{"product_id":"carrier-py1pna048100afba-pressure-switch-jrhhvr","title":"OEM Carrier Pressure Switch 22#CLS 7#OPN 50\" Leads — PY1PNA048100AFBA","description":"\u003ch1\u003eOEM Carrier Pressure Switch HK02ZB038 for Model PY1PNA048100AFBA\u003c\/h1\u003e\u003cp\u003eThis OEM pressure switch (part number \u003cstrong\u003eHK02ZB038\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY1PNA048100AFBA\u003c\/strong\u003e packaged gas\/electric unit. The pressure switch monitors negative pressure created by the inducer motor to confirm safe venting before allowing the ignition sequence to proceed. When it fails or sticks open, the control board cannot verify inducer operation and the furnace will lock out — typically before the igniter ever glows, resulting in a no-heat call with no visible flame or spark.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 22# Close \/ 7# Open set points | 50\" wire leads | Single-port design | Factory-calibrated W.C. rating matched to PY1PNA048100AFBA inducer pressure\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 set points. Aftermarket pressure switches frequently carry ±10–15% tolerances that can cause nuisance lockouts, false proving, or unsafe operation over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power before servicing. Tools needed: 1\/4\" nut driver, needle-nose pliers, small flathead for hose barb. Photograph the hose and wiring connections before removal. Confirm hose integrity — a cracked pressure hose is often the root cause of switch failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered and calibrated specifically for the \u003cstrong\u003eCarrier PY1PNA048100AFBA\u003c\/strong\u003e packaged unit. Verify the part number on your existing switch or unit data plate before ordering. Our HVAC parts team is available to confirm fitment — reach out before you buy if unsure. \u003cstrong\u003eOrder now and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640942449011,"sku":"CARRIE-PY1PNA048100AFBA-PRESSURE_SWITCH-HK02ZB038","price":57.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640942481779,"sku":"CARRIE-PY1PNA048100AFBA-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_9c42bbf5-edba-41cf-8746-3f39d3a11989.jpg?v=1775037023","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1pna048100afba-pressure-switch-jrhhvr","provider":"National HVAC Parts","version":"1.0","type":"link"}