Tempstar Thermostat for TEA09R25STA — PTAC Control | Ships Today
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Overview
This is a genuine OEM thermostat (part #1058517, TSTAT PTAC X) for the Tempstar TEA09R25STA packaged terminal air conditioner (PTAC). The thermostat is the command center of the unit — it reads room temperature and signals the compressor, fan, and heating elements to cycle on and off to maintain your setpoint. When a PTAC thermostat fails, the unit may stop responding to temperature changes, run continuously, short-cycle, or fail to switch between heating and cooling modes. Installing the correct factory-matched control restores accurate temperature regulation and protects the compressor from improper cycling.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1058517 |
| Description | TSTAT PTAC X |
| Type | PTAC Thermostat / Control |
| Brand | Tempstar (ICP / Heil family) |
| Fits Model | TEA09R25STA |
| Fitment | OEM — direct factory replacement |
Compatibility
This thermostat is the factory-specified control for the Tempstar TEA09R25STA PTAC. ICP, Tempstar, Heil, and Comfortmaker units share many components across the family, but always verify the OEM part number (1058517) on your existing control before ordering to confirm an exact match.
Installation Guide
- Safety First — Disconnect power to the PTAC at the unit disconnect or breaker and verify zero voltage with a multimeter before touching any wiring.
- Access — Remove the front grille and service panel to expose the control compartment.
- Document — Photograph every wire and terminal connection on the existing thermostat before disconnecting anything.
- Remove — Label and disconnect the thermostat leads, then release the mounting clips or screws and lift out the old control.
- Install — Mount the new thermostat in the same position and reconnect each wire exactly per your photo.
- Test — Restore power, set a cooling and a heating call, and confirm the unit responds and cycles correctly at setpoint.
Signs You Need a Replacement
- Unit ignores the setpoint or runs continuously without shutting off
- Short-cycling — the compressor or fan rapidly turns on and off
- No response when switching between heat and cool modes
- Blank, frozen, or erratic display and unresponsive controls
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