Honeywell Home Compatibility Guide

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Compatibility Wi-Fi 7-day programmable thermostat Wi-Fi color touch thermostat T5 smart thermostat T9 smart thermostat with sensor
Natural gas, oil or electric

gas & oil only

gas & oil only

24VAC controls

Conventional (furnace and air conditioning) up to 2 stages of heat and 2 stages of cool

Conventional (furnace and air conditioning) a single accessory, such as a humidifier, dehumidifier, ventilator, HRV, ERV

 

 

 

 

Conventional (furnace and air conditioning) single-speed fan control

Heat pumps air-to-air and geothermal heat pumps

Heat pumps up to 4 stages of heat (2 stage heat pump, 2 stage auxiliary heat) and two stages of cool

1 stage AUX heat

Heat pumps single-speed fan control

Boilers up to 2 stages of heat
If a C-wire isn’t present—C-wire must come from the air handler, not the boiler. 

Boilers single accessory, such as a humidifier, dehumidifier, ventilator,
HRV, ERV
If a C-wire isn’t present—C-wire must come from the air handler, not the boiler.

Dual transformer (boiler and air conditioning) up to two stage of heat and two stages of cool
If a C-wire isn’t present—C-wire must come from the air handler, not the boiler.

 

 

 

 

Dual transformer (boiler and air conditioning) single accessory, such as
a humidifier, dehumidifier, ventilator, HRV, ERV
If a C-wire isn’t present—C-wire must come from the air handler,
not the boiler.

 

 

 

 

Dual transformer (boiler and air conditioning) Supports single-speed
fan control.If a C-wire isn’t present—C-wire must come from the air handler, not the boiler.

 

 

 

 

Installation help
Get more installation help with step by step videos and more.

Go to the Honeywell Home installation page


Need more support?

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