How Long Do AC Units Last (And Why)?

How Long Do AC Units Last (And Why)?

Exact Answer: 10 to 20 years

Many home appliances can be an extravaganza, while some are absolute necessities. When someone enters a house, there are certain things they look for and certain appliances and decor that catch their eye in every home. Certain appliances are found only in a home, while some are found in houses. Some are inbuilt, some are not, some are bought and then attached according to the house or offices’ inmates.

One such appliance, that is found in almost every house and office in the world right now, which many consider as a luxury, while some consider as a necessity, are AC units. For countries and states that are not too hot in the summer or at any time of the year, AC units are not a necessity.

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How Long Do AC Units Last?

Type and care of the AC unitsTime
The minimum lifespan of AC units10 to 15 years
When the AC units are well taken care of15 to 20 years
The average lifespan of AC units10 to 20 years

Although, the countries that are very tropical and have hot summers or climates with high temperatures around the year, require AC in their houses. It is a pretty easy task to buy, fix and maintain the AC.

With the proper amount of care, they can even last longer than they actually should. Everybody who owns an AC unit has the question of how long they will last, and the answer to the question lies in different factors.

There are many things the owner can do, that can increase the life of the AC unit. From the minute they are installed, the clock starts ticking and the factors that affect the lifespan of the AC start changing and influencing.

Sometimes, the temperature both outside and inside the room can be very high and completely intolerable and at times like these, AC units can be used. Air conditioners can be used to cool the interiors of a room when the temperature is hot. Air conditioners are an important requirement in houses, offices, and buildings in areas where the temperature constantly keeps rising in the summer, and also in other seasons.

Why Do AC Units Last That Long?

The build of the AC, the size, cost, how they are installed, and how well they are maintained determine how long the AC unit lasts. One should know when they should replace their AC units because, sometimes when broken AC units are run, the dust coming out of them can cause great breathing problems.

The average lifespan of an AC unit is around 10 to 20 years, according to the US Department of Energy and there is a slight difference even in that. The older AC units can last around for around 10 to 15 years, while the modern ones can last for 15 to 20 years when taken good care of.

The AC can even last longer for a little while with the right care. There are some necessary things that one can do, like servicing it regularly and changing the filters every 1 to 3 months. You should also remove the debris, and clean the casing outside of the AC units.

The refrigerant insulation in those AC units should also be changed and replaced.


When the lifespan of a person’s AC units might sometimes be low-end, but when all those maintenance tips are followed, the AC units that last for around 10 to 15 years, can even last for 20 to 25 years, which saves a lot of money.

Yet, if just some of the main tips are followed, the AC units can easily last for around 15 to 20 years. Even the price of the AC units, the brand plays a very great role.

The factors that determine when the AC units must be changed include its age based on its type and brand, the SEER rating, which is abbreviated into Season Energy Efficiency Ratio, the R-22 usage, and the total overall efficiency.


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Hi! I'm Nidhi.

Here at the EHL, it's all about delicious, easy recipes for casual entertaining. So come and join me at the beach, relax and enjoy the food.

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