People often have questions about the proper furnace fan setting for winter. Should the furnace fan always be ON—constantly circulating air? Should it be set to AUTO so that the fan only turns on when there’s a call for heat? There is no one right answer. The correct furnace fan setting will depend on the type of heating system you have and your indoor comfort preference.
When the furnace fan setting is ON, it means the fan is always circulating air throughout the home—even if there’s no heat coming from the furnace. When we get calls asking about the furnace blowing cold air, it’s usually because of the ON setting; the air is room-temperature but can feel colder to people.
Running the furnace fan all the time means there’s less stale air in the home and can also help regulate cool and warm spots. However, this setting uses more electricity to run, which can be a problem if you have an older furnace with an AC motor.
This setting only turns on the fan when there is a call for heat requested. If this setting is selected, you should only feel warm air coming from vents and will notice that the fan cycles on and off throughout the day based on the temperature drop.
Some homeowners have a VENT option, which will turn the fan on for a certain amount of time every hour to circulate air. This can be a good setting for those that want to periodically circulate air throughout the home but don’t want to run the fan 24-hours a day.
The best way to know which furnace fan setting is right for your home and heating system is to ask the installation technician when they review your new furnace system.
If you have any questions, don’t hesitate to contact HAMCO Heating & Cooling,
we’re happy to answer any questions.
HAMCO Heating & Cooling has been serving the needs of Hamilton, Burlington, Oakville and surrounding area since 1946. Our business is as much about our personal reputation and the relationships we build with our customers and neighbours as it is about selling and servicing home comfort systems. We don’t just work here in the area, we also live here and are a part of the community.