Tempstar Thermostat for TEB12R00STA — PTAC Control with Knob | Ships Today
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Overview
This is the OEM PTAC thermostat assembly for the Tempstar TEB12R00STA packaged terminal unit, including the thermostat control body (part 1058517) and its matching adjustment knob (part 1058437). The thermostat is the temperature-sensing control of the unit — it reads room temperature, compares it to the dial setpoint, and switches the 24V control circuit to call for cooling, heating, or fan. A failed thermostat causes loss of temperature control, no-call faults, or erratic cycling, while a cracked or slipping knob makes setpoint selection unreliable. Both are included so the control is restored to factory condition in one step. This is a genuine OEM 24V replacement.
Specifications
| Spec | Value |
|---|---|
| Part Numbers | 1058517 (thermostat), 1058437 (knob) |
| Type | PTAC Mechanical Thermostat |
| Brand | Tempstar (ICP / Heil) |
| Control Voltage | 24V |
| Fitment | OEM Direct Replacement |
| Includes | Thermostat body + adjustment knob |
Compatibility
Designed as a direct fit for the Tempstar TEB12R00STA PTAC system. The TEB12 control platform is shared across ICP, Tempstar, Heil, and Comfortmaker packaged terminal units — confirm your part number if the model suffix differs.
Installation Guide
- Safety First — Disconnect power at the unit disconnect and verify zero voltage with a multimeter.
- Access — Remove the front grille and service panel to expose the control box.
- Document — Photograph all thermostat wires and terminal positions before disconnecting.
- Remove — Pull the old knob, release the thermostat from its bracket, and disconnect the 24V leads.
- Install — Mount the new thermostat, reconnect the control leads per your photo, and press on the new knob.
- Test — Restore power and confirm the unit responds to setpoint changes in heat and cool modes.
Signs You Need a Replacement
- Unit will not maintain the selected temperature or runs continuously.
- No response when the dial is turned to call for heating or cooling.
- Cracked, loose, or missing control knob.
- Erratic short-cycling unrelated to refrigerant or airflow faults.
Shipping & Returns
Ships same day on orders placed before 3 PM CST. 30-day returns on unused parts. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days