{"product_id":"carrier-ph1pnb036000abaa-transformer-h3025m","title":"OEM Carrier Transformer 75VA 240\/480V–24V for PH1PNB036000ABAA","description":"\u003ch1\u003eOEM Carrier 75VA Control Transformer HT01BD242 for Model PH1PNB036000ABAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01BD242\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH1PNB036000ABAA\u003c\/strong\u003e packaged heat pump unit. The transformer steps down high-voltage supply power — 208, 240, or 480V primary — to the 24VAC secondary signal that powers your thermostat, control board, and all low-voltage safety circuits. When this part fails, \u003cem\u003enothing works\u003c\/em\u003e: the thermostat goes dark, the system refuses to respond to any call for heating or cooling, and you may find a blown 3A or 5A fuse on the control board as a secondary symptom.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 75VA rating | 208\/240\/480V primary | 24VAC secondary | 50\/60Hz | Foot-mount design | Factory-matched windings for exact voltage regulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers from Carrier deliver tightly regulated 24VAC output, protecting sensitive control boards and communicating thermostats. Generic units can drift under load, causing erratic lockouts, nuisance tripped fuses, and premature board failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Line voltage is present at the primary terminals; always shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify 24VAC output post-install and check for shorted secondary before energizing). Label all low-voltage wires before disconnecting.\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 as a direct OEM replacement for the \u003cstrong\u003eCarrier PH1PNB036000ABAA\u003c\/strong\u003e packaged heat pump unit. This transformer also cross-applies across Carrier, Bryant, Payne, Tempstar, Heil, and Comfortmaker platforms sharing the HT01BD242 specification — always verify primary voltage configuration and VA rating on your unit's data plate before ordering. Have a fitment question? Our HVAC parts specialists verify compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641586176371,"sku":"CARRIE-PH1PNB036000ABAA-TRANSFORMER-HT01BD242","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641586209139,"sku":"CARRIE-PH1PNB036000ABAA-TRANSFORMER-HT01BD242-GEN","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01BD242_b51afdeb-2578-4674-a45b-a92f16441de5.jpg?v=1782943360","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph1pnb036000abaa-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}