Tempstar PTAC Thermostat for THB07R25DCA – 24V Low-Temp Control with Knob | Ships Today
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Overview
This OEM PTAC thermostat package is the factory replacement control for the Tempstar THB07R25DCA packaged terminal air conditioner. It includes the 24V PTAC thermostat body (OEM 1058517), the low-temperature limit thermostat (OEM 1059022), and the matching control knob (OEM 1058437). The main thermostat reads room temperature and cycles cooling and heating to the occupant setpoint, while the low-temp stat protects the unit by interrupting operation under freeze or low-coil-temperature conditions. When these controls fail, you see erratic cycling, no response to the knob, a unit that runs continuously, or nuisance shutdowns from a faulty low-temp limit. PTAC controls are high-handling wear items in lodging and multifamily applications.
Specifications
| Spec | Value |
|---|---|
| OEM Part Numbers | 1058517 (Thermostat), 1059022 (Low-Temp Stat), 1058437 (Knob) |
| Type | PTAC Manual Thermostat with Low-Temp Limit |
| Brand | Tempstar / Heil / ICP |
| Control Voltage | 24V |
| Application | Packaged Terminal Air Conditioner |
| Fit | OEM Direct Replacement |
Compatibility
Direct-fit replacement for the Tempstar THB07R25DCA PTAC and other ICP/Heil PTAC units using the same control platform with a low-temperature limit. Confirm your part numbers against 1058517, 1059022, and 1058437 before ordering.
Installation Guide
- Safety First – Disconnect power to the PTAC and verify zero voltage with a multimeter.
- Access – Remove the front grille and control panel cover.
- Document – Photograph all wire positions and sensor routing before disconnecting.
- Remove – Pull the knob, disconnect the thermostat and low-temp stat leads, and unclip the failed components.
- Install – Mount the new thermostat and low-temp stat, route the sensor as before, reconnect per your photo, and press on the new knob.
- Test – Restore power and confirm response to setpoint changes plus proper low-temp protection.
Signs You Need a Replacement
- No response to knob adjustments or setpoint changes
- Cracked, loose, or missing control knob
- Nuisance low-temperature shutdowns or failure to protect against freeze
- Constant running, short-cycling, or no cooling/heat call
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. 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