A smart thermostat is a Wi-Fi-connected, app-controlled controller that adds intelligence beyond a basic programmable thermostat. Common features include schedule learning, geofencing (auto-adjust when you leave or return), occupancy sensing, energy reports, and integration with home-automation ecosystems.
Major brands include Nest, Ecobee, and Honeywell T-Series. Some utilities — including Dominion Energy SC — offer instant rebates on qualifying smart thermostats and may provide additional bill credits for enrolling in demand-response programs.
Compatibility check: variable-speed and communicating HVAC systems may not work with all smart thermostats. Verify with your equipment manufacturer's compatibility list before purchase.
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