Warranty is one of these things you don’t care about until something goes wrong. When that happens, it might be to late to find out what is and what is not covered. Warranties vary between brands and products greatly. Their purpose is to protect consumer against manufacturer’s defects for certain period of time and do not include wear and tear. One of the most frequently occurring defects is excessive sagging - an indentation/imprint/depression greater than 1.5” for majority of mattresses and ¾” for some specialty mattresses.
Warranty claim process could be quite exhausting and could take several weeks or months to complete. You may be responsible for the fees associated with the shipping, delivery and processing your claim. Some retailers act as intermediaries and they facilitate the warranty process of the products they sold. Most warranties start with a full mattress replacement for an initial period of time, and change to a limited (prorated) warranty as years go by.
Non-Prorated or unlimited warranty will cover full replacement value of your mattress or box spring if it is found to be defective.
Prorated or limited warranty will cover only a portion (percentage) of the cost of repair or replacement, based on the amount of time or wear left.