The boxspring fulfills three needs.
Do you really need a box spring under your mattress.
A box spring can fit atop a small foldable metal frame that allows for a headboard and optional footboard to be attached to it or a more solid bed frame should you choose to use one.
What you need is a foundation which doesn t necessarily have to be a box spring.
It is usually built the same size as the mattress it will support and that s why you often are able to buy a mattress and box spring as a set when you buy a new mattress.
Modern mattresses are too heavy for a traditional box spring.
The short answer is no you don t need a box spring for your mattress.
If you want to put in on the floor on a rug or anywhere else you can think of that is ultimately up to you.
However you really don t need a box spring with a mattress.
The fact is that there are several alternatives to using a box spring below your mattress.
For example the online mattress company lull says its mattress will work with anything.
In some cases adding a box spring to your mattress enhances the comfort and support you get from your bed.
Some companies prefer that you put your mattress on slats or a box spring to help the mattress breathe but it s certainly not necessary.
So you no longer need a box spring to absorb the mattress weight or motion.
For a little more you can buy an entire bed with a slat system from zinus.
Several online mattress companies including leesa specifically ask that you do not place the mattress on a box spring.
A boxspring is a support for your mattress and is typically constructed from a wooden frame covered in cloth with springs in the middle.
If your warranty makes no mention of its need you can do what you wish.
They won t get the sturdy support they need to last long.
However box springs can also remove the need for a bed frame for support should that be your preference.