{"product_id":"tempstar-ptac-thermostat-for-tha09k50stb-oem-part-1058517-ships-today","title":"Tempstar PTAC Thermostat for THA09K50STB — OEM Part 1058517 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine OEM thermostat control (part number 1058517, TSTAT PTAC X) for the Tempstar THA09K50STB packaged terminal air conditioner (PTAC). The thermostat is the brain of the PTAC unit — it reads room temperature and cycles the compressor, fan, and heating elements to maintain your setpoint. When a PTAC thermostat fails, the unit may run continuously, fail to start, ignore temperature changes, or display erratic readings. This direct-replacement control restores accurate, reliable temperature management to your THA09K50STB system.\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 Control\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\u003eTHA09K50STB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\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\u003eThis thermostat is engineered for the Tempstar THA09K50STB PTAC unit and shares the 1058517 control across closely related ICP\/Heil\/Tempstar PTAC models in the THA09K series. Always confirm your existing part number before ordering to guarantee correct fitment.\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 unit and breaker, verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the PTAC front cover and control panel to expose the thermostat.\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 connectors and unclip the old control from its mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Seat the new thermostat, reconnect each harness per your photo, and secure the control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, set a cooling and heating call, and confirm the unit responds correctly.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnit runs constantly or never reaches the setpoint\u003c\/li\u003e\n\u003cli\u003eNo response when changing temperature or mode\u003c\/li\u003e\n\u003cli\u003eErratic or blank display \/ unresponsive controls\u003c\/li\u003e\n\u003cli\u003eCompressor short-cycles or fails to start\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":63021641040243,"sku":"1058517-GEN","price":64.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048481276275,"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_6de1d5c6-758c-4a8b-ac9a-2b3abbde105e.jpg?v=1782961065","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-ptac-thermostat-for-tha09k50stb-oem-part-1058517-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}