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
Supported?
Gas/Oil/Electric heating
Yes
(up to two stages)
Heat pump with auxiliary heat
Yes
(up to three stages)
Geothermal Heat Pump
Yes
Dual fuel systems
Yes
Standard electric cooling
Yes
(up to two stages)
Boilers Yes
3
Summary of Contents for Smart Si
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