{"product_id":"tempstar-ptac-thermostat-kit-for-thb07k25dca-low-temp-control-knob-ships-today","title":"Tempstar PTAC Thermostat Kit for THB07K25DCA — Low-Temp Control \u0026 Knob | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM PTAC thermostat kit for the Tempstar THB07K25DCA includes the main PTAC thermostat (1058517), the low-temperature thermostat (1059022, TSTAT LOW TEMP), and the control knob (1058437). The PTAC thermostat manages room comfort while the low-temp thermostat acts as a freeze\/lock-out protection control, preventing operation when temperatures drop below the safe range. Failure of either control leads to the unit not reaching setpoint, running continuously, locking out in cold weather, or failing to respond to the knob. These are factory-spec parts matched to the unit's 24V control circuit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\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\u003ePTAC Thermostat\u003c\/td\u003e\n\u003ctd\u003e1058517 (TSTAT PTAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-Temp Thermostat\u003c\/td\u003e\n\u003ctd\u003e1059022 (TSTAT LOW TEMP)\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\u003ePTAC Mechanical Thermostat w\/ Low-Temp Control\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\u003eTHB07K25DCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eEngineered for the Tempstar \/ Heil \/ ICP THB07K25DCA PTAC and related THB07K25 series units that share the same thermostat and low-temp control platform. Verify OEM part numbers 1058517, 1059022, and 1058437 against your failed parts before ordering.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the PTAC grille and control-area service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all thermostat and low-temp control wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the old knob, release both thermostats from their brackets, and disconnect the 24V leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new thermostats, reconnect leads per your photo, and press on the new knob.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, call for cooling and heating, and confirm normal operation and low-temp protection.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUnit runs constantly or never reaches the setpoint.\u003c\/li\u003e\n\u003cli\u003eUnit locks out or won't run in cold conditions (failed low-temp control).\u003c\/li\u003e\n\u003cli\u003eKnob is cracked, slipping, or won't adjust temperature.\u003c\/li\u003e\n\u003cli\u003eShort-cycling or erratic compressor and heater operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\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":63021639369075,"sku":"1058437-GEN","price":72.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048486224243,"sku":"1058437","price":94.84,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-thermostat-nonprogrammable-1058437_c359865b-3c11-4483-a91c-3971c78fd394.jpg?v=1782961257","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-ptac-thermostat-kit-for-thb07k25dca-low-temp-control-knob-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}