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Thermostat Compatibility Guide

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Honeywell Compatibility Checker

Use to determine if an 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 T9 with Sensors Honeywell 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)

 ✓

Humidifier or dehumidifier

 

 

 

Dual transformer systems

 

 

 

Two stages of cooling and two or three stage furnace heating

 

 

 

Two or three speed fan

 

 

 

PTAC systems

 

 

 

Installation Help

Get more installation help with step by step videos.

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Need more help with wiring, installing and setting up your thermostat?

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Have a question about the C-wire?

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If after reviewing the compatibility and installation information, you learn that an Emerson Sensi thermostat will not work for you, please consider the other smart thermostats available at our store.

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