Tempstar PTAC Thermostat for TEA12R25STD — OEM Control 1058517 | Ships Today
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Overview
This is the genuine OEM PTAC thermostat (part number 1058517, "TSTAT PTAC X") for the Tempstar TEA12R25STD packaged terminal air conditioner. The thermostat is the brain of the unit — it reads room temperature and signals the compressor, fan, and heating element to cycle on and off to maintain your setpoint. When a PTAC thermostat fails you will see erratic temperature swings, a unit that runs constantly or never starts, an unresponsive control panel, or heating and cooling modes that no longer switch correctly. Installing the exact factory-matched control restores precise, reliable temperature management without the guesswork of a universal replacement.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1058517 |
| Description | TSTAT PTAC X |
| Type | PTAC Thermostat / Control |
| Brand | Tempstar |
| Fits Model | TEA12R25STD |
| Fitment | OEM Direct Replacement |
Compatibility
This thermostat is engineered specifically for the Tempstar TEA12R25STD and shared ICP / Tempstar / Heil PTAC platforms that call out OEM part 1058517. Because it is the factory control, it matches the unit's wiring harness and connector exactly. Always confirm the part number printed on your existing thermostat before ordering.
Installation Guide
- Safety First — Disconnect power at the unit and the breaker, then verify zero voltage with a multimeter before touching any wiring.
- Access — Remove the front grille and control-access service panel to expose the thermostat assembly.
- Document — Photograph all wire connections and their terminal positions before disconnecting anything.
- Remove — Release the thermostat retaining clips/screws, unplug the connector or disconnect the labeled leads, and lift out the old control.
- Install — Seat the new 1058517 thermostat, reconnect the harness or leads exactly per your photo, and secure the mounting hardware.
- Test — Restore power, set a cooling and a heating call, and confirm the unit cycles correctly and holds the setpoint.
Signs You Need a Replacement
- Room temperature swings well above or below the setpoint.
- Unit short-cycles, runs continuously, or fails to start on a call.
- Display or buttons are unresponsive or show erratic readings.
- Heating and cooling modes no longer switch over properly.
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. 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