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Most ordinary toilets use gravity to flush their contents. When a flush is triggered, the water in the tank essentially just falls into the bowl, with the force of the falling water creating a siphon ...
Pros: Pressure-assisted toilets dispatch the simulated solid waste in our tests with few clogs. If you have little kids who like to stuff the toilet with toilet paper , these can be a lifesaver.
Two plumbers explain why flushing the toilet while someone is showering can change the water temperature in homes with older plumbing systems, and what homeowners can do to stop it.