-aa82-124626939392.jpg?v=1780718344","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa1ppa036000aaba-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}