Tempstar Low-Temp PTAC Thermostat for THB07R34DCA — OEM Knob | Ships Today
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Overview
This genuine OEM thermostat package services the Tempstar THB07R34DCA packaged terminal air conditioner (PTAC) and includes the standard thermostat assembly (1058517), the low-temperature thermostat (1059022), and the matching control knob (1058437). The low-temp thermostat is the freeze-protection control that prevents the evaporator coil from icing over and keeps the conditioned space from dropping below a safe minimum — critical in cold-climate hotel rooms and unoccupied units. The standard thermostat handles occupant comfort by cycling the compressor and fan to the dial setpoint. Common failure symptoms include the unit failing to respond to the dial, the coil freezing during heating or cooling, short cycling, and a knob that spins freely. Replacing the OEM thermostat set restores both reliable comfort control and freeze protection.
Specifications
| Spec | Value |
|---|---|
| Part Numbers | 1058517 (thermostat), 1059022 (low-temp), 1058437 (knob) |
| Type | PTAC thermostat with low-temp protection |
| Brand | Tempstar |
| Control Voltage | 24V |
| Fit | OEM direct replacement |
| Application | Packaged terminal air conditioner |
Compatibility
Designed as a direct-fit replacement for the Tempstar THB07R34DCA PTAC chassis. ICP, Heil, and Comfortmaker THB-series packaged terminal units built on the same platform share this control hardware and are serviced by the same thermostat, low-temp control, and knob. Match your part numbers against the originals before ordering.
Installation Guide
- Safety First — Disconnect power at the cord or breaker and verify zero voltage with a multimeter before handling wiring.
- Access — Remove the front grille and control-panel cover to reach the thermostat and low-temp control.
- Document — Photograph all wiring, including the low-temp sensor routing, before disconnecting.
- Remove — Pull the old knob, release the thermostat and low-temp control mounts, and detach the spade terminals.
- Install — Mount the new thermostat (1058517) and low-temp control (1059022), reconnect each wire per your photo, and press on the new knob (1058437).
- Test — Restore power and confirm the unit cycles correctly and the low-temp control protects against coil freeze-up.
Signs You Need a Replacement
- Unit does not respond to the dial setting
- Evaporator coil freezes or the room drops below the safe minimum temperature
- Knob is loose, cracked, or gritty to turn
- Compressor short cycles or runs continuously
Shipping & Returns
Ships same day on orders placed before 3 PM CST. 30-day returns on unused parts. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days