chiliPAD Sleep System
The chiliPAD system uses circulating water to maintain a constant bed temperature of your choice. It is comprised of two parts, the pad that lays between you and the top of the mattress, and the cooling/heating pump. The pump cools or heats the water that is then pushed through the pad as you sleep.
The setup is very simple, but does require you to crawl under your bed. The cube shaped pump is a bit heavy and it wasn't the easiest crawling under the bed to plug it into the wall. Once the pump was setup, it was very easy to then attach the water tubes from the pad itself. I found that the whole process took about 15 minutes (that was setting up 2 pumps for each side of the bed). I did have to make a separate run to the grocery store as the pumps require distilled water.
The chiliPAD really does work, and it works quickly. I am a pretty hot sleeper so I didn't have all that much faith that it would be able to keep me cool. I very quickly found that the chiliPAD was more than up to the task. I actually had to keep raising the temperature from their recommended 65 degrees.
The first night I found myself waking up every few hours to adjust the temperature, but it was worth it for the second night. Once I had dialed in the perfect temperature, it felt great and really helped me stay cool. Its been two weeks since I started and each night the temperature stays at a balmy 75 degrees on my side of the bed. My partner likes it a bit warmer, so she has her side set to 79.
While the chiliPAD does a great job of maintaining the perfect temperature, it does have a two problems. The biggest issue for me was the noise. The pump isn't exactly loud, but its still a good amount of white noise (disclaimer: I sleep in complete silence). I was particuarlly annoyed that it made a noise even when it wasn't cooling or heating the water. This means you have a constant low whirl sometimes with a louder fan as it cools or warms the water. The pad itself is the second issue. There are thin tubes of water running lengthwise in the pad. I wasn't particually bothered by them, but my partner found they forced her to sleep in unnatural positions (disclaimer: I believe the princess and the pea might have been written about her).