The American Standard BAYTFMR004AB Kit-Transformer is a replacement control transformer kit designed for American Standard/Trane HVAC equipment. The BAYTFMR004AB designation appears in authorized replacement-part catalogs as a direct substitute for the original transformer in compatible systems, providing the low-voltage power required for control circuits. For exact fit, electrical ratings, and which models it supports, consult the official American Standard/Trane replacement-part listings or your equipment’s service manual to verify compatibility before purchase.
