We had an 11 year old waterbed mattress that was definitely past it's prime. We had already decided to replace it with a conventional bed. I put the Kill-a-Watt on it one morning for about 5 hours, the heater appeared to be almost always on! We just replaced it with a Select Comfort air bed. The Select Comfort is very comfy by the way, nice on the back.
Energy Use
| Waterbed | KWh | KWh/yr | $/yr | lbs CO2 | Price |
| Waterbed heater | .31 | 2628 | $236 | 5499 | $0 |
| Select Comfort Air Bed | 0 | 0 | 0 | 0 | $1000 |
Savings: 100% This is huge! If the numbers are correct I just killed 4 months of electric bills by getting a nicer bed. Time will tell. The price of the mattress above is for their lowest end model with a pillow top option.
The waterbed heater, an electricity leech?