How often should you change your mattress? Signs & expert tips

When was the last time you thought about your mattress? If you're like most people, the answer is probably “not recently”—and that’s perfectly normal. But considering we spend nearly a third of our lives in bed, it's worth asking: how often should you change your mattress? An old or worn-out mattress doesn’t just affect your sleep; it can impact your posture, your health, and even your mood. In this guide, we’ll uncover how long a mattress should last, the signs you need a new one, and practical tips to extend your mattress lifespan—so you can sleep better, feel better, and wake up refreshed every day.

How long should a mattress last?

The average mattress lifespan typically ranges between 7 and 10 years, but the exact figure depends on several factors, including the type of material, build quality, and how well you care for it. For example, latex mattresses tend to last the longest—often up to 12 years or more—while innerspring beds may start to lose support much earlier. Memory foam and hybrid mattresses usually fall somewhere in the middle, lasting around 8 to 10 years with proper maintenance.

So, how long should a mattress last before it starts to impact your sleep? There’s no one-size-fits-all answer, but a good rule of thumb is to monitor its comfort and support from year seven onwards. If you notice sagging, lumps, or waking up sore despite a good night’s sleep, it might be time to ask yourself, how long does a mattress last in your case—and whether it’s time for an upgrade.

7 signs you need a new mattress

You wake up with aches and pains - morning stiffness or back pain can be a sign that your mattress no longer provides adequate support for your spine and joints.
Visible sagging or lumps - a mattress that dips in the middle or has uneven surfaces will no longer offer even weight distribution, leading to discomfort and poor sleep posture.
You sleep better elsewhere - if you get a better night’s sleep in a hotel or on someone else’s bed, it’s a strong indicator that your own mattress isn’t doing its job.
Increased allergies or asthma symptoms - over time, mattresses accumulate dust mites, mould, and allergens. If you’re sneezing more at night, your bed could be the culprit.
It’s over 8 years old - even if it still looks fine, most mattresses start to lose their performance with age. Ask yourself: when should you change your mattress—and how long it’s been since your last replacement.
You feel your partner’s every move - if you’re constantly disturbed by motion transfer, your mattress may have lost its structural integrity and no longer isolates movement effectively.
It just doesn’t feel comfortable anymore - sometimes the clearest sign you need a new mattress is simply that it doesn’t feel right. Discomfort, restlessness, or waking up tired are all red flags.

How to choose the right mattress

With so many mattresses on the market, finding the perfect one can feel overwhelming. The key is to focus on your personal sleep needs. Do you sleep on your back, side, or stomach? Back and stomach sleepers often benefit from firmer support to keep the spine aligned, while side sleepers usually need a softer surface to relieve pressure on the hips and shoulders. Mattress firmness isn't about quality—it's about comfort and alignment.

Material also matters. Memory foam beds are great for contouring to your body and minimising motion transfer, which is ideal for couples. Latex mattresses offer more bounce and are naturally hypoallergenic, while hybrid options combine the best of both worlds: foam comfort layers with innerspring support. Think about whether you tend to sleep hot as well—some materials trap heat more than others, so cooling gels or breathable layers might be worth the investment.

Lastly, always test before you commit. If you can, lie on the mattress in-store for at least 10 minutes in your usual sleeping position. If buying online, check the return policy—most reputable brands now offer sleep trials of 30 to even 100 nights. After all, when you're deciding how often to change mattress, choosing the right one in the first place will make that decision much easier down the line.

5 easy ways to make your mattress last longer

Use a mattress protector - a high-quality protector shields your mattress from spills, sweat, and allergens, keeping it cleaner and healthier. It’s a simple, low-cost way to prevent damage and prolong your mattress’s life.

Rotate it regularly - rotating your mattress every 3 to 6 months ensures even wear across the surface. This helps avoid dips or soft spots that can reduce comfort and support over time.
Support it with a proper bed base - a good-quality bed frame or base provides crucial support, especially for foam or hybrid mattresses. Without it, the structure can sag prematurely, shortening its usable lifespan.

Keep pets off the bed - as much as we love them, pets can bring in dirt, fur, and even moisture that damages mattress materials. Consider a cosy pet bed nearby instead to protect your investment.
Air it out and clean it - vacuuming your mattress and letting it breathe every few months helps remove dust and prevent mould growth. This not only extends its freshness but also makes it more hygienic and comfortable in the long run.

Knowing how often should you change your mattress can make a real difference to your sleep quality and overall health. By recognising the signs, choosing the right type, and caring for it properly, you’ll get the most out of your investment. After all, a good night’s sleep starts with the right foundation.

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