{"product_id":"tempstar-thermostat-for-teb12r25dca-ptac-low-temp-control-with-knob-ships-today","title":"Tempstar Thermostat for TEB12R25DCA — PTAC Low-Temp Control with Knob | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM thermostat package fits the Tempstar TEB12R25DCA PTAC unit and includes the standard PTAC thermostat (part 1058517), the low-temperature thermostat control (part 1059022), and the matching adjustment knob (part 1058437). The PTAC thermostat governs normal room temperature control over the 24V circuit, while the low-temp thermostat acts as a protective limit — it senses excessively cold conditions and modifies operation to prevent coil freeze-up or cold-weather damage. Together they keep the unit cycling correctly and protected in low ambient conditions. When either thermostat fails, you get loss of temperature control, freeze faults, or a unit that ignores setpoint commands. These are genuine OEM 24V replacements.\u003c\/p\u003e\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 Numbers\u003c\/td\u003e\n\u003ctd\u003e1058517 (PTAC tstat), 1059022 (low-temp tstat), 1058437 (knob)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePTAC Mechanical Thermostat + Low-Temp 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\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\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\u003ctr\u003e\n\u003ctd\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003ePTAC thermostat + low-temp thermostat + knob\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned as a direct fit for the Tempstar TEB12R25DCA PTAC system. The TEB12 control platform is shared across ICP, Tempstar, Heil, and Comfortmaker packaged terminal units — confirm part numbers if your model suffix differs.\u003c\/p\u003e\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 disconnect and verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the front grille and service panel to expose the control box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every thermostat lead and terminal before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the 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 PTAC and low-temp thermostats, reconnect per your photo, and fit the new knob.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm normal cycling plus correct low-temp protection response.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnit will not hold setpoint or runs without stopping.\u003c\/li\u003e\n\u003cli\u003eCoil freeze-ups or nuisance shutdowns in cold conditions.\u003c\/li\u003e\n\u003cli\u003eNo response when the dial is adjusted.\u003c\/li\u003e\n\u003cli\u003eCracked, loose, or missing control knob.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day on orders placed before 3 PM CST. 30-day returns on unused parts. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021643596147,"sku":"1058437-GEN","price":69.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048489795955,"sku":"1058437","price":89.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-thermostat-nonprogrammable-1058437_5176b063-ad51-4477-88b0-16466279175a.jpg?v=1782961408","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-thermostat-for-teb12r25dca-ptac-low-temp-control-with-knob-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}