How to choose

This article is the archived version of a report that appeared in August 2009 Consumer Reports magazine.

Even 1.6-gallon toilets use as little as 20 percent of the water used by older ones. Check our Ratings (available to subscribers) for a quieter model if it's going near a sleeping area. Here's what else to consider:

Choose a height

Toilets with seats 17 to 19 inches off the floor meet standards set by the Americans With Disabilities Act. They're also easier to use for most adults. Most we tested are ADA-compliant. Shorter models are footnoted in the Ratings and may be a better option for homes with small children.

Consider the shape

Most we tested have elongated bowls, which are more comfortable for many body types and offer a sleek, updated profile. Models with round bowls (footnoted) save some space.

Check your water pressure

Ideally, homes should have between 50 and 75 pounds per square inch. A $10 gauge that connects to a hose spigot will tell you your home's pressure; you'll need at least 25 psi for pressure-assisted toilets.