{"product_id":"tempstar-ptac-thermostat-knob-control-kit-for-thb09k50spa-24v-ptac-ships-today","title":"Tempstar PTAC Thermostat Knob \u0026 Control Kit for THB09K50SPA — 24V PTAC | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM thermostat and knob assembly fits the Tempstar THB09K50SPA packaged terminal air conditioner (PTAC). The kit includes the 24V PTAC thermostat (OEM 1058517) and its matching control knob (OEM 1058437). The thermostat reads room temperature and cycles the compressor and heat contactor to hold the setpoint. PTAC thermostats are high-cycle parts in hotels and multi-family housing, and a failed unit shows up as a room that won't hold temperature, short-cycles, or won't change modes. The correct OEM replacement restores accurate control without re-calibration.\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\u003eThermostat Part Number\u003c\/td\u003e\n\u003ctd\u003e1058517 (TSTAT PTAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKnob Part Number\u003c\/td\u003e\n\u003ctd\u003e1058437 (KNOB TSTAT PTAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eMechanical PTAC Thermostat\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\u003eControl 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\u003eTHB09K50SPA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDirect OEM fit for the Tempstar\/Heil\/ICP THB09K50SPA PTAC. Thermostat and knob ship together so the dial indexes correctly after install. Verify your model and serial tag 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 PTAC plug or breaker and verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the front grille and control panel cover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all wiring and the knob orientation before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the knob, release the thermostat clip\/screws, and disconnect the 24V leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new thermostat, reconnect per your photo, and press on the new knob aligned to the index.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm the unit responds in both heat and cool.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoom overshoots or never reaches the setpoint.\u003c\/li\u003e\n\u003cli\u003eCompressor short-cycles or won't start.\u003c\/li\u003e\n\u003cli\u003eKnob is cracked, spins freely, or won't index.\u003c\/li\u003e\n\u003cli\u003eNo response when switching heat\/cool modes.\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":63021638386035,"sku":"1058437-GEN","price":64.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048486519155,"sku":"1058437","price":83.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-thermostat-nonprogrammable-1058437_59a26f18-63da-406a-bbbb-0f132109d71d.jpg?v=1782961272","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-ptac-thermostat-knob-control-kit-for-thb09k50spa-24v-ptac-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}