Draining a Waterbed With a Shop-Vac®
So is it possible to drain a waterbed using a Shop-Vac®
Sure it is. The average wood framed Hardside waterbed in queen or king size holds approximately 200 gallons of water and a softside waterbed holds 115 gallons. You might first want to consider the fact that a Shop-Vac® is available in many different sizes.

1-4 Gallons
5-8 Gallons
10-14 Gallons
16-25 Gallons
55 Gallons
Could you imagine the number of trips it would take and the work involved to drain a 200-gallon waterbed? For instance picture a 5 gallon Shop-Vac® at 8 pounds per gallon which is going to weigh around 40 pounds per trip. It will only take 40 trips.
So should we use a Shop-Vac® to drain a waterbed?
Probably not, however it is fantastic for removing excess water, or the remaining water you were unable to get out while draining using
There are several popular waterbed draining methods that will make your waterbed mattress easier to move icluding the use of a Drain & Fill Kit, Electric Pump, or the good old gravity siphoning method.
What ever method you used if you still have a water bed mattress that is going to weigh in excess of 100 to 200 pounds. A Wet/Dry Shop-Vac® or similar brand can purchased most anywhere including home improvement stores like Lowe’s®. Home Depot®, or even Sears® will extract the remaining 10-20 gallons quickly and effectively. Be sure to quickly replace the plug and screw cap in order to keep mattress in a vacuum sealed state. Achieving such a vacuum will lighten mattress and make it easier to move and handle.
Here is link to an item you may want to consider picking up a Craftsman Tool Adapter for Wet-Dry Vacs





