Tempstar PTAC Thermostat for THA07R25STB — OEM Control 1058517 | Ships Today
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Overview
This is the genuine OEM PTAC thermostat control (part number 1058517, "TSTAT PTAC X") for the Tempstar THA07R25STB packaged terminal air conditioner/heat pump. The thermostat is the brain of the PTAC unit — it reads room temperature, manages the compressor and fan cycles, and switches the unit between cooling and heating modes. A failed thermostat is one of the most common reasons a PTAC stops responding, runs continuously, or fails to hold a setpoint. Installing the correct factory control restores accurate temperature regulation and protects the compressor from short-cycling. This is an exact-fit OEM replacement, not a universal substitute, so it matches the original wiring harness and mounting on the THA07R25STB chassis.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1058517 |
| Description | TSTAT PTAC X |
| Type | PTAC Thermostat Control |
| Brand | Tempstar (ICP / Heil) |
| Fits Model | THA07R25STB |
| Fit | OEM Exact Replacement |
Compatibility
Engineered specifically for the Tempstar THA07R25STB PTAC unit and its sister models in the THA07 series built by ICP/Heil. Because PTAC controls are tied to a specific chassis and wiring harness, confirm your unit's model and serial label matches before ordering. If you are unsure, contact us with your full model number and we will verify fitment.
Installation Guide
- Safety First — Disconnect power to the PTAC at the breaker or unplug the unit, and verify zero voltage with a multimeter before touching any wiring.
- Access — Remove the front grille and the unit's service/control panel to expose the thermostat assembly.
- Document — Photograph every wire and connector at the thermostat before disconnecting anything.
- Remove — Unplug the wiring harness from the old thermostat and release its mounting clips or screws, then lift the failed control out.
- Install — Seat the new 1058517 control, secure the mounting, and reconnect the harness exactly as shown in your photos.
- Test — Restore power, set a cooling and a heating call, and confirm the compressor and fan respond and the unit holds the setpoint.
Signs You Need a Replacement
- PTAC unit does not power on or fails to respond to temperature changes.
- Unit runs continuously or short-cycles and never reaches the setpoint.
- Display is blank, frozen, or shows erratic readings.
- Heating or cooling mode will not engage even with a valid call.
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