What is the difference between auto and fan on a thermostat

AUTO means that the fan turns on automatically only when your system is heating or cooling air. Once the thermostat reaches the desired temperature, the entire system shuts off until the next cycle. ON means that the fan is constantly on and blowing air when your HVAC system is not heating or cooling air.

Have questions or need service on your HVAC system? Contact us today. The fan only runs when the system is on and not continuously. There is better dehumidification in your home during the summer months. When your fan is set to AUTO, moisture from cold cooling coils can drip and be drained outside.

If your fan runs continuously, moisture does not have a chance to drip outside. Just thought you should know. See you next time. I had to replace my hvac unit recently. I was very satisfied with every phase of this purchase from the salesman to the installation crew. I will recommend American Heating and Cooling to all my friends. Read More Reviews. HVAC Services. Air Conditioning Services. AC Repair. AC Installation.

Heating Services. Heater Installation. Heater Repair. HVAC Products. Ductless Mini-Split Systems. Gas Line Installations. Smart Thermostats. The fan can be controlled through a timer circuit inside the unit. Generally, the auto setting will start the furnace fan about half a minute after the burner is lit. The fan is turned off about a minute after the desired temperature is reached. However, more starts and stops will mean that the fan will wear out more quickly.

In addition, it will result in the less efficient distribution of heat inside the room. Smart thermostats come in a variety of sizes, shapes, makes, and models, but—regardless of which one you buy—they all have one feature in common: automated temperature settings.

This helps homeowners save money because it removes the human element—that is to say, you personally having to turn the dial before leaving for work—from the equation. This makes it one of the best ways to make your home more energy-efficient. Other tips include:. If you want more information about thermostats, as well as installation tips from certified and professional technicians in Albuquerque and Santa Fe, New Mexico, contact us at Wagner.