When it comes time to purchase a new furnace, it’s important to consider efficiency ratings. Energy efficiency refers to how much heat is actually produced by a particular furnace, as compared with how much energy is lost in the production process. When a furnace has a low efficiency rating, you’ll be paying for wasted energy that doesn’t turn into actual heat.
You will also want to consider the type of fuel the furnace requires, and how much that fuel costs. For example, electric furnaces are very energy efficient in terms of output, but the electricity itself can be quite costly.
Manufacturers use the Annual Fuel Utilization Efficiency rating (AFUE) to qualify a furnace’s energy efficiency. The rating lets the buyer know how much heat a furnace will actually produce as compared with the amount of energy that is required to produce that heat. For example, a furnace that is rated at 80 percent AFUE has a 20 percent energy loss, while 80 percent actually becomes heat.
Ductwork doesn’t affect the rating, because each home’s ductwork varies, but it can factor into potential energy loss. Ductwork that runs through attic spaces, for example, can lose as much as 35 percent of the system’s heating efficiency.
New furnaces have AFUE ratings, which is required by the Federal Trade Commission. Older systems may not have this rating, or it may have been removed, since the requirement is relatively new. The following guidelines can give you an estimate of your current furnace’s energy efficiency.
ACS Air Conditioning Systems installs and repairs a wide range of energy efficient furnaces. Call us for a free estimate, and you’ll be sure to find the perfect furnace for your home.
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