Tempstar PTAC Thermostat for TEA15R50STA — OEM Part 1058517 24V Control | Ships Today
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Overview
This is the genuine Tempstar OEM PTAC thermostat (part number 1058517, "TSTAT PTAC X") for the TEA15R50STA unit. The thermostat is the control brain of the system — it reads room temperature and signals the unit to heat, cool, or run the fan. A factory-matched thermostat ensures the correct staging, fan logic, and 24V control signaling that your Tempstar equipment expects. When a thermostat fails, the unit may run constantly, fail to start, short-cycle, or ignore temperature setpoints entirely. Replacing it with the exact OEM control restores reliable, accurate operation without the wiring guesswork of a universal aftermarket board.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1058517 |
| Description | TSTAT PTAC X |
| Type | PTAC Thermostat Control |
| Brand | Tempstar (ICP / Heil) |
| Fits Model | TEA15R50STA |
| Control Voltage | 24V |
| Fitment | OEM Direct Replacement |
Compatibility
This thermostat is the factory-specified control for the Tempstar TEA15R50STA. It is also shared across the ICP / Heil family of equipment that uses OEM part 1058517. Always verify the printed part number on your existing thermostat or unit data plate before ordering to confirm an exact match.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before touching any wiring.
- Access — Remove the unit's front cover or service panel to expose the thermostat and control wiring.
- Document — Photograph every wire and terminal connection before disconnecting anything.
- Remove — Label and detach the low-voltage wires from the old thermostat, then unclip or unscrew it from its mount.
- Install — Mount the new 1058517 thermostat and reconnect each wire to the matching terminal per your photo.
- Test — Restore power and confirm the unit responds to heat, cool, and fan commands at the setpoint.
Signs You Need a Replacement
- Unit ignores the temperature setpoint or won't reach target temp
- System runs continuously or short-cycles on and off
- No response when switching between heat, cool, or fan modes
- Blank, frozen, or unresponsive thermostat display
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