Description
Heat Pump Thermostat — Optimized Control for Heat Pump Systems
Specifically designed for heat pump systems with 2 Heat / 1 Cool stage control. Includes O/B reversing valve terminal for proper heat pump operation in both heating and cooling modes.
Technical Specifications
| Model / SKU | 05284948 |
| Brand | Professional |
| Thermostat Type | Heat Pump Thermostat |
| Stages | 2 Heat / 1 Cool |
| Voltage | 24V (Low Voltage) |
| O/B Terminal | Yes — Reversing Valve Control |
| Weight | 0.8 lbs (0.36 kg) |
| Price | $49.24 |
Installation & Product Tips
- O/B Terminal: The O/B terminal controls the reversing valve on your heat pump. Set O/B to "O" for Carrier, Trane, and most brands (energize on cooling). Set to "B" for Rheem/Ruud (energize on heating). Check your heat pump manual.
- Emergency Heat: In cold weather, if the heat pump cannot maintain temperature, the thermostat can activate emergency/auxiliary heat (electric resistance strips). This is normal operation.
- Auxiliary Heat Lockout: Some thermostats have an outdoor temperature lockout for auxiliary heat. Set this to prevent the backup heat from running when the heat pump is sufficient.
- C-Wire: Heat pump thermostats require a C-wire for continuous power. Verify your wiring includes a C-wire before installation.
- Balance Point: The balance point is the outdoor temperature below which the heat pump cannot efficiently heat. Below this point, auxiliary heat supplements the heat pump.
Frequently Asked Questions
Need Help?
Contact our heat pump specialists at https://www.hvacprosales.com/contact-us/ for compatibility assistance.
Contact our heat pump specialists at https://www.hvacprosales.com/contact-us/ for compatibility assistance.
Why Buy From HVAC PRO Sales?
✅ Authorized Dealer — Full warranty support
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