Water leaking When I fill the canister portion with hot water and put it in my machine it immediately begins to leak out the bottom. It has just started doing this. Do I need to take it in for repair?

The water tanks on this unit have had a very bad history of leaks. Most of the repair people had never heard of this unit, but one did, and had a spare set of tanks. If the unit is still under warranty, it is worth your while to get a replacement unit. Call Eureka, and ask them how to get a replacement unit, especially if you are having more than one issue with the unit (such as leaking, no heat, broken upholstery nozzle, etc.). I had success in sending back the serial number plate and a detailed list of my problems. They sent me a new unit, and I was able to get at least one unit working properly. Some repair men may be able to fix leaks in the seals on the tank. Hold the tank up and if it leaks, well you got your problem! Eureka will not solve your problem, I've discovered they like to let their service depots handle their junk. Most service depots can give you a solution if they are worth their salt. If the service depot can still get tanks, go that direction. If no replacement tanks are available, call Eureka for a whole unit.