Mattress Ratings >> Memory Foam Mattress Ratings
Memory Foam Mattresses and Heat → Based on Data From Over 4,300 Actual Owners
Page last updated April 20, 2010.
Memory foam mattress owners sometimes mention that their beds "sleep hot" and are a heat trap.
This means that the mattress absorbs and then fails to disperse a person's body heat, resulting in a sleeping surface that is unnaturally warm.
Sleeping hot is caused by the unique structure of the foam, and, as a result, sleeping hot is usually not an issue with other types of beds, at least not to the extent it is with memory foam.
According to our collected data, overall, about 7% of memory foam mattress owners say that their mattress is, at least some of the time, too warm.
Mattresses with higher density foam tend to have about twice the number of heat problem reports than lower density foam mattresses.
Below are how some brands perform on this issue. (Higher density beds are in blue and lower density beds are in green.)
| Brand | Percentage
of owners who said their memory foam bed sleeps hot |
| Isoform | 8% |
| Bodipedic | 5% |
| Bragada | 8% |
| Night Therapy | 4% |
| Sleep Innov/Novaform | 9% |
| Spa Sensations | 4% |
| Tempur-pedic | 7% |
Some owners say that using a thick cotton pad will help to keep the bed cool. Others say this makes no difference.
Bottom line: If you are a naturally hot person, sleep in a warm environment, or like to have lots of heavy covers on when you sleep -- memory foam may possibly be too warm for you.