Day & Night SYST0101CW Ion™ System control.

Don’t call it a thermostat — mere thermostats simply don’t offer all of the features and functionality of the Ion™ System Control. Offering full command over a communicating comfort system, including temperature, humidity, ventilation, comfort scheduling, energy management and more, this is our most fully-featured control. Anywhere in the connected world, you are just a touch or a tap away from full system control with an internet-enabled device.

Features & Benefits

  • High resolution, smartphone-like touchscreen
  • Wi-Fi® enabled for remote access and control
  • Pair with our communicating, modulating gas furnace; variable-speed fan coil; inverter-driven outdoor units; and zoning system for a complete Ion™ Comfort System
  • Capable of controlling temperatures and fan speeds in up to eight zones
  • Real-time energy use tracking
  • Local weather 5-day forecast
  • Humidity control for enhanced comfort
  • Dual fuel system management capable
  • Auto changeover between heating and cooling
  • Four levels of “constant ON” fan speeds
  • 7-day programming with temperature control throughout the day and week (wake, away, home, sleep)
  • Advanced smart setback for optimal energy savings during “away” and ramp up periods
  • One-button Touch-N-Go® quick-settings-change feature
  • Simple vacation programming controls temperature and humidity
  • System maintenance reminders