Tempstar PTAC Thermostat for TEB09K25SPA – With Control Knob | Ships Today

Overview

This OEM PTAC thermostat kit replaces the temperature control for the Tempstar TEB09K25SPA packaged terminal air conditioner. It includes the PTAC thermostat body (OEM 1058517) and the matching field-replaceable control knob (OEM 1058437). The thermostat reads room temperature and cycles the compressor and fan to maintain setpoint, while the knob provides user adjustment. A failed thermostat typically causes continuous running, no-start conditions, short-cycling, or temperatures that drift away from the dial setting. A cracked or slipping knob makes precise adjustment impossible even when the thermostat is working.

Specifications

Compatibility

Direct OEM replacement for the Tempstar TEB09K25SPA PTAC chassis. The same thermostat and knob platform is shared across ICP, Heil, Comfortmaker, and Tempstar units in the TEB09 family. Confirm your unit's data plate and the existing thermostat part number before ordering.

Installation Guide

1. Safety First – Disconnect power at the unit disconnect and verify zero voltage with a multimeter.
2. Access – Remove the front grille and service panel to expose the control box.
3. Document – Photograph all thermostat wire terminations before disconnecting.
4. Remove – Pull the knob, release the thermostat mounting, and disconnect the sensor and wire leads from the old thermostat.
5. Install – Mount the new thermostat, route the sensor bulb to its original clip, reconnect leads per your photo, and press on the new knob.
6. Test – Restore power, set a call for cooling/heating, and verify the unit cycles correctly at setpoint.

Signs You Need a Replacement

• Unit runs nonstop or never starts regardless of setpoint
• Short-cycling or erratic temperature swings
• Knob spins freely, is cracked, or won't hold 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.