{"product_id":"carrier-py1pea042120acba-pressure-switch-jrhhvr","title":"OEM Carrier Pressure Switch 22#CLS\/7#OPN 50\" Leads — PY1PEA042120ACBA","description":"\u003ch1\u003eOEM Carrier Pressure Switch HK02ZB038 — 22#CLS \/ 7#OPN, 50\" Leads for Model PY1PEA042120ACBA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier pressure switch (part number \u003cstrong\u003eHK02ZB038\u003c\/strong\u003e), factory-specified for the \u003cstrong\u003eCarrier PY1PEA042120ACBA\u003c\/strong\u003e packaged unit. The pressure switch monitors the inducer\/draft blower to confirm adequate venting before allowing ignition to proceed. When it fails or sticks, the furnace or packaged unit will lock out before a flame is ever established — a common symptom is the inducer running but the system never advancing to ignition, accompanied by a diagnostic fault code indicating an open pressure switch.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Close pressure: 22\" W.C. | Open pressure: 7\" W.C. | Lead length: 50\" | OEM Carrier part number: HK02ZB038 | Also cross-references as PS80-02-F0074\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e This is a genuine Carrier OEM switch calibrated to exact factory W.C. ratings. Aftermarket pressure switches often carry ±15% tolerance on trip points, causing nuisance lockouts or — worse — allowing the system to fire without proper draft pressure, creating a safety hazard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — The pressure switch is typically accessible once the front panel is removed. Tools needed: 1\/4\" nut driver, flathead screwdriver, and a manometer if verifying inducer pressure. Always confirm system power is off before disconnecting wiring. Photograph all hose and wiring connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer 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 Designed and factory-matched for the \u003cstrong\u003eCarrier PY1PEA042120ACBA\u003c\/strong\u003e packaged unit. Verify W.C. ratings on your existing switch and match to your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — order with confidence and get your system back on within 24 hours.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641127948659,"sku":"CARRIE-PY1PEA042120ACBA-PRESSURE_SWITCH-HK02ZB038","price":57.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641127981427,"sku":"CARRIE-PY1PEA042120ACBA-PRESSURE_SWITCH-HK02ZB038-GEN","price":50.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZB038_426e0318-f878-4f7a-99f9-4dfecb4529ce.jpg?v=1775037073","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1pea042120acba-pressure-switch-jrhhvr","provider":"National HVAC Parts","version":"1.0","type":"link"}