ecobee thermostat: Snowflake icon blue, or a blue ring around the edge
The thermostat is actively calling for a cooling cycle to run.
Applies to: ecobee smart thermostats (icon or ring depends on the model). What you see: a symbol and a light.
What to do
ecobee Support gives no step for this on the page cited; the meaning above is all it says.
Same symbol, elsewhere: A snowflake on a boiler’s own panel means frost protection, not cooling.
Source
ecobee’s own help page, read on the date shown.
- ecobee Support: Cooling: Basics and FAQ — ecobee smart thermostats, including Smart Thermostat Lite and Essential. support.ecobee.com Checked 2026-09-29.
A similar symbol on other thermostats
The same symbol on another maker’s thermostat can mean something else.