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 about Heating & Cooling
Lighting a gas furnace involves turning off the pilot valve, lighting the pilot with a long fireplace match, then turning the gas knob to the On position. This process takes less than half an hour.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 >
On average, a furnace will cycle every 10 to 20 minutes. The amount of time between cycles is dependent on a number of factors, including the outside air temperature and the temperature at which the thermostat is set.Full Answer >
To clean a furnace, vacuum off the burners, and then get the debris off other important components, including the blower, flame sensor, surface igniters and pilot. Change the furnace filter to keep your furnace operating at its peak for another year.Full Answer >