{"product_id":"carrier-pg9maa036040afka-transformer-h2usbz","title":"OEM Carrier Furnace Transformer 40VA 120V-24V for PG9MAA036040AFKA","description":"\u003ch1\u003eOEM Carrier Furnace Transformer 40VA 120V-24V for Model PG9MAA036040AFKA\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer is the factory-authorized replacement for the \u003cstrong\u003eCarrier PG9MAA036040AFKA\u003c\/strong\u003e gas furnace. The transformer converts 120V line voltage to the 24V AC signal that powers every low-voltage component in your system — thermostat, gas valve, control board relays, and zone controllers. When the transformer fails, the entire control circuit goes dark: your thermostat goes blank, the furnace won't respond to any call for heat, and you may measure zero voltage between the R and C terminals on the control board. Replacing it is one of the most cost-effective furnace repairs you can make.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | 60 Hz single-phase | Foot-mount configuration | Wire lead connections with insulated female quick-connects | Dimensions approx. 3″ L × 2-3\/16″ W × 2″ H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier replacement (supersedes legacy part number HT01BC116 → current OEM part HT680054), supplied in factory-authorized packaging. Generic transformers frequently use undersized copper windings and run warmer under load, increasing the risk of premature failure and nuisance tripping of your furnace's limit circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and verify zero volts before touching any wiring. Photograph all wire connections before removal. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 24V output across R and C terminals after installation before closing the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered by 5 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003ePG9MAA036040AFKA\u003c\/strong\u003e gas furnace. This transformer also carries crossover coverage for multiple Carrier, Bryant, and Payne furnace models — confirm your unit's data plate shows 120V primary \/ 24V secondary \/ 40VA before ordering. Not sure it fits? Our parts team verifies fitment at no charge before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642382569843,"sku":"CARRIE-PG9MAA036040AFKA-TRANSFORMER-HT01BC116","price":51.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642382602611,"sku":"CARRIE-PG9MAA036040AFKA-TRANSFORMER-HT01BC116-GEN","price":45.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC116_13eb2b88-7b34-489b-8e6c-8013b96c3f96.jpg?v=1775031705","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg9maa036040afka-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}