A coil mattress usually lasts for 10 or more years if it is a high-quality product. Some experts suggest replacing your mattress after eight years. This lifespan is similar to many other styles of bed, including innerspring models, which are the most closely related to individually wrapped coil mattresses.
Since the coils are independent of one another, some spots in a wrapped spring mattress may age faster than others. For example, if you sleep on one side of the bed, the springs that usually support your body could lose some of their tension and supportive capabilities over time. The timeframe for this aging depends on the quality of the spring.
There is a method to avoid having some spots in your bed sag. You can rotate your mattress so that the springs age evenly. Since coils on a wrapped spring mattress are symmetrical, you can also flip the mattress over. Other factors, including the density of the springs and the number of coils inside the bed, can also affect lifespan.
The fabric wrapping that contains the springs also matters. If a spring breaks out of the wrap because of low-quality fabric, it could push up through the padding or fall out of place and not provide any support whatsoever. For this reason, quality fabric is vital for the longevity of an individually wrapped spring mattress.