Does ecobee3 Lite Smart Thermostat work without 5 GHz Wi-Fi?

Yes. ecobee3 Lite Smart Thermostat connects over 2.4 GHz Wi-Fi, so it doesn't need a 5 GHz network.

Heating · Ecobee

ecobee3 Lite Smart Thermostat - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Energy Star Certified - DIY Install, Black

Name: ecobee3 Lite Smart Thermostat
Brand: Ecobee
SKU: B06W56TBLN

HomeKit Thermostat Wifi 2.4 GHz

ecobee3 Lite Smart Thermostat works with Apple Home (HomeKit). It connects over Wi-Fi 2.4 GHz.

Last updated: October 25, 2026

Save up to 23% annually on heating and cooling costs (compared to a hold of 72°F)
Control from anywhere using your Android or iOS device
Add SmartSensor to manage hot or cold spots and deliver enhanced comfort to the rooms that matter most
Automatically pauses your heating or cooling when a door or window is left open (requires ecobee SmartSensor for doors and windows and a Smart Security subscription)
ecobee was named an ENERGY STAR Partner of the Year award winner
Integrates seamlessly with your preferred smart home system. Connectivity - Wi-Fi, 802.11 b/g/n @ 2.4 GHz
Compatible with most 24VAC HVAC systems: furnaces, ACs (2H/2C), heat pumps (2H/2C + 2 stage AUX), boilers, PTACs, and fan coil units (3 fan speeds). Includes Power Extender Kit for C-Wire-less homes, ensuring easy installation. DHCP (dynamic) or static IP addressing 168 bit SSL encryption

Does ecobee3 Lite Smart Thermostat work with Apple Home?: Yes, ecobee3 Lite Smart Thermostat works with Apple Home (HomeKit).
Does ecobee3 Lite Smart Thermostat work without 5 GHz Wi-Fi?: Yes. ecobee3 Lite Smart Thermostat connects over 2.4 GHz Wi-Fi, so it doesn't need a 5 GHz network.