I currently take care of an auto dealership that has 7 locations in my area. They bought 25 filtrete wifi 3m50 thermostats to install for a cheap version of energy mgmt. I have had them installed over a year and have had nothing but issues with these low end units. Has any of you had any success with any other wifi enabled thermostats that is a commercial grade, reliable, dependable? Please share and let me know brand and models and details if possible.