The short answer is that it depends on the quality of the pool and the level of maintenance provided by the owner.
Typically, a steel above-ground pool purchased from a "big box retail store" can last up to 10-15 years, but liners usually last about 5-8 years and it may be necessary to replace other equipment like the ladder, pump and filter as needed, too.
Those numbers easily could increase to 30-40 years for the pool and 15-20 years for the liner if purchased through a specialty dealer.
Rust is the biggest "killer" of above-ground steel models, so attention to that issue will prolong the life of any pool. Spotting rust and then sanding and spraying on a corrosion element is important. Checking for holes in the liner and repairing or replacing the liner when needed will cut down on rust issues.
Also, it is important to not sit on or jump off the pool rails. The rails are a key part of the structural design of the pool, but are not designed to handle the weight of swimmers.
Proper use of chemicals will extend the life of your pool, as will being careful in the operation of vacuum systems.
Finally, the lifetime of your pool may indeed be "perfect" if you primarily are purchasing it for family fun with your kids. They may be gone when the pool reaches the end of its life! On the other hand, purchasing a quality product from a specialty dealer will increase its resale value and can potentially increase your home's value.
At FamilyPoolFun.com, we have an outstanding selection of affordable above-ground pools, including several resin models guaranteed to last longer than typical steel models. And each pool we sell is backed by an excellent warranty! Plus, we also carry all the pool accessories you need. We offer free shipping and convenient financing, plus great after-the-sale customer service. A no-hassle return policy and friendly technical support make us the best place to buy above ground pools online.
Shop our huge selection of above ground swimming pools or call today to speak with one our friendly sales staff and learn how easy it is to put a pool in your own backyard!