Tempstar PTAC Thermostat for THB07K34DCA — 24V with Low-Temp Stat | Ships Today

Overview

This is the OEM PTAC thermostat set for the Tempstar THB07K34DCA unit, covering the control knob (OEM 1058437), the main PTAC thermostat (OEM 1058517), and the low-temperature thermostat (OEM 1059022). The main thermostat regulates the 24V control circuit to maintain room setpoint, while the low-temp stat provides freeze/low-ambient protection that disables operation when temperatures fall too far. Failure symptoms include temperatures that ignore the dial, nuisance shutdowns, or a unit that runs continuously. Replacing the thermostats and knob as a set restores accurate, protected operation.

Specifications

Compatibility

A direct OEM replacement for the Tempstar / ICP / Heil THB07K34DCA PTAC system. The knob, PTAC thermostat, and low-temp thermostat are the original control components for this model.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before servicing.
2. Access — Remove the PTAC front grille and control-panel cover to expose the thermostats.
3. Document — Photograph all thermostat and low-temp stat wiring before disconnecting.
4. Remove — Pull the old knob, unscrew the thermostat bodies, and disconnect the 24V leads and sensing bulb.
5. Install — Mount the new thermostat and low-temp stat, reconnect leads per your photo, and press on the new knob.
6. Test — Restore power and confirm normal cycling plus low-temp cutout function.

Signs You Need a Replacement

• Room temperature won't match the dial setting.
• Unit shuts down on false low-temperature trips.
• Compressor or fan won't start, or runs continuously.
• Broken control knob or failed sensing bulb.

Shipping & Returns

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