Smart thermostats, zoning and automation can make a home more comfortable with less effort, as long as the wiring, the Wi-Fi and the equipment are ready for them.
On your Wi-Fi
Smart thermostats
Connect to your home Wi-Fi and to an app on your phone
Follow a schedule you set, or learn one from your habits
Many need a C-wire for steady power
Electric baseboard heat needs a line-voltage model instead
Most smart thermostats connect through Wi-Fi, not directly to 5G. If your home has 5G home internet, that is the internet service; the thermostat joins the Wi-Fi network that the 5G gateway creates.
Checklist
Before you buy a smart thermostat
WiringLook for a wire on the C terminal of your current thermostat
VoltageBaseboard heaters need a line-voltage thermostat
Wi-FiCheck the signal where the thermostat hangs
EquipmentConfirm it supports your heat pump or two-stage system
HelpTurn the power off at the breaker before you touch any wire