Smart Thermostat Savings Calculator

Savings depend on the starting schedule, weather, equipment, occupancy, and how you use setbacks. The calculator uses its selected savings percentage as a planning assumption. Compare the result with at least one heating and one cooling bill after installation.

A programmable thermostat already following an effective schedule may leave less avoidable runtime. The calculator's added-savings percentage is a scenario assumption, not a measured guarantee.

Geofencing can adjust the setpoint when household devices leave or return. Learning schedules can use prior adjustments to propose changes. Their effect depends on the device, household, privacy settings, and whether the changes reduce equipment runtime without sacrificing comfort.

Utility rebates and demand-response payments vary by ZIP code, customer rate, equipment, enrollment dates, and available funding. Check the current program terms with your utility before purchase, then enter a confirmed rebate in the calculator.

Both deliver similar headline savings (10 to 15 percent over a manual thermostat) and both qualify for ENERGY STAR rebates, so the choice comes down to features. Nest Learning auto-builds a schedule, has the cleanest interface, and integrates tightly with Google Home; Ecobee SmartThermostat ships with remote room sensors (so it can average temperatures across rooms instead of just the hallway), has built-in Alexa, and tends to handle multi-zone homes better. If you have one main living area, Nest is usually simpler. If you have a two-story house, kids' bedrooms that run hot, or you want hands-free voice control without buying a separate Echo, Ecobee wins on hardware.