What brands make the largest displays for thermostats?

With a 12-square-inch display, Braeburn Deluxe touch screen universal thermostats have the largest thermostat displays, as of 2015. The Deluxe product series includes the 6100, 6300 and 6400 thermostat models, which vary in the number of temperature settings available, type and number of wiring terminals, and presence of humidity controls.

Other large-display thermostat brands include Honeywell and Aprilaire. In the Aprilaire thermostat product line, the 8600 touch-screen model has the largest display. The Honeywell VisionPRO IAQ Total Home Comfort System and individual thermostat models from the WiFi VisionPRO series and VisionPRO 8000 series feature large, 2.75-inch by 3.72-inch touch-screen displays.