A diagnostic guide to night sweats and hot sleep, with practical fixes that do not require replacing your mattress.
Not all night sweats are mattress-related, but a heat-trapping bed can make them worse. The goal is to isolate what is causing the heat: the mattress, the bedding, or the room.
If you want a fast solution, start with best cooling pads and the buying guide.
Memory foam is the most common offender. If that sounds like you, read memory foam heat fixes and best for memory foam.
You do not need to replace your mattress to fix night heat. Use the tests above, then choose the right layer with the buying guide.