Aprilaire Model 8466 Thermostat

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The universal Aprilaire Model 8466 Thermostat is a programmable thermostat that allows you to create personalized programs based on your lifestyle. This enables you to control your heating and cooling system for total comfort and efficiency.


The Aprilaire 8466 Programmable Dual Powered Universal Thermostat 2-Heat/1-Cool allows you to take total control of the heating and cooling of your home. This programmable thermostat allows you to specify the temperature in your home on a weekly and weekend basis, giving you customizable options for each setting.

Set your temperature preferences by choosing between three stages of heat and two stages of cool. Easily program for the five weekdays, and then choose from either a two day setting on the weekend or a day to day fluctuation. This 4.5 inch LCD screen provides optimal information regarding your temperature, while the touch soft keys make programming your schedule a breeze.

Designed to work with standard systems like gas/electric/oil, single stage, heat pump, multi-stage and millivolt systems, this mercury free thermostat is an excellent choice for your all-encompassing programmable unit. The Aprilaire 8466 Programmable Dual Powered Universal Thermostat comes with a five year manufacturer’s warranty to ensure that your device works properly.


  • Easy to Use Temperature Control ability to override the program schedule at any time
  • Progressive Recovery assures that the heating and cooling equipment starts at the optimum time to reach chosen temperature by the time you want it
  • Multistage Heat Cool or Heat Pump 5/2 or 5/1/1 Day Programming Also can display outdoor temperature.
  • Large LCD Screen high contrast for easy reading
  • Outdoor Temperature Reading for convenience and comparison (requires optional outdoor temperature sensor)
  • Circulate Fan Mode monitors your HVAC system to ensure the HVAC fan operates for some time every hour to provide better indoor air quality plus reduces hot and cold spots within your home
  • Service Reminder tells you when you should change your air filter to protect your equipment and water panel to keep your humidifier running in optimum condition reminds you to service your equipment or whole-home dehumidifier to insure the longevity of your investment


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