Get a small table fan. Aim it at his upper body. That should keep him cool.

Does he wear light items or nada when he sleeps? If he's warm, a sheet should be enough.

Also, are his sheets 100% cotton? Synthetic fibers or blends don't breathe as well.

There are several cooling mattress pads on the market running the gamut of price ranges.

I don't know your climate. We are coastal, on the cool rarely HOT spectrum I feel... yet find as we gotten older we almost cannot sleep in a room without operational windows. Our bedroom window is partially opened year around, even those night when temps do dip well below freezing.

We run a silent fan in our bedroom every night too.

My mothers little house south of here could become warm to the point of unhealthy in a hot weather period. She was not one to leave any sliding doors or windows unlocked overnight. I would ask her to put an ice pack wrapped in a face towel inside her pillow case at night and that helped a little - but certainly a temporary fix.

I use nothing but pure cotton bedding on our bed the last many years. I feel badly for your son, good sleep is so important. I hope you find a good solution for a cooler dryer night for him.

I have one word: BedJet

It’s a game changer for my husband, who sleeps like a furnace. It can be used for cooling or warming air under the sheets.

You’re welcome.

^^^Ha I remember seeing that on Shark Tank! Long time ago as I recall.

I sometimes use a small ice pack on my neck or wrists at night to combat south GA heat.

Can we assume his mattress is not covered in plastic as many hypoallergenic ones are? DH said "have him sleep in a tent outside." I do wonder why a 23yr old's mom is asking this.......Lets hope it's about a birthday present to be mailed to him.

Make an Ice Pillow. Mix rubbing alcohol with water. I'm a little loose on the proportions; I think it's about 1/3 alcohol and 2/3 water. You can experiment to find the best mix for preferred slushiness, starting with more alcohol and diluting it. Pour it into a gallon size ziploc freezer bag. Seal that in a two more ziplocs in case of leaks. Freeze. You can use a T shirt as a pillowcase. These ice pillows are great for headaches and also for sleeping without air conditioning.

What's your problem HU-202?

Ditto what food said!

The best thing I ever did was buy a ceiling fan for the bedroom. On the lowest setting, it creates a gentle breeze and I can't hear it at all. I have awakened during the night and thought the breeze was coming in from the window. The middle setting is just a little more noticeable. I have the MinkaAire Concept fan, which is a flush mount.

My husband is a super hot sleeper and loves our ceiling fan. He also appreciates our Cozy Earth bamboo sheets. We can't use the sheets in the winter because they are too cool for me.

Cotton sheets, cotton mattress cover, and a ceiling, stand or table fan.

We have ceiling fans and other fans. Even now, when it's not even hot out, he wakes up sweaty.

I'm thinking all cotton or maybe those bamboo sheets might be the next to try. Thx.

yea, not sure what HU-202's problem is either.

For the record, many 20-somethings are unable to afford housing even with full-time employment. In any case, what does it matter the reason why?

What is the indoor temperature? We can have nice cool nights but our indoor temperature isn't all that cool or may be humid at night which feels hot and miserable. Maybe a window unit to make it colder in his room?

crazybrunette64...exactly!! I'm a full grown adult with a full time job and if I had to go out and buy a house or pay rent with todays prices...yikes!! the thought of the cost of a house or rent is truly sickening. We are in So Cal so that pretty much answers that, right? ;-)

udpate: picked up a cooling mattress pad and cooling pillows. Nothing expensive, easily found at TJ Maxx. Per son, it's making a difference. No sweaty nights so far.

I did double check and his sheets are 100%. What I found interesting was a lot of the sheets that stated they were cooling or moisture wicking, weren't cotton. So I opted to start with the "cooling" mattress pad and pillows.