Comfortaire® recommends the use of a our matching wood foundation with our air mattress products. It is required that you put our mattress on a foundation that is solid, study, and flat. We do not recommend a box spring foundation because they often times dip, weaken, and sag. The integrity of a Comfortaire ® is that it will last you a lifetime, by using a faulty boxspring it could effect the longevity of the product and may effect your warranty if your boxspring is in poor shape. If your current foundation is in good shape, no sags, squeaks or cracks, you can use it with your new Comfortaire ®mattress.