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Honeywell Compatibility Checker
Use to determine if a Honeywell thermostat is compatible with your heating and cooling system.
Go to the Compatibility Checker
Compatible Systems
Note: Use this table for reference only. For a more definitive answer on your system’s compatibility, please use the compatibility checker above.
| Compatibility | Honeywell T9 | Honeywell Smart Color | Honeywell T5 Smart Color |
| Natural gas, oil | ✓ | ✓ | ✓ |
| Electric heating | ✓ | ||
| Single stage heating and/or cooling | ✓ | ✓ | ✓ |
| Single stage heating with two stages of cooling | ✓ | ✓ | ✓ |
| Two stages of heating with one stage of cooling | ✓ | ✓ | ✓ |
| Single stage heat pump with/without AUX heat | ✓ | ✓ | ✓ |
| Single speed fan | ✓ | ✓ | ✓ |
| Single stage heat pump with separate single stage furnace heating (Dual fuel) |
✓ | ✓ | ✓ |
| Single stage heat pump with separate two stage furnace heating (Dual fuel) |
✓ | ✓ | ✓ |
| Two stage heat pump with/without AUX heat | ✓ | ✓ | ✓ |
| Two stage heat pump with separate two stage furnace heating (Dual fuel) |
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| Humidifier or dehumidifier | |||
| Dual transformer systems | |||
| Two stages of cooling and two or three stage furnace heating |
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| Two or three speed fan | |||
| PTAC systems |
Installation Help
Get more installation help with step by step videos.
Need more help with wiring, installing and setting up your thermostat?
Have a question about the C-wire?
If after reviewing the compatibility and installation information, you learn that an Honeywell thermostat will not work for you, please consider the other smart thermostats available at our store.