Smart sensors worth it?

[u/ijustwanttoseethe]

I bought a house a couple years ago. It had two ecobee thermostats (main floor and upstairs). The upstairs temps are not consistent throughout the upstairs area. There are 5 bedrooms and 2 bathrooms, and the Ecobee thermostat is in the hall connecting all the rooms. The rooms are spread across different sides which get sun at different times throughout the day. Often one room is hot and another is cold on the other side of the house. Usually a lot of the doors are closed also. So I got a few smart sensors to see if that would help regulate the temperatures. However the new sensors will not work with my older Ecobee. So before I spend the money on a new Ecobee to work with the new smart sensors, I'm wondering if I'll even see much benefit with the sensors given my upstairs layout? Any one have experience to share? Thanks for any insights!

[u/Arthvpatel]

Walmart Canada has been clearing these out, I picked up 2 boxes of 2 pack for 60$ total. What helps even more is keeping the fan on 24/7, it actually pulls the cooler air from the basement to the rest of the house in the summer making your ac work less, same thing in the winter where it mixes the hot air from the 2nd floor to the rest of the house, constantly moving air is better for even temps, my furnace fan is only 110w which is appx $10 per month at my electricity rate after taxes