Hvac System Compatibility Information - Ecobee Smart Si Installation Manual

HVAC System Compatibility
Information
The Smart Si thermostat is designed to operate
with low-voltage heating and cooling systems.
It is not designed for use with line-voltage or
millivolt heating and cooling systems.
The Smart Si thermostat supports:
Up to 2 heat and 2 cool stages on a
conventional system.
Up to 3 heat and 2 cool stages on a heat
pump system.
The ecobee Smart Si thermostat supports the
following equipment:
Equipment
Gas/Oil/Electric heating
(up to two stages)
Heat pump with auxiliary heat
(up to three stages)
Geothermal Heat Pump
Dual fuel systems
Standard electric cooling
(up to two stages)
Boilers
Supported?
Yes
Yes
Yes
Yes
Yes
Yes
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