- Charles Prior Hall created the first commercially successful water mattress in 1968, but both water mattresses and airbeds were originally created to for use in hospitals.
- Airbeds conform to standard twin, full, queen and king sizes. Water mattresses are available in a super single, queen and king size. Only the king size water mattress has the same length and width measurements as a standard size king bed.
- Both airbeds and water mattresses conform to the body's curves. Waterbeds are available with heating systems.
- Airbeds are easy to transport and are often used for camping. Water mattresses require a frame and plumbing system and are not easy to transport.
- Some rental agreements prohibit the use of water mattresses, or may require you to carry your own renter's insurance to cover any damage caused by a water mattress.
- When choosing a bed or mattress, always lay on it before making a purchase. It is impossible to judge how you will feel sleeping on it based on written descriptions or photos.