{"product_id":"carrier-pg8maa036070aaja-pressure-switch-h43srw","title":"OEM Carrier Pressure Switch SPST 0.27\" WC — PG8MAA036070AAJA","description":"\u003ch1\u003eOEM Carrier SPST High-Fire Pressure Switch for Model PG8MAA036070AAJA\u003c\/h1\u003e\u003cp\u003eThis OEM pressure switch (part# \u003cstrong\u003eHK06WC091\u003c\/strong\u003e, also supplied as assembly \u003cstrong\u003eHK06WC069\u003c\/strong\u003e with bracket) is the factory-specified inducer proving switch for the \u003cstrong\u003eCarrier PG8MAA036070AAJA\u003c\/strong\u003e gas furnace. Its job is critical: it monitors the negative pressure (draft) created by the inducer motor and signals the control board that safe flue venting is confirmed before allowing ignition to proceed. When this switch fails or drifts out of calibration, the furnace will lock out — typically before the igniter even glows — leaving you with a no-heat call and a fault code pointing to a pressure switch open condition.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 0.27\" W.C. break point | 0.42\" W.C. max break | SPST (Single Pole, Single Throw) | 28VA @ 24VAC pilot duty rating | Factory-calibrated Honeywell-manufactured diaphragm assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Factory Authorized Part built by Honeywell. Generic aftermarket switches commonly ship with ±15% W.C. tolerance — a mismatch that causes nuisance lockouts or, worse, allows the furnace to fire without proper draft. OEM means the setpoint is exact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power and gas before starting. Tools needed: flathead screwdriver, 1\/4\" nut driver, multimeter (to confirm open\/closed across switch terminals), and a manometer if verifying inducer draft. Disconnect the two wires and single hose port, swap, and reconnect. Note: HK06WC069 includes the mounting bracket — confirm your application before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty \u0026amp; Shipping:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse. Replaces discontinued OEM part numbers HK06WC091 and HK06WC069 — current updated OEM cross-reference is HK06MC110.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003ePG8MAA036070AAJA\u003c\/strong\u003e packaged gas furnace. Also fits many Carrier, Bryant, and Payne gas furnace models sharing the same 0.27\" W.C. SPST high-fire pressure switch specification — always verify your unit's data plate W.C. rating before ordering. Have a fitment question? Our HVAC parts team confirms compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643069518195,"sku":"CARRIE-PG8MAA036070AAJA-PRESSURE_SWITCH-HK06WC091","price":77.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643069550963,"sku":"CARRIE-PG8MAA036070AAJA-PRESSURE_SWITCH-HK06WC091-GEN","price":68.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK06WC091_4196c088-0d50-4308-9215-82b339a28807.jpg?v=1775038416","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8maa036070aaja-pressure-switch-h43srw","provider":"National HVAC Parts","version":"1.0","type":"link"}