I bought a chilipad[1] awhile back after reading Sam Altman's post on productivity[2]. I leave it on 66 or 67 degrees, and fall asleep much faster than I did before. I snake the tube under the bathroom door to muffle the sound, but it's totally worth a little white noise to have a perpetual cool-side-of-the-pillow feeling the whole night. Since it's removing the heat from under you, I suspect it would work quite well in tandem with a weighted blanket.
I can confirm that the Chilipad and weighted blanket combination is great for making sure that you're not too warm at night. Combined with blackout curtains, it's great for getting a good night of sleep.
Do you know know the air temperature in your room?
I can't imagine sleeping on something so cold. Just tonight I had to put on T-shirt in the middle of the night because it felt a bit cold, even though the air temperature was around 26 degrees Celsius (I have a digital thermometer next to my bed). I don't use a blanket at these temperatures though, just a thin bed sheet.
Do you use chillpad to be able to use the heavy blanket even though it's not cold inside the room?
With a weighed blanket, the temperature in the bedroom is 19°C (66°F) and the Chillipad is set to 14°C (57°F). This is the same temperature I was using before getting a weighed blanket.
I believe that's a rather unusually cold sleeping temperature for California, however.
My sister is the same way. She can't sleep if the room is colder than 75F/23.8C. My brother and I can't sleep if the room is warmer than 60F/15.5C. My personal theory is that my brother and I have more brown fat due to being active outside in the winter, even when it's -40F/-40C.
I bought a weighted quilt inset and use a breathable quilt cover specifically for summer sleeping because they're much cooler than a regular doona and I like some weight on me. I got a 10kg version at the recommendation of the store but I'd probably go for a 5kg if I was buying one again.
