There are many homeowners who are not familiar with HVAC units, and often learn the in and outs of them only when it is too late, and when they are about to replace one because of their lack of knowledge about upkeep and how to properly run them. One of the most common questions that HVAC companies receive is customers asking whether they should set their units to fan or auto, or to keep them continuously running. This is a topic that has both pros and cons, and both will be explored here.
When the unit is set to the “on” setting, you are instructing it to stay running 24 hours a day, every day of the week. This is regardless of the heating or cooling setting. A few positives to this feature are:
There are also downsides to keeping your HVAC fan on the continuous setting. While it can be more energy efficient at times, the constant running could cost you hundreds of dollars more every year.
Putting your fan on the auto mode gives the unit the ability to decide when the fan needs to be engaged and is much more cost effective and works with the heating and cooling system so that the fan runs at the slowest speed and for the least amount of time that it is needed. This saves on wear and tear of the unit, and therefore can help make your furnace last longer. This method is not quite the answer many are looking for; with this setting there is less even distribution of heating and cooling. And once the thermostat has done its job, the fan will stop moving air to other areas throughout the home. However, setting your fan to auto can help you save money and wear on your unit.
If you’re still concerned about lack of circulation, one may want to consider upgrading to newer grade thermostats that now have a “circulate” option- this will allow the fan to be set to the “on” option for a certain amount of time every hour. This in turn can lower bills and give an increased comfort level throughout the home.
For more information about running your HVAC, or to consult a professional about a repair or upgrade, contact AirOne Heating and Air Conditioning Repair, located in San Marcos, TX.