Tempstar PTAC Thermostat for TEB12R34SPA — 24V Wall Control with Knob | Ships Today

Overview

This is the genuine OEM PTAC thermostat assembly for the Tempstar TEB12R34SPA packaged terminal air conditioner, covering OEM part numbers 1058517 (TSTAT PTAC) and the matching 1058437 control knob. The thermostat is the brain of the PTAC unit — it senses room temperature and signals the compressor, fan, and heat circuits through the 24V control loop. When a PTAC thermostat fails, you typically see no response to temperature setting changes, a unit that runs continuously or not at all, or erratic cycling. Replacing the thermostat and its knob restores accurate, repeatable temperature control.

Specifications

Compatibility

Engineered as the factory replacement for the Tempstar / Heil / ICP TEB12R34SPA PTAC chassis. Use only on the matching model family to ensure the control range and terminal configuration are correct.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before opening the unit.
2. Access — Remove the front grille and service panel to expose the control box.
3. Document — Photograph all thermostat wiring and terminal positions before disconnecting.
4. Remove — Pull the control knob, release the thermostat retaining clips, and disconnect the 24V leads.
5. Install — Mount the new thermostat, reconnect each lead to its photographed terminal, and press on the new knob.
6. Test — Restore power, set a call for cooling and heating, and confirm the unit responds at the correct setpoints.

Signs You Need a Replacement

• Unit ignores temperature setting changes
• Compressor runs nonstop or never engages
• Short-cycling or erratic on/off behavior
• Cracked, loose, or missing control knob

Shipping & Returns

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