EcoVac Toilet
The EcoVac toilet is in its third generation of parts. I know because I have had all three over the past two years. SeaLand makes the EcoVac and it works very good. The problems we have had have been related to using a plastic shaft at a major pressure point (the pedal flusher) which has since been replaced with a brass shaft. Also, the spring cartridge (also part of the pedal flusher) has been updated with a new one that is black rather than light green. Please make sure that yours has these or I can promise you problems at the worst possible time. SeaLand has been great to us in helping correct the problems.The pump does make noise. In the middle of the night that can be a bit disconcerting to another person who is still sleeping. However, I believe that this is a small price to pay for the benefits of not pumping it out yourself.The last problem we had was in the hose from the toilet to the pump. Hunter put in a hose that was not approved for a line under pressure. As a result, it developed a crack-- behind the wall, of course. You can imagine the rest. It cost me $550 to fix. I am not a happy camper about it. I would require SeaLand's no odor line be included as a part of any EcoVac installation.I hope all of this helps. Overall, we like the toilet and feel that the problems have been resolved.