Tempstar PTAC Thermostat for TEB12K25DCA — 24V with Low-Temp Protection | Ships Today
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Overview
This is the genuine OEM PTAC thermostat package for the Tempstar TEB12K25DCA unit, including the 24V thermostat body (OEM 1058517), the low-temperature protection thermostat (OEM 1059022), and the matching control knob (OEM 1058437). The primary thermostat switches the 24V control circuit for cooling, heating, and fan; the low-temp stat protects the system by preventing operation that could lead to coil freeze-up or compressor damage in cold conditions. When either control fails, the PTAC may run continuously, refuse to maintain setpoint, lock out unexpectedly, or stop responding to the dial. A cracked or stripped knob is also covered with the correct OEM replacement.
Specifications
| Spec | Value |
|---|---|
| OEM Part Numbers | 1058517 (Thermostat), 1059022 (Low-Temp Stat), 1058437 (Knob) |
| Type | PTAC Mechanical Thermostat + Low-Temp Protection |
| Brand | Tempstar / ICP / Heil |
| Control Voltage | 24V |
| Fits Model | TEB12K25DCA |
| Includes | Thermostat body + low-temp stat + knob |
Compatibility
A direct-fit replacement for the Tempstar TEB12K25DCA PTAC. The ICP/Tempstar/Heil TEB12K25 family of packaged terminal units shares a common parts platform, so confirm your unit's model and serial tag before ordering. This is the integrated PTAC control set, not a programmable wall thermostat.
Installation Guide
- Safety First — Disconnect power at the unit cord/disconnect and verify zero voltage with a multimeter.
- Access — Remove the PTAC front cover and control box panel.
- Document — Photograph all thermostat and low-temp stat wiring before disconnecting.
- Remove — Pull the old knob, release the mounting clips/screws, and disconnect both stats.
- Install — Mount the new thermostat and low-temp stat, reconnect each lead per your photo, and press on the new knob.
- Test — Restore power and confirm normal setpoint response plus correct low-temp lockout behavior.
Signs You Need a Replacement
- Unit runs nonstop or will not maintain the set temperature
- Nuisance low-temp lockouts or coil freeze-ups
- No response when turning the temperature dial
- Cracked, loose, or stripped control knob
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