The simple answer is NO. Even "smart" thermostats, like Ecobee, with remote sensors do not solve the comfort problem. As a matter of fact, you end up with higher utility bills. To properly solve your home's hot and cold spots, you need to fix the root of the problem. Please click here for more details.

Solving comfort problem in your home means the furnace and/or AC will run less. typically you would achieve savings in the 10% range.

First you need to make sure your furnace and AC are properly sized, running and configured to deliver the proper CFM to each room in your home. Second, you need to make sure your filter is changed regularly (every 3 to 4 months) and that it is not restricting airflow. Third, make sure your duct [...]

study after study have shown that smart thermostats, like Nest, Ecobee, Honeywell etc., do not save you more energy than a low cost programmable thermostat from your local hardware store.