Knowledge Base

What is a high-efficiency toilet, or HET?

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Under federal law, no toilets may be sold that use more than 1.6 gallons of water per flush (gpf). These are called low-flow toilets. High-efficiency toilets are designed to use even less. Most use about 1.28 gallons per flush, but a few impressive models are as stingy as 1.1 or even 0.8 gallons.
Updated 5/15/2018 11:44 AM
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