Gravity-flush toilet

Gravity-flush toilet

A toilet whose flush is powered solely by the force of falling water.
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Some consider pressure-assisted toilets noisy, although Love says the whoosh of a pressure-assist is just unfamiliar compared to the gurgle of a gravity-flush toilet. Pressure-assisted toilets are more effective in removing solid waste and limiting odor and soil problems, but are also a bit more expensive than gravity-tank toilets; prices usually start around $230.
Both David Del Porto and Terry Love recommend the Toto gravity-flush toilet, pictured at left.
Gravity-flush toilets are the most common, have the simplest design and are usually the least expensive, ranging in price from $50 to $420.
Some new water-saving toilets are equipped with a pressure-producing device that improves flushing (it is called the Sloan Flushmate), but this device can't be retrofitted on existing gravity-flush toilets. If frequent plunging becomes too annoying, I suggest having your most-troublesome toilets removed and replaced either with high-performance models or pressure-assisted flush models.
Gravity-flush toilets. These are conventional toilets for residential use that have been engineered to use less water.
Pressure-assist toilets have a distinctive whoosh sound that's much louder than gravity-flush toilets, but they are more effective in removing solid waste.