Sealy does recommend replacing a mattress approximately every seven to ten years, depending on various factors such as individual comfort needs, usage, and care. Over time, mattresses can develop signs of wear and tear, such as sagging, lumps, or a reduction in support, which can affect sleep quality and overall comfort. The type of mattress may also influence its lifespan; for instance, hybrid or foam models may differ in durability compared to innerspring varieties. It is important to regularly check for any visible signs of damage and to assess personal comfort during sleep. If the mattress no longer provides the support needed for a restful night's sleep, it may be time to consider a replacement. Keeping abreast of Sealy's maintenance tips and product guidelines available on their website can help in extending the life of the mattress and ensuring optimal sleeping conditions.