{"product_id":"carrier-pg9maa036060aaka-transformer-h2usbz","title":"OEM Carrier 40VA Transformer 120V-24V HT01BC116 — PG9MAA036060AAKA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 120V–24V (HT01BC116) for Model PG9MAA036060AAKA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PG9MAA036060AAKA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to 24V AC, powering the entire low-voltage control circuit — including the thermostat, gas valve, inducer relay, and ignition board. When this part fails, nothing in your furnace responds: the thermostat goes dark, the system will not call for heat, and the control board receives no power. A shorted low-voltage component (bad gas valve coil, wiring fault) is the most common cause of transformer failure, so always inspect the secondary circuit before installing a replacement.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V AC primary | 24V AC secondary | 60 Hz | Foot-mount configuration | Wire lead connections | Includes inline 3A fuse protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is factory-wound to exact Carrier tolerances for stable 24V output under full load. Generic units often deliver inconsistent secondary voltage, causing erratic board behavior, nuisance lockouts, and premature failure of low-voltage components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify voltage is absent before touching any wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install and to check for secondary-side shorts before replacing). Photograph all wiring connections prior to removal. Note: OEM part HT01BC116 has been updated to successor part number HT680054 — both are fully interchangeable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the \u003cstrong\u003eCarrier PG9MAA036060AAKA\u003c\/strong\u003e gas furnace. Also replaces legacy part numbers HT01BC116B, HT01BC115, HT01BB126, HT01BC120, and HT680054. Verify your existing transformer's VA rating and primary\/secondary voltages on the data plate before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — order with confidence and get back to heat fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642377097587,"sku":"CARRIE-PG9MAA036060AAKA-TRANSFORMER-HT01BC116","price":67.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642377163123,"sku":"CARRIE-PG9MAA036060AAKA-TRANSFORMER-HT01BC116-GEN","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC116_4ad06391-ea4b-42e6-b0fc-baeaf9091f2c.jpg?v=1775016325","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg9maa036060aaka-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}