The average furnace lasts 15 to 20 years. This life span is typical of a furnace with a stainless or aluminized steel heat exchanger. In contrast, old furnaces with heavy metal heat exchangers last for 30 to 40 years, but they are less efficient than newer models, prompting many homeowners to replace them even if they still work.Know More
Once a furnace reaches 15 to 20 years old, its owner should start shopping for a new one. Shopping early allows a homeowner to research the market and leisurely find the best model for their needs. In contrast, if the homeowner waits until the furnace dies, they are forced to shop quickly.
Rising energy bills are usually a sign that the furnace is nearing the end of its lifespan. As furnaces get older, they run less efficiently. Proper maintenance is one way to keep them running efficiently for longer.
As furnaces age, they tend to need a lot of improvements. Homeowners may find themselves spending hundreds of dollars one year just to repeat the pattern the following year. If a furnace is breaking down yearly, it usually indicates that it needs to be replaced. As the furnace ages, it also takes longer to get replacement parts because the repairman usually has to order them.Learn more in Heating & Cooling
A furnace fan that does not shut off may cause harm to the entire heating system in the home. A couple of simple steps can help check to see if repairs can be completed at home or if professional help is required. Resetting the thermostat, clearing any clogs and replacing the filter if worn or damaged are all easy fixes for basic problems. If these do not help, it is best to get a professional opinion./
The energy efficiency of a propane furnace can range between 80 to above 95 percent, depending on the type and model of furnace being used. While a high efficiency propane furnace generally provide greater savings on energy costs, the difference becomes less obvious in regions with no cold winters.Full Answer >
Troubleshooting a furnace that does not turn off begins with examining it for a malfunction or clog. The thermostat, air filter and fuel supply can all be examined in less than an hour. If the error cannot be identified during these steps, contact your manufacturer and have a certified technician examine the furnace.Full Answer >
To clean a furnace, a person needs foil tape, an air filter, screwdriver and a wire brush. A shop vacuum, strap wrench and combustion analyzer are also needed. If a person is cleaning an oil-powered system, an oil filter and nozzle needs to be available, too.Full Answer >