Tempstar PTAC Low-Temp Thermostat for TEB09K25DCA — OEM Control Knob Included | Ships Today
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Overview
This is the OEM low-temperature PTAC thermostat assembly for the Tempstar TEB09K25DCA air handler, supplied with the matching control knob. The thermostat senses indoor air temperature and cycles the unit's heating and cooling to maintain the setpoint, while the low-temp variant adds protection that prevents the unit from operating below safe coil temperatures. Common failure symptoms include a unit that will not respond to temperature changes, erratic or continuous fan operation, a cracked or stripped control knob, and inaccurate temperature regulation that leaves the space too warm or too cold. Replacing the thermostat with the correct OEM part restores accurate, reliable control without guesswork.
Specifications
| Spec | Value |
|---|---|
| OEM Part Numbers | 1058437 (Knob), 1059022 (Low-Temp Thermostat), 1058517 (PTAC Thermostat) |
| Type | PTAC Low-Temperature Thermostat |
| Brand | Tempstar (ICP / Heil) |
| Fit | OEM Replacement |
| Includes | Thermostat + Control Knob |
Compatibility
Engineered for the Tempstar TEB09K25DCA model and the ICP/Heil PTAC family that shares this platform. Always verify your existing part number against the OEM numbers listed above before ordering.
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 panel to expose the control area.
- Document — Photograph all wire connections at the thermostat before disconnecting anything.
- Remove — Pull the control knob, then disconnect the thermostat leads and unclip the thermostat body and sensing bulb from the chassis.
- Install — Mount the new thermostat, route the sensing bulb to the original location, reconnect wiring per your photo, and press on the new knob.
- Test — Restore power and confirm the unit responds to setpoint changes in both heating and cooling.
Signs You Need a Replacement
- Unit does not respond when the knob is turned
- Cracked, loose, or stripped control knob
- Room temperature drifts far from the setpoint
- Continuous running or short-cycling with no other faults
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