How and When to Replace Your Mattress
A longer warranty may not promise a certain lifespan. if you read the fine print. If the mattress is stained because you didn't use a mattress protector, or if you don't use a matching foundation (like a box spring) beneath the mattress, it could invalidate the warranty.
Mattresses last five to 10 years as a general rule. However, you should decide when it's time to replace your mattress based off of other warning signs. Are you waking up sore? Is your mattress feeling lumpy? Do you sleep better on other mattresses, like at a hotel? These are all signs that it’s time to go shopping. Don't forget to extend the life of your new pad by using a mattress protector, which can keep out keep out dust, allergens, spills, and other hazards.