Traditional innerspring mattresses generally last about 5.5 to 6.5 years. Padding may wear faster than springs, while visible springs can signal replacement. A topper may add cushioning to a still-supportive, too-firm mattress as a temporary fix; for apparent sagging, check the base; a topper cannot restore support lost to significant sagging or permanent impressions.
Sleep Foundation estimates traditional innerspring beds’ expected lifespan at about 5.5 to 6.5 years, describing them as having the shortest expected lifespan in its guide.
Most mattresses overall should last 7 to 10 years, so keep that broader range separate from the innerspring estimate when comparing mattress lifespans.
Tom’s Guide describes an innerspring mattress as a supportive coil base beneath a padded comfort layer, a simple design that makes these beds inexpensive, bouncy, and supportive.
Comfort and transition layers tend to wear out first, mainly because they are usually softer and less dense than support layers, according to Sleep Foundation’s durability guidance.
On a mattress with a thin comfort system, sagging and indentations that have developed may be more noticeable, so pay attention to those signs while assessing that bed.
In an innerspring mattress, foam padding may wear down faster than the springs, leaving the coils to absorb more pressure and eventually lose tension over time.
Tom’s Guide describes Bonnell coils and an updated squared-side version that flexes like a hinge, while Sleep Foundation describes continuous coils formed from one wire.
Bonnell coils
Bonnell coils use thin spiral-shaped helical wires to connect each coil to the next, so they move as a single unit.
Offset coils
The updated version of Bonnell coils has squared sides that flex like a hinge under lighter pressure, while providing tougher resistance as pressure increases.
Check the squared-side construction and hinge-like flex under lighter pressure when comparing this design with another coil type.
The description also notes tougher resistance as pressure increases, so compare both lighter-pressure flex and heavier-pressure resistance.
Continuous-wire coils
Continuous coils use a single wire, formed into rows of loose coils connected by helical wires.
Heavier sleepers may wear out a bed faster than lighter sleepers, especially if it contains soft foam layers. When a heavier sleeper will use the bed, check whether the mattress contains soft foam layers, since wear may show sooner than it would for a lighter sleeper on the same mattress.
Reassess your mattress if you sleep better at a hotel or with family, or if springs are visible or felt.
Tom’s Guide says it is time to replace an innerspring mattress when springs poke through as you lie on it or their outline is visible. Check what you can see and feel at the sleeping surface.
Padding may wear faster than the springs, leaving coils more exposed to pressure and loss of tension. Keep that wear pattern in mind when assessing a mattress where springs are felt or seen.
Before treating a dip as a mattress-only problem, check the base: some apparent mattress sagging is caused or made worse by the base.
Support and handling directions are brand-specific directions in these examples, so check the requirements for the mattress and base you own.
Box spring alternatives
A platform or slatted frame can replace a Serta box spring under its stated spacing and support rules.
Serta permits a platform or slatted frame when slats are no more than 2 inches apart and a center support leg reaches the floor; check both conditions.
For Simmons, slats more than 2 inches apart need a solid platform between mattress and slats, or the mattress may be damaged and its warranty voided.
Mattress handling and rotation
The handling advice differs by brand, so do not assume every mattress follows the same rotating or flipping routine.
Simmons tells owners not to fold, stand, or jump on its mattress because damage can occur; these are the actions named in its warranty guidance.
Leesa recommends rotating its mattress 180 degrees about every 4 to 6 months, not flipping it; check the care guidance for that model before turning it.
A topper may offer temporary help, not a permanent fix, when a mattress remains supportive but feels too firm or lacks cushioning.
A topper may help when a mattress remains supportive but feels too firm or does not provide enough cushioning.
A topper is a temporary fix for an old mattress, not a permanent solution, so it may buy time but is not a lasting fix.
A topper cannot restore support lost to significant sagging or permanent impressions, so check for either condition before relying on extra cushioning.
A topper over a failed support core, springs, or bed base will follow the dip underneath it.
Sleep Foundation says how long a specific mattress lasts largely depends on the type and quality of materials in both the comfort layers and support core, so compare those parts when assessing a specific mattress.
Sleep Foundation describes traditional innerspring beds as having the shortest expected lifespan in its comparison of mattress types. Read it as one guide’s comparison across types, not a fixed limit for every innerspring model.
The cited Leesa guidance recommends rotating its mattress 180 degrees about every 4 to 6 months, not flipping it. It does not establish whether every innerspring mattress can be flipped, so check the care instructions for your model.
The cited sources do not establish whether broken or exposed springs can be repaired, so contact the mattress manufacturer about repair options for your specific mattress.
Nest Bedding lists broken, collapsed, or protruding coils as manufacturing defects; check its warranty to verify whether they are covered.
Simmons warranty text identifies bent perimeter rods in innerspring models damaged by misuse, including moving or bending the sleep set.
We read 14 published pages from 9 sites (Sleep Foundation, tomsguide.com, naturepedic.com, allfoam.co.uk and 5 more), checked in October 2026. Every sentence in the answers above cites one of them; the offer card at the end names its own source. This page reports published sources only; we did not test mattresses in person.