SHOULD YOUR FURNACE FAN ALWAYS BE ON?
Is there any better feeling than warm air coming from your vent on a cold night? Your furnace and central air systems work hard for you throughout the year, but few people consider the fan as a separate mechanism.
You know it comes on when you use the central air or furnace, but there is also a choice to keep it on all the time. Many people enjoy having the fan on around the clock, but some concerns go with it.