{"product_id":"tempstar-40va-transformer-for-teb15r50rta-277v-to-24v-oem-1091226-ships-today","title":"Tempstar 40VA Transformer for TEB15R50RTA — 277V to 24V OEM 1091226 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine OEM 40VA control transformer (part number 1091226) for the Tempstar TEB15R50RTA, stepping the 277V line voltage down to the 24V needed by the control circuit. The transformer powers the thermostat, relays, and contactors — without it the low-voltage controls are dead and the unit will not respond to any call for cooling or heat. This listing also covers the unit's 24V control relays, 1053004 (24V relay) and 1060940 (24V DPST relay), which switch the compressor and accessory loads. A transformer typically fails from overload or age, showing up as no 24V output, a tripped internal fuse link, or a burnt smell at the control box. These are exact factory replacements with matching mounting and lead configuration.\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\u003eTransformer Part Number\u003c\/td\u003e\n\u003ctd\u003e1091226\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eStep-Down Control Transformer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar \/ Heil\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\u003e277V\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\u003eIncluded Relays\u003c\/td\u003e\n\u003ctd\u003e1053004 (24V), 1060940 (24V DPST)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eTEB15R50RTA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\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 specifically for the Tempstar\/Heil TEB15R50RTA. Part 1091226 is the exact 40VA, 277-to-24V transformer the unit shipped with, and relays 1053004 and 1060940 are the matching 24V control relays, so the assembly drops in without rewiring or recalibration.\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 277V power at the breaker and verify zero voltage with a multimeter before touching any wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the service panel to expose the control box, transformer, and relays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every primary and secondary lead and relay terminal before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the transformer leads, unbolt it from the control panel, and unclip the failed relay if replacing it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new 1091226 transformer, land the 277V primary and 24V secondary leads per your photos, and seat the 1053004 \/ 1060940 relays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, confirm 24V at the secondary with a multimeter, and verify the relays pull in on a control 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 transformer secondary\u003c\/li\u003e\n\u003cli\u003eControl circuit completely dead — unit ignores all calls\u003c\/li\u003e\n\u003cli\u003eBurnt smell or discoloration at the transformer or control box\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown control fuse or chattering relays\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":63021642023283,"sku":"1053004-GEN","price":39.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048412168563,"sku":"1053004","price":50.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1053004_83055dcd-39ee-47c5-bc93-a11db8f0109d.jpg?v=1782958584","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-40va-transformer-for-teb15r50rta-277v-to-24v-oem-1091226-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}