Tempstar PTAC Thermostat & Knob Kit for TEB15R50STA — OEM 1058517 | Ships Today

Overview

This is the genuine OEM PTAC thermostat assembly for the Tempstar TEB15R50STA packaged terminal air conditioner, covering thermostat part 1058517 and its matching control knob 1058437. The thermostat governs the entire unit — it senses room temperature and switches the compressor, blower, and heat on and off across the 24V control circuit. A failed thermostat or a stripped/cracked knob leaves occupants unable to set temperature, and often shows up as a unit that runs nonstop, refuses to start, or short-cycles. These are exact factory replacements that fit the existing control pocket and harness with no rewiring or recalibration.

Specifications

Compatibility

Built specifically for the Tempstar/Heil TEB15R50STA PTAC. Parts 1058517 and 1058437 are the exact thermostat and knob the unit shipped with, so they drop in without adapters, controller changes, or recalibration.

Installation Guide

1. Safety First — Disconnect power at the cord or breaker and verify zero voltage with a multimeter before touching wiring.
2. Access — Remove the PTAC front grille and control-housing service panel to reach the thermostat.
3. Document — Photograph all thermostat wire terminations and knob position before disconnecting anything.
4. Remove — Pull the old knob, release the thermostat mounting clip, slide it out, and disconnect the low-voltage leads.
5. Install — Seat the new 1058517 thermostat, reconnect leads exactly as photographed, then press the new 1058437 knob onto the shaft.
6. Test — Restore power, run a cooling and a heating call, and confirm the unit responds to the dial.

Signs You Need a Replacement

• Cracked, stripped, or missing control knob
• Unit ignores the temperature dial or won't start
• PTAC runs continuously and never reaches setpoint
• Short-cycling or erratic temperature control

Shipping & Returns

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