Tempstar PTAC Thermostat for TEB09K50SPA — 24V Knob Control Kit | Ships Today

Overview

This OEM PTAC thermostat assembly (part 1058517) and matching control knob (part 1058437) replace the temperature-control unit on the Tempstar TEB09K50SPA packaged terminal air conditioner. The thermostat reads room temperature and opens or closes the 24V control circuit to cycle the compressor and fan, while the knob provides the setpoint adjustment the occupant turns. When the thermostat fails, the unit may run continuously, fail to cool, or ignore the dial; a worn or cracked knob removes any precise control. Replacing both parts together returns the PTAC to accurate, reliable temperature regulation.

Specifications

Compatibility

Designed for the Tempstar TEB09K50SPA PTAC and interchangeable across ICP, Heil, and Comfortmaker PTAC units that share the same control plate and 24V thermostat circuit. Verify your existing knob spline and thermostat mounting before ordering.

Installation Guide

1. Safety First — Disconnect power at the unit disconnect and verify zero voltage with a multimeter.
2. Access — Remove the PTAC front cover to expose the control panel.
3. Document — Photograph all thermostat wire terminals before disconnecting.
4. Remove — Pull the old knob off the shaft, then unscrew and disconnect the failed thermostat.
5. Install — Mount the new thermostat, reconnect the leads per your photo, and press on the new knob.
6. Test — Restore power, set a low setpoint, and confirm the unit cycles on and off at temperature.

Signs You Need a Replacement

• Unit fails to hold the selected room temperature
• Compressor short-cycles or never shuts off
• Knob is cracked, loose, or no longer holds a setting
• No response when adjusting the temperature dial

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.