I recently had the following programmable and voice controllable WiFi thermostat installed in our apartment here, a Honeywell Wi-Fi 7-Day Programmable Thermostat (with Amazon Alexa access).
Programmability means that the thermostat can be set so that the apartment is already warm when you get up in the morning and already cool when you turn in for the night.
Wi-Fi means that you can control it remotely by smartphone or simply by voice via Alexa. If you are too cold in the middle of the night you can simply say “Alexa, turn up the thermostat two degrees” without ever getting out of bed.
The cost of the thermostat was about $85 as compared to $25 for a normal thermostat. installation ranges from $150 to $200.
Here the installation was done by the contractor which provides such services to this community, using the latest Honeywell thermostat, a nice choice.
The Wi-Fi setup required that the resident work with the installer so that one person could be at the thermostat and the other at a computer. For the Wi-Fi to work properly the resident should therefore be computer literate. Internet must be working to make any changes away from the thermostat.
If you are considering such an installation, I suggest you download and read the manual for particular term thermostat ahead of time.