When investing in an electric furnace, homeowners often wonder: how long will it keep running efficiently and reliably? The good news is that electric furnaces are known for their longevity. On average, an electric furnace will last 20 years—sometimes even longer with the right care and attention. However, a variety of factors can influence exactly how long your system will perform at its best. Here’s what to know about the lifespan, maintenance, and repair of your electric furnace in Navarre, FL.