{"product_id":"carrier-ph16nc02400gbaaa-pressure-switch-1vlc9v","title":"OEM Carrier Low Pressure Switch 312926-258 for PH16NC02400GBAAA","description":"\u003ch1\u003eOEM Carrier Low Pressure Switch 312926-258 for Model PH16NC02400GBAAA\u003c\/h1\u003e\u003cp\u003eThis OEM low pressure switch (part# \u003cstrong\u003e312926-258\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH16NC02400GBAAA\u003c\/strong\u003e packaged heat pump unit. The pressure switch is a critical safety device that monitors the negative pressure (inches of water column) generated by the inducer\/draft motor to confirm proper venting before allowing the ignition sequence to proceed. When this switch fails — or when a blocked flue, failed inducer motor, or cracked pressure hose causes an out-of-range reading — the control board will lock out the system and prevent heating or cooling operation entirely.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Low pressure switch | Factory-rated W.C. (water column) set point | Direct OEM replacement for part# 312926-258 | Spade terminal connectors for drop-in fitment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier part, manufactured to exact factory pressure set-point tolerances. Aftermarket switches frequently carry ±5–10% W.C. tolerances, which can cause nuisance lockouts or — more dangerously — allow operation under unsafe venting conditions.\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, flathead screwdriver, manometer (recommended to verify hose integrity). Always inspect the rubber pressure hose for cracks or blockages before replacing the switch, as a damaged hose is a frequent root cause of switch failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. 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 specifically for the Carrier \u003cstrong\u003ePH16NC02400GBAAA\u003c\/strong\u003e packaged heat pump unit. Verify the W.C. rating stamped on your existing switch and match it to your unit's data plate before ordering. If you need help confirming fitment, our HVAC parts specialists are available to verify compatibility before you buy — call or chat today. \u003cstrong\u003eOrder before 3 PM local time for same-day shipping.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641662329203,"sku":"CARRIE-PH16NC02400GBAAA-PRESSURE_SWITCH-312926-258","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641662361971,"sku":"CARRIE-PH16NC02400GBAAA-PRESSURE_SWITCH-312926-258-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-312926-258_5ce72f4c-39ad-418d-942c-33af54b53dc6.jpg?v=1775036309","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph16nc02400gbaaa-pressure-switch-1vlc9v","provider":"National HVAC Parts","version":"1.0","type":"link"}