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VisionPRO® IAQ Thermostats

VisionPRO IAQ ThermostatsMaximum Comfort Made Effortless.

With Honeywell's VisionPRO® IAQ Total Home Comfort System you can now control comfort and Indoor Air Quality (IAQ) throughout your entire home. VisionPRO IAQ eliminates the need for multiple controls in your living space, by managing your home's temperature, humidification, dehumidification and ventilation - all from a single, easy-to-use touchscreen control.


If you want your home to feel as comfortable as it looks, then VisionPRO® IAQ is the thermostat for you. You'll enjoy the convenience, energy savings and consistent comfort for years to come.



Key Features

  • Contains all features of standard VisionPRO, except arm chair programming.
  • Thermostat connects with Equipment Interface Module or EnviraZone panel to control temperature, humidification, dehumidification and ventilation from a single point in the home.
  • Automatically raises humidity levels throughout all rooms in the home, moisturizing air to prevent symptoms of dryness and to protect hardwood flooring and woodwork.
  • Automatically lowers humidity levels through all rooms in the home, utilizing air conditioning or a whole house dehumidifier to prevent dampness, stickiness or odors; symptoms often associated with air that is too moist.
  • Removes air pollutants by exchanging the stale air in a house with fresh, filtered air better than having an open window.
  • Model Number: TH9421