{"product_id":"carrier-pf4mnb061l00abaa-transformer-h3hwwy","title":"OEM Carrier Transformer 120V-24V 40VA for PF4MNB061L00ABAA","description":"\u003ch1\u003eOEM Carrier Transformer 120V–24V 40VA for Model PF4MNB061L00ABAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PF4MNB061L00ABAA\u003c\/strong\u003e air handler. The transformer steps down line voltage from 120V to 24VAC to power the entire low-voltage control circuit — including the thermostat, control board, and zone valves. When it fails, the result is total system non-response: the thermostat goes blank, no calls for heating or cooling are executed, and the unit sits completely inert. A blown transformer is often caused by a short in the control wiring, so always inspect the low-voltage circuit before installing the replacement.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120VAC | Secondary voltage: 24VAC | VA rating: 40VA | Factory OEM part number: HT01CN241 | Direct plug-in replacement, no wiring modifications required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer wound to exact factory specifications. Generic units frequently feature lower-grade core laminations and looser VA tolerances, which can cause voltage sag under full control-circuit load — stressing the control board and shortening its life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24VAC output after install). Inspect all 24V wiring for shorts before energizing. Photograph existing wiring connections prior to removal.\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 Engineered specifically for the Carrier \u003cstrong\u003ePF4MNB061L00ABAA\u003c\/strong\u003e air handler. Verify primary\/secondary voltage and VA rating on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists will confirm fitment before you buy — order with confidence.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643255279987,"sku":"CARRIE-PF4MNB061L00ABAA-TRANSFORMER-HT01CN241","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643255312755,"sku":"CARRIE-PF4MNB061L00ABAA-TRANSFORMER-HT01CN241-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01CN241_7c1da097-51ac-44b8-ac60-dc190f4b3aed.jpg?v=1775040968","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf4mnb061l00abaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}