How to Set a Honeywell Round Thermostat

Written by cheryl torrie
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Honeywell's round thermostats have the shape of the classic mercury thermostat, but they don't operate the same. The electromechanical model's face has the room temperature on the bottom and the thermostat setting on the top, but if you open it up you'll see there is no mercury float that can be bent to affect your settings. The digital round thermostat's lit digital display makes it a pleasure to set. The instructions for setting either are the same.

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  1. 1

    Set the function of your Honeywell round thermostat by locating the lever on the top left-hand side of the thermostat that can be set at cool, off or heat. Your Honeywell thermostat controls your heating and cooling equipment. Select the function you want to use. Simply move the lever to the "heat," "cool," or "off" position.

  2. 2

    Set the fan setting on your Honeywell round thermostat using the lever on the right-hand top of your Honeywell round thermostat that can be set to "fan," "off," or "auto." Typical operation of your heating and cooling system is when the fan setting equals "auto." This will have the fan come on with the furnace or air conditioner rather than running all the time. The fan setting will keep the fan running even when no temperature change is needed.

  3. 3

    Set the temperature selection by turning the face of your round thermostat towards "cool" or "heat." Here's where you come into one or two or maybe even a hundred different schools of thought. If the only consideration is your personal comfort within your home, simply turn the outer ring of your Honeywell round thermostat until the setting displays your preferred heating or cooling temperature. If you are attempting to control your heating and cooling utility bill, set your temperature at the recommended heat and cool temperatures for your area. For example, 20 degrees C is often recommended as a heat setting, and 22.2 degrees C is recommended for an air conditioning temperature, but you will see a wide range of temperatures listed as the optimum indoor temperature--almost as many possibilities on the Honeywell temperature dial. There is no right or wrong temperature setting, so simply set the temperature with a twist of the dial.

Tips and warnings

  • Remember to set the lever to heat or cool when making the seasonal switch.
  • Honeywell's round thermostats are not programmable, so you will control settings for each day of the week, and you can reduce or increase your weekday temperatures if you spend the majority of the day away from home.

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