A good place to start is to compare your oil or natural gas furnace age to the national average.
What is the life expectancy of a natural gas furnace.
The question is how many years can you reasonably expect a furnace to continue delivering warm air.
The average furnace whether running on gas or electricity works using a collection of crucial parts.
How old is your furnace.
For homes located in florida and the surrounding coastal region please refer to internachi s florida estimated life expectancy chart for homes.
Know how to tell your furnace is at the end of its life and what to look for in a replacement.
Here are some factors that will affect how long your furnace will last.
Discover what ages a furnace and ways to extend its life.
Typically the heat exchanger is the component which defines a furnace.
Remember your furnace doesn t run on one component alone.
In older furnaces the heat exchanger was good for about up to 15 years with a high end expectancy of 20 years if regular maintenance was performed.
If your furnace is close to this age or older you should begin shopping.
As long as you have scheduled yearly furnace maintenance your furnace should easily last over 15 years.
The average age for gas furnaces.
Some furnaces last considerably longer than the statistical averages.
The life expectancy of mid and high efficiency furnaces is more difficult to predict since these systems have not been around as long as conventional furnaces.
Furnace life expectancy like any other product will vary greatly for a number of reasons.
The following chart details the predicted life expectancy of appliances products materials systems and components.
The average life expectancy of furnaces in homes today is between 16 and 20 years.
The quality of the equipment.
If you follow.
Between 15 and 20 years.
While some furnaces can last over 40 years extremely rare the average lifespan of a typical gas furnace is around 15 30 years.
So the answer to the question how long does a furnace last is complicated.
Some sources report the average lifespan of a gas furnace to be only 15 years.
A gas furnace made in the early 1970s typically has an afue of about 65 percent.
So to answer the question of what is the life span of a furnace one must define what the furnace is.
Estimates for the average lifespan of a gas furnace vary widely.
There are a number of contributing factors that determine the age a furnace reaches.
The lowest efficiency allowed by law for new gas furnaces is 78 percent and some new models achieve 97 percent.
If your furnace is getting older you may be wondering how long you can expect it to last.