{"product_id":"tempstar-40va-transformer-for-teb07k25rta-208-240v-to-24v-control-kit-ships-today","title":"Tempstar 40VA Transformer for TEB07K25RTA — 208\/240V to 24V Control Kit | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine OEM 40VA control transformer (OEM 1056899) for the Tempstar TEB07K25RTA packaged terminal unit, supplied with its companion 24V control relays (OEM 1053004 SPST and 1060940 DPST). The transformer steps line voltage of 208\/240V down to the 24V the control circuit needs to power the thermostat and relays. When a transformer fails, the entire low-voltage system goes dead — no thermostat response, no relay pull-in, and no cooling or heating call. A blown transformer is often caused by a shorted control wire or a stuck relay coil, so replacing the relays alongside it protects the new transformer.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (Transformer)\u003c\/td\u003e\n\u003ctd\u003e1056899\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (Relay SPST)\u003c\/td\u003e\n\u003ctd\u003e1053004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (Relay DPST)\u003c\/td\u003e\n\u003ctd\u003e1060940\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl Transformer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (Heil \/ ICP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRating\u003c\/td\u003e\n\u003ctd\u003e40 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Voltage\u003c\/td\u003e\n\u003ctd\u003e208\/240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eTEB07K25RTA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eBuilt for the Tempstar TEB07K25RTA PTAC and other TEB07-series units using the same 208\/240V-to-24V, 40VA control platform across the ICP\/Heil\/Tempstar family. Verify your unit's part numbers against the OEM numbers above before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the breaker and confirm zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the front grille and electrical-panel cover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all primary and secondary leads and relay wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the transformer leads, unbolt it from the panel, and unclip the failed relays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer and relays, reconnect each wire per your photo, observing primary vs. secondary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, confirm 24V at the secondary, and verify the unit energizes on a call.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo 24V at the secondary terminals\u003c\/li\u003e\n\u003cli\u003eThermostat and relays completely unresponsive\u003c\/li\u003e\n\u003cli\u003eBurnt smell or scorched transformer housing\u003c\/li\u003e\n\u003cli\u003eRepeated blown low-voltage fuse\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021645300083,"sku":"1053004-GEN","price":38.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048411021683,"sku":"1053004","price":49.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1053004_edb1faea-327c-4f5c-9396-d6654ca1a0d2.jpg?v=1782958544","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-40va-transformer-for-teb07k25rta-208-240v-to-24v-control-kit-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}