When considering replacing your furnace, it is common to want to know how long your new furnace will last. It is a large investment, so it is understandable to consider the longevity of your new heat supply. However, there is not a simple answer to the question as it can depend on many different factors. Here is some basic information on furnace life-spans and what you can expect.
The main component in a furnace that determines when it may need replacement is the heat exchanger. While other components are easily replaced, once the heat exchanger fails, that is usually the time to replace the whole furnace. Decades ago, the heat exchangers in furnaces were built using heavy metals like cast iron that could last 30 or more years. However, these older models were not as efficient. Newer models use stainless or aluminized steel for their heat exchangers, lasting 15-25 years in most cases, but providing improved energy efficiency.
So, how do you get the longest life from your new furnace? The best option is to begin a solid maintenance plan from the beginning to reduce wear and tear on the equipment. Annual tune-ups on your furnace should be planned to keep it maintained. Also, follow the manufacturer recommendations for replacing air filters to reduce stress on the system and keep humidity low to reduce risk of rust. If the A/C unit is on top of the furnace, make sure the coil and drain is kept clean to avoid it overflowing onto your furnace’s heat exchanger, which can also cause rust.
With regular maintenance, you can expect your furnace to last for 15-20 years or more. Make sure to keep up with your annual tune-ups and other maintenance to extend the life of your new furnace.
Posted on behalf of:
Western Aire Heating & Cooling
264 Buchanan Highway
Dallas, GA 30157
(770) 505-7426
