How often should you replace a tempurpedic mattress? Conventional wisdom states you should replace your mattress once every 10 years. Of course, this number is dependent on how often you use the mattress and how well you care for it, but it’s a good rule of thumb for your primary bed’s lifecycle. Here are two reasons why we advise not keeping it longer than 10 years.Where to buy tempur pedic mattresses? You can purchase TEMPUR-breeze mattresses directly through the Tempur-Pedic website or in person at Tempur-Pedic stores. You can also buy them online at US Mattress, Mattress Firm, Wayfair, and other online retailers. Check out the different sleep trial and return options at each retailer, since it might differ from one to the next.What is mattress warranty? A warranty is a manufacturer's written statement that guarantees the quality and performance of a mattress. Warranties protect customers from being stuck with a faulty mattress because manufacturers replace products that do not perform as promised. Typically, warranties cover any manufacturer defects in mattresses.