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Several innovations in shower fixtures provide water, energy and money savings without changing your shower habits. The two primary innovations are integrated thermostatic shut-off valves and low-flow showerheads.
Thermostatic Shut-Off Valves
Thermostatic shut-off valves (TSV) are either integrated in new showerheads, or are showerhead adapters that you can use with your existing showerhead. The valve is triggered by water temperature. If you are in the habit of turning the water on to warm up before you get in the shower, that’s water down the drain. The TSV senses when the water is up to temperature and then slows the water flow to a trickle. This prevents a lot of hot water from flowing straight down the drain if the shower is ready before you are. When you are ready to get in the shower, you pull a cord attached to the valve and full water flow resumes.
A standard showerhead has a flow rate of 2.5 gallons per minute. Low-flow showerheads have a flow rate of two gallons per minute or less, saving you a half gallon or more of hot water for every minute you’re in the shower while still providing a great-feeling shower. Pressure compensating technology allows the showerhead to deliver a comfortable water stream in homes with both high-and low-water pressure, and the reduced showerhead size provides comfortable spray force and coverage while using less water.