Tempstar PTAC Thermostat for THB07R25STA – 24V Manual Control with Knob | Ships Today
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Overview
This OEM PTAC thermostat assembly is the factory replacement control for the Tempstar THB07R25STA packaged terminal air conditioner. It combines the 24V PTAC thermostat body (OEM 1058517) with the matching control knob (OEM 1058437), giving you everything needed to restore accurate temperature regulation. The thermostat senses room air temperature and cycles the unit's cooling and heating functions to maintain the occupant setpoint. When this control fails, you typically see erratic cycling, a unit that runs continuously, no response to the knob, or a PTAC that will not call for cooling or heat at all. Because PTAC controls take constant handling in hotels, apartments, and assisted-living rooms, the knob and switch contacts are common wear items.
Specifications
| Spec | Value |
|---|---|
| OEM Part Numbers | 1058437 (Knob), 1058517 (Thermostat) |
| Type | PTAC Manual Thermostat |
| Brand | Tempstar / Heil / ICP |
| Control Voltage | 24V |
| Application | Packaged Terminal Air Conditioner |
| Fit | OEM Direct Replacement |
Compatibility
Designed as a direct-fit replacement for the Tempstar THB07R25STA PTAC and other ICP/Heil PTAC units using the same control platform. Always confirm your existing OEM part number against 1058517 and 1058437 before ordering.
Installation Guide
- Safety First – Disconnect power to the PTAC at the breaker or unplug it, and verify zero voltage with a multimeter.
- Access – Remove the front grille and control panel cover to expose the thermostat.
- Document – Photograph all wire positions before disconnecting.
- Remove – Pull off the old knob, disconnect the thermostat leads, and unclip the failed switch body.
- Install – Mount the new thermostat, reconnect wiring per your photo, and press on the new knob.
- Test – Restore power and confirm the unit responds to setpoint changes for both cooling and heating.
Signs You Need a Replacement
- Unit ignores knob adjustments or has no effect on temperature
- Cracked, loose, or missing control knob
- Constant running or short-cycling regardless of setpoint
- No call for cooling or heat from the PTAC
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