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NC-2009 WEp1:Water Use Reduction—20% Reduction

Vairable flow showers

We are considering using multi-flow shower heads on a commercial office project for the locker rooms. The shower heads can be adjusted by the user to flow between 0.5-1.5gpm depending on the nozzle selected for the desired task. What would we be able to claim as the flow rate if when installed we set them 0.5gpm? In order to achieve the additional point for this credit we need to have the shower have at least a 1.0gpm flow rate.

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Tue, 09/22/2015 - 18:18

Hi Nick, You'll have to use the worst case scenario for your water calcs (i.e. the highest water flow rate that can come out). You could, however, add a flow reducer in to the pipe to limit the water coming out of the pipe and going in to the showerhead to be 1.0 gpm. (I've come across them in various rental houses in California.) Since the showerhead is designed to work at a lower flow rate, hopefully the user experience won't be too negatively impacted by that. Or you could use a different showerhead. (I know Bricor makes some that are lower flow rates, incl. handheld options...)

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