How Often Should I Change My Mattress?

When To Replace Your Mattress

The simple answer is: when you are no longer sleeping well on it. If you wake up feeling tired, stiff, or achy, and those symptoms ease once you get moving, your mattress is the most likely cause.

The average person spends roughly a third of their life in bed. Over ten years, that adds up to around 30,000 hours of use. Even a well-made mattress will lose support and comfort over that period.

How Long Should A Mattress Last

Most mattresses are designed to last seven to ten years. Manufacturers sometimes claim longer lifespans, but their guarantees typically cover materials and defects rather than comfort and support.

Several factors affect how quickly a mattress wears out:

• Frequency of use: a guest room mattress will last considerably longer than one used every night.
• Body weight: heavier sleepers put more strain on the materials, which accelerates wear.
• Activities: regularly sitting on the edge of the bed, or children using it as a trampoline, shortens the lifespan.
• Mattress quality: higher-density foams and higher spring counts tend to hold their shape longer. As a general rule, a more expensive mattress will maintain its support for longer than a budget one.

How To Check Your Mattress

Manufacturers recommend examining your mattress at least twice a year. Look for:

• Visible sagging, particularly in the hip and shoulder areas
• A lump or ridge forming in the centre
• Protruding springs or soft spots where support has failed
• Rips or tears in the fabric covering
• Creaking or squeaking from the springs when you move

If you notice any of these, the mattress is past its best and should be replaced.

Allergies And Hygiene

Over time, mattresses accumulate dust mites, dead skin, sweat, and other allergens. After ten years, the weight of a mattress can increase noticeably from the build-up alone.

If you suffer from allergies, asthma, or rhinitis, this is a particular concern. Dust mites thrive in the warm, humid environment inside a mattress and are almost impossible to remove once established. Washing bedding at 60°C kills mites in the fabric, but the mattress interior is harder to treat.

If allergies are a concern, look for mattresses with hypoallergenic and anti-microbial properties when you replace yours. Memory foam and latex mattresses are generally more resistant to dust mites than traditional sprung models. Our memory foam guide and latex guide cover this in more detail.

What To Do Next

If your mattress is showing signs of wear, our firmness guide can help you decide what to look for in a replacement. For current prices across UK retailers, check our mattress listings page.