Gravity toilets: This is the most familiar type of toilet. Here, water drops from the tank into the bowl and trap, moving waste down the drain. Gravity does all the work, which makes them a good choice for homes that don’t get great water pressure (as low as 10 pounds per square inch should be fine). Gravity toilets have a proven design and appeal to those who want a quiet flush. Since there’s not much fancy technology inside the tank, repairs are easier. However, lower-priced models don’t typically fare as well in testing. The best gravity toilets can cost as much as pressure-assist toilets. Prices range from about $150 to $500.












