Set your budget. Consider the value of a good box spring. Spending a little more might mean a more comfortable sleeping experience.
Decide what size box spring you're looking for. If you already have a mattress, choose a box spring of the same size. If you'll be purchasing a new mattress and box spring, decide which size you prefer for both. Consider the size of your current bed when deciding to upgrade, and make sure you have room for a larger bed.
Choose between traditional or "split" box springs, which come in two separate sections. Box springs for King and California King-size beds are split, while those for Queen-size beds can be either split or traditional.
Decide on the height for the box spring. The standard height is nine inches. Low-profile box spring options are only about five inches high. If you have a taller mattress, selecting a box spring with a lower profile will keep the overall height of your bed more manageable.
Compare the options at whatever furniture store you've chosen to visit. Test the box spring and mattress sets for comfort and support. Decide which box spring best meets your needs.
Ask if the furniture store has a return policy for box springs. Some offer an exchange program for beds that allow you to switch for a different bed of equal or greater value.