Gas furnaces use natural gas to heat air as it moves through a series of ducts, which then is sent to your house via grilles and registers. Typically, homeowners don’t get excited about having to replace their gas furnace. However, the idea of freezing in your home isn’t too exciting either. Despite efforts to prolong its life, there may come a time when it is better to replace your furnace rather than repair it. The replace decision often comes down to your current furnace’s age, condition, and/or performance. Amana brand furnaces are efficient, reliable, and will bring your home warmth in the colder months for many years.