Conserve · Homeowner guide
How Much Energy Can a Smart Thermostat Save?
Understand typical smart thermostat savings and the installation choices that make the biggest difference.
The short answer
Manufacturer and utility studies commonly report heating and cooling savings around 8–15%, though the result depends on your schedule, insulation, equipment and setup.
The savings come from reducing heating or cooling when the home is empty—not from sacrificing comfort while your family is there.
Where savings come from
Setbacks while everyone is out, sensible overnight settings and seasonal schedules prevent the HVAC system from conditioning an empty home unnecessarily.
Why room sensors matter
A hallway thermostat may not represent the room your family is using. Compatible room sensors can help the system prioritize occupied spaces and improve comfort.
Installation and setup
Compatibility with the HVAC system matters. Professional setup also turns on the schedules, alerts and comfort features that often stay unused after a basic do-it-yourself installation.