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High-Efficiency Toilet Program
$150 rebates on new HETs!
Rebates are available for the purchase of qualified high-efficiency toilets (HET). Get $150 for each HET installed. Click here to download program brochure with participation requirements and list of qualifying models or call the Water Conservation Program at (707) 778-4507. Rebates issued while funding lasts.
What is a High-Efficiency Toilet?
High-Efficiency Toilets (HET) are fixtures that use at least 20% less water than the standard 1.6 gallon per flush (gpf) toilet. On average HETs use 1.3gpf or less, depending on the model. The most common types of HETs are dual-flush and pressure-assist.
Dual-Flush
Dual-flush toilets save water by offering two different flush volumes; one for solids and one for liquids. By selecting which flush to use, you can reduce water usage by using only what you need. Most dual-flush toilets use 1.6gpf for a full flush and 0.8gpf for a reduced flush. Studies show that dual-flush toilets will average about 1.3gpf.
Pressure-Assist
Pressure-assist toilets have a sealed vessel inside the tank that compresses a pocket of air inside as the water fills. When the toilet is flushed, the pressurized air forces the water rapidly into the bowl, creating a fast, powerful flush that has a “woosh” sound. The flush can be slightly louder than standard toilets. Most pressure-assist toilets use about 1.0 to 1.2gpf. Some pressure-assist toilets also have the dual-flush feature.
How do I know which toilet works best?
Toilets are tested and ranked on performance by many organizations. For information on toilet testing and results, visit the California Urban Water Conservation Council.
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