It is only inside air that is getting circulated. Just the fan means you are moving air, but you aren’t cooling it. Systems are installed in a way that they are pulling air in from the outside, typically. Using the fan without cooling is ineffective and often noisy.
Consequently, does fan mode on AC bring in outside air?
The answer is maybe. Most window units have a small opening that allows outside air to be sucked into the fan. If you really want some outside air, open a window. Running the AC in fan only will stir the air.
Secondly, is the fan supposed to be on when the AC is on? Keeping your fan on AUTO is the most energy-efficient option. 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.
Also Know, what does fan mode mean on an air conditioner?
The fan mode shows that the air conditioning system is in ventilation mode. It is one of the most energy-efficient modes to use in both cooling and warming modes. While in this state, the air conditioning is only using the fans to maintain the ambient temperature of the room.
Can I leave my AC fan on all the time?
Setting Your HVAC Fan to “ON” When you set your fan to “ON,” you’re telling it to keep running 24 hours a day, 7 days a week, regardless of the heating or cooling setting. Less frequent starts and stops of the fan can reduce the stress from startup, and potentially help extend it’s lifespan.