{"product_id":"carrier-pg9mab036040absa-transformer-h2usbz","title":"OEM Carrier Furnace Transformer 40VA 120V-24V for PG9MAB036040ABSA","description":"\u003ch1\u003eOEM Carrier 40VA Furnace Control Transformer 120V–24V for Model PG9MAB036040ABSA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PG9MAB036040ABSA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, gas valve, and all low-voltage safety circuits. When it fails, the entire control circuit goes dead — the furnace will not respond to the thermostat, will not attempt ignition, and no indicator lights will illuminate. A failed transformer is one of the most commonly misdiagnosed furnace faults; always verify with a multimeter before replacing a control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary | 24V secondary | 50\/60 Hz single-phase | Wire-lead connections | OEM part number HT01BC116 (superseded by HT680054)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances for Carrier equipment. Undersized or off-tolerance generic units can cause erratic thermostat behavior, nuisance lockouts, and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and confirm zero voltage before touching any wiring. Tools needed: multimeter, flat-head screwdriver, needle-nose pliers. Label or photograph all wire connections before disconnecting the old unit. Total replacement time is typically 15–20 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In stock — ships same business day when ordered by 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Factory-matched for Carrier model \u003cstrong\u003ePG9MAB036040ABSA\u003c\/strong\u003e gas furnace. Also replaces legacy part numbers HT01BC115, HT01BB126, HT01CT120, HT01BC120, HT01AW115, and HT01AA012 across the Carrier, Bryant, and Payne furnace families. Confirm your existing transformer's VA rating and primary\/secondary voltage on the data plate before ordering. Our fitment team is available to verify compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642211324275,"sku":"CARRIE-PG9MAB036040ABSA-TRANSFORMER-HT01BC116","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642211357043,"sku":"CARRIE-PG9MAB036040ABSA-TRANSFORMER-HT01BC116-GEN","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC116_6c44e388-b21c-46e6-893d-943f7b868c93.jpg?v=1775031729","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg9mab036040absa-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}