Are cheap WiFi thermostats reliable?

Yes. The thermostats in our list are from established brands with strong track records. WiFi connectivity is stable, and firmware updates keep them current. Budget models may lack premium features but core temperature control and scheduling are equally reliable.

Can a WiFi thermostat really save money on energy bills?

Absolutely. The EPA estimates smart and programmable thermostats save an average of 8% on heating and cooling bills. WiFi thermostats add the advantage of remote adjustments and geofencing, so you never heat or cool an empty home.

Best WiFi Thermostats Under $100 2026