{"product_id":"tempstar-ptac-thermostat-for-tha12r25std-oem-part-1058517-ships-today","title":"Tempstar PTAC Thermostat for THA12R25STD — OEM Part 1058517 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine OEM PTAC thermostat (part number 1058517, \"TSTAT PTAC X\") for the Tempstar THA12R25STD packaged terminal heat pump. The thermostat is the control hub of the PTAC — it reads room temperature and signals heating or cooling to maintain your setpoint. When it fails, the unit may ignore temperature changes, short-cycle, run continuously, or fail to switch between modes. Fitting the correct OEM control restores precise, reliable operation.\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\u003c\/td\u003e\n\u003ctd\u003e1058517\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription\u003c\/td\u003e\n\u003ctd\u003eTSTAT PTAC X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePTAC Thermostat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (ICP \/ Heil)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eTHA12R25STD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM 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\u003eThis thermostat is the factory-specified control for the Tempstar THA12R25STD PTAC heat pump and related ICP\/Heil packaged terminal units using OEM part 1058517. Confirm your existing part number 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 to the PTAC unit and verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the front cover and control-area service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all wiring and connector positions before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the thermostat harness and release the old thermostat from its clips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Seat the new thermostat and reconnect the harness exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, send a heating then a cooling call, and verify the unit responds.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnit ignores setpoint or won't turn on\u003c\/li\u003e\n\u003cli\u003eNonstop running or rapid short-cycling\u003c\/li\u003e\n\u003cli\u003eWon't switch between heating and cooling modes\u003c\/li\u003e\n\u003cli\u003eBlank, frozen, or unresponsive controls\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":63021640188275,"sku":"1058517-GEN","price":64.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048482881907,"sku":"1058517","price":83.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-thermostat-nonprogrammable-1058517_4f5efb89-6e59-4153-bb57-2eddeb546b37.jpg?v=1782961123","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-ptac-thermostat-for-tha12r25std-oem-part-1058517-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}