Bob is a service technician who is well trained and nationally certified. However, he has sometimes suffered from the same confusion that all technicians occasionally do — the facts that he gathers ...

A furnace filter should be changed about once every three months. A furnace filter should be changed more often in the event of pollen, construction dust, cold spells, or other amplifying factors.

If your heating bill has recently climbed, or your furnace seems to be running more than usual, the problem could be something simple: a dirty furnace filter. It’s easy to overlook, but this small ...

If you notice a funny burn smell when the heat turns on, it may be a sign that your furnace needs maintenance. It could be something as minor as a dirty filter, but it could also be a serious problem ...

Even in the warmer months of the year, you should regularly monitor your furnace filter's condition -- and replace it as needed -- to keep your family safe and your furnace in good working condition.

Dear Ken: Last summer we purchased a new furnace, humidifier and air filter system. They said dust in the house would be cut down a lot, but we've noticed no difference. What's up? - Heather Answer: ...