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Installing Dual Flush Toilets: The Basics

By Karin Mangan

When you use dual flush toilets, you can determine the amount of water your toilet will use each time it flushes by selecting one of the two flushing options. In general, dual flush toilets use either 1.6 gallons (6 liters) or 0.8 gallons (3 liters) for every flush. It's easy to see how much water a dual flush toilet can save over the time of a year, because it cuts the amount of water you use literally in half. Besides lowering your water bills, dual flush toilets are good for conserving water and helping the environment.

These tips will help when installing a dual flush toilet:

  1. Dual flush toilets require are comprised of a toilet bowl and tank. New bowls that are designed specifically to work with lower volumes of water are required for the toilet to function properly.
  2. Understand that low flush and dual flush toilets are slightly different in overall size when compared to regular toilets. Keep this in mind if the wall behind your existing toilet is not yet finished.
  3. You can usually use the existing plumbing for the dual flush toilet. Dual flush toilets are generally designed to work with a 12 inch rough in, but can be purchased to work with 10 inch and 14 inch rough ins as well.
  4. Installing a dual flush toilet is very much like installing a normal toilet. Simply shut off the water supply to your existing toilet, undo the plumbing and bolts holding it to the floor, and reinstall the new dual flush toilet according to manufacturer directions.

The entire job can take less than half a day. The long-term savings are worth the time!

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