All types of memory foam become softer and loses resiliency with age, so permanent body impressions can develop over time. Sometimes, depressions form within months after purchase, especially for overweight people.
As a result, most memory foam mattresses tend to last 4 to 10 years, depending on the quality of the foam and the construction of the mattress.
When compared with memory foam, a spring mattress is stronger and should last longer – if it were not for one very common issue: sagging.
Body impressions, “sink holes,” and “peaks and valleys” in spring mattresses often develop over time. In fact, about 25% of spring mattress owners complain of sagging.
On average, a spring mattress will need to be replaced every 3-10 years.
That said, quality matters a LOT with spring mattresses.
If you purchase a high-quality innerspring mattress like the Saatva, it could last as long as 15-20 years.
Hopefully, this article has helped you sort through the hype to better understand which type of mattress is right for you and your sleeping style.
If you have any questions, please let me know.