Knowing the age of your air conditioner is crucial for homeowners looking to maintain an efficient cooling system. An aging unit may struggle to keep your home comfortable, use more energy, and even cost more in repairs. But how can you determine the manufacture date of your air conditioner, and what does that mean for its longevity? In this post, we’ll walk you through how to check your AC’s model year, how long air conditioners typically last, and how to extend their lifespan.