How Long Should a Mattress Last?

There isn’t one number that applies to every mattress

Search online and you’ll find plenty of charts telling you a mattress should last seven years, eight years, ten years—or that one type of mattress automatically lasts longer than another.

We might wish it were, but reality isn’t that simple.

A mattress doesn’t suddenly become worn out because it reaches a certain birthday. How it is built, what materials are inside it, who sleeps on it, what supports it underneath and how it has been used all have a much bigger effect on its useful life than the number of years you’ve owned it.

We’ve seen inexpensive mattresses last seemingly forever. We’ve also seen what should be well-built mattresses lose their comfort well before they should. There are many factors that go into mattress life.

So instead of asking only “How old is my mattress?”, the better question is:

“Is my mattress still doing its job?”

Age matters—but construction matters more

There is nothing wrong with using roughly 7–10 years as a point when you should start paying closer attention to an older mattress. But it should not be treated as an expiration date.

Two mattresses that are both eight years old can be in completely different condition.

One might have been built with lower-density foams that have softened considerably. Another might use more durable foams, latex or a heavier-duty support system and still be performing very well.

The same is true of price. An expensive mattress isn’t automatically a durable mattress. Price can reflect upholstery, cooling features, branding, fabrics and other features that have little to do with how well the mattress will hold up.

That’s one reason we pay so much attention to what is actually inside the mattresses we sell.

What usually wears out in a mattress?

People often assume that when a mattress wears out, the springs have failed.

Sometimes they do. But very often, the comfort materials above the support system change first.

Foams soften with use. Fibers compress. Pillowtops can lose some of their original loft. A mattress that once felt supportive can gradually begin to feel softer or less even even though nothing inside has literally “broken.”

This is also why two mattresses with similar-looking specifications can age very differently. Foam density, latex quality, spring construction, edge support and the amount and type of upholstery all matter.

And sometimes the mattress isn’t the problem at all.

Don’t forget what’s underneath it

Before deciding that an older mattress is worn out, look at the foundation, adjustable base, platform or bed frame supporting it.

A mattress follows the surface underneath it. A worn foundation, bowed slats, inadequate center support or an improperly designed platform can allow the mattress to sag or feel different even when the mattress itself isn’t the source of the problem.

We’ve seen mattresses blamed for problems that were actually coming from underneath them.

That’s also why replacing a mattress doesn’t necessarily mean you need to replace the foundation—but it does mean the support underneath the new mattress should be inspected and appropriate for it.

Signs it may actually be time for a new mattress

Age alone isn’t enough. Pay more attention to changes you can see and feel.

A mattress may be nearing the end of its useful life if:

• The comfort has changed substantially. A mattress that used to feel right now feels much softer, harder or less supportive.
• There are persistent impressions or uneven areas. Some settling is normal, particularly in quilted and pillowtop mattresses. Significant or uncomfortable depressions are different.
• You consistently sleep better somewhere else. If another reasonably supportive mattress suddenly feels noticeably better, your current mattress deserves some scrutiny.
• The edge or support system has noticeably deteriorated.
• Your needs have changed. Weight changes, a different sleeping partner or simply changing comfort preferences can make a perfectly usable mattress no longer the right mattress for you.

That last point is important. A mattress doesn’t have to be defective or completely worn out before you replace it. Sometimes it simply isn’t comfortable for you anymore.

Does mattress type determine how long it lasts?

Not by itself.

You’ll often see lifespan charts dividing mattresses into categories such as innerspring, memory foam, hybrid and latex. There is some truth behind the generalizations—certain materials can be more durable than others—but the categories are far too broad to tell you much about an individual mattress.

A hybrid, for example, simply combines a spring system with foam or other comfort materials. That tells you almost nothing about the quality of those materials.

The same applies to memory foam. There are higher-density memory foams and lower-density ones. Calling both mattresses “memory foam” doesn’t make their construction equivalent.

Latex generally has an excellent reputation for durability, which is one reason we like it. But again, the entire mattress construction matters.

What’s inside the mattress is more useful information than the category printed on the label.

Body weight and use matter too

Mattresses are mechanical products subjected to repeated compression.

A mattress used every night by two adults is doing considerably more work than the same mattress in a guest room. Likewise, a larger sleeper generally places more stress on foams, springs and edge materials.

That doesn’t mean larger people simply have to replace mattresses more frequently. It means construction should match the job you’re asking the mattress to do.

It’s one of the reasons we carry heavy-duty mattresses with stronger spring systems, higher-density foams, reinforced edges and more substantial foundations. For someone who is especially concerned about durability—or who has repeatedly had mattresses soften or break down too quickly—those differences can matter considerably.

What about the mattress warranty?

A warranty is not a prediction of how long a mattress will remain comfortable.

A 10-, 15- or 20-year warranty doesn’t mean the manufacturer guarantees that the mattress will feel exactly the same for that many years.

Mattress warranties generally cover specific manufacturing defects under specific conditions. Normal wear, gradual changes in comfort and simply deciding that you no longer like the feel are different issues.

That’s why we don’t recommend judging mattress quality simply by comparing warranty lengths.

So when should you replace your mattress?

When it is no longer giving you the comfort and support you need—and the problem really is the mattress.

If your mattress is eight or ten years old and you’re still sleeping comfortably, it isn’t necessary to replace it simply because an online article says its time is up.

On the other hand, if a relatively young mattress has softened dramatically, developed uncomfortable impressions or simply isn’t working for you anymore, its age doesn’t make the problem less real.

Before replacing it, inspect the mattress and what is supporting it. If you’re unsure, talk to someone who understands mattress construction rather than relying on an arbitrary replacement schedule.

Don’t replace a good mattress just because it’s old

We sell mattresses. Obviously, we’re happy to sell you one.

But we’re not going to tell you that a perfectly comfortable mattress needs to be thrown away because it just celebrated its eighth birthday.

If it’s comfortable, properly supported and still doing what you need it to do, keep sleeping on it.

And when it isn’t, that’s when it’s worth figuring out what changed—and what you want your next mattress to do differently.