I love touch display screen thermostats. This came up today, when a Carrier Infinity controller died and had to be replaced by an upgraded model, which looks and acts totally different. Sure, the new one is wifi, but this application didn't matter to the 88 year old resident. The issue that I hate about this job today is the price of the manufacturer specific controller. YOU MUST USE THE CARRIER INFINITY SPECIFIED THERMOSTAT/CONTROLLER. And get this:
You must pay $1000 for this product. Really? Are hvac manufacturers crazy? I think so when it comes to controls. That is why NEST and Ecobee, and even industry stalwart Honeywell is winning vs the manufacturers.