Re: check on that
If you get an AC unit put into your forced air system, it can run all year. Many thermostats also have a "fan only" switch (look for an "on/auto" toggle on the box), which just turns on your furnace fan without either lighting the furnace or firing up the air conditioner. This circulates air through the furnace filter without using a lot of extra gas or power. Ask your AC people about that.