3 New Ways Multifamily Properties Save Water & Energy and Qualify for Green Loans

August 23, 2019 5 min read

Watch the Webinar : How to Reduce Your Multifamily Property's Water & Energy Use and Qualify for Green Loans

Are you a multifamily property owner looking for new ways to lower your water and energy use and delight your residents?

Say Hello to a Better Shower!

This webinar, hosted by the American Apartment Association with Evolve Technologies, demonstrates the challenges associated with saving water and energy in multifamily residences while presenting solutions using ShowerStart TSV Technology that:
For the Property Owner:
  • Increases Net Operating Income by saving 7% or more on your property water bill $$$ – in addition to your existing water savings devices
  • Reduces water consumption by 5,000 gallons per unit, per year on average
  • Helps qualify for Green Loans (Fannie Mae & Freddy Mac)
  • Easily get a return on investment in just 10 months
  • Delights residents with a better shower experience
For the Resident:
      • Provides more hot water for every shower
      • Speeds hot water delivery
      • Adds convenience to their bathing routine
      • Saves water & energy without asking for change of habits or behavior

            Presentation Overview

            The Challenges

            1. The Wait Waste : Purging Cold Water From Your Pipes Before Every Shower Begins

            Referred to as Structural Waste, every building has its unique architecture behind the walls which dictates the amount of cold water that must be purged through its pipes before the hot water makes its way to the shower head or tub spout.

            2. Behavioral Waste : Hot Water Running Down the Drain with an Empty Shower

            The research shows that bathers will continue to be away from their shower 1 minute on average after the hot water has arrived, due to multi tasking. This equates to 2–6 gallons of hot water wasted every shower (depending on flow rate). One can imagine with distracted teens how this could be much much more...


            Research shows 75% of users walk away after turning on their shower to do something else; most often not returning until that task(s) is complete, wasting up to 25% of the hot water uses for entire bathing process. read the report

            Tub/Shower Combination Bathrooms

            Did you know that the speed at which the cold water purges during warm up affects the total gallons lost? For example, a low flow showerhead increases the structural waste (water & energy) by as much as 50%.

            As the hot water is summoned from the water heater and begins its journey to to the bathroom, it must of course first push the cold water out. The slower it travels, the more time it has to overtake and mix with this cold water, producing additional gallons of luke warm water that is not yet acceptable to the bather and therefore wasted. Now, for stand alone showers (no tub), the benefits of low flow showerheads greatly outweigh this warm water mix loss but what if there was a way for tub/shower combo units to significantly reduce this plus save much, much more? And do it all automatically without asking the user to change their behavior?

            The Tub Spout Solution?: One therefore may conclude that the quicker the water can be purged, such as through the tub spout which flows at 5 gallons per minute, the less total gallons lost. Of course, the catch here is that the user must be accustomed to this behavior and, more importantly, be standing nearby ready to hop in as soon as the hot water arrives in order to not waste Hot Water(water & energy) at 5 gallons per minute! Since most bathers consistantly walk away while their shower/bath are warming up this method is a gamble at best.

            The Solution

            – What if the tub would pause at the precise time the hot water arrived?

            Evolve's Auto-Diverting Tub Spout System does just that. For tub/shower combinations, as soon as the water reaches 95°, the intelligent system stops the flow out the tub spout, preventing Hot Water (both water & energy) from being wasted while no one is present. What happens next is the shower head will begin to trickle, letting the user know its warm and waiting. That's it!

            With Showerstart Technology, the user decides when to return and begin bathing (typically when they finish their task at hand such as picking out clothes, using the toilet, shaving, etc). The water in the pipes remains warm (the trickle will allow for any additional cooled water to escape) and the user simply activates the shower head to begin normal flow at the rate the shower head is intended – no further flow restriction occurs. If a bath is preferred, simply activate the tub spout instead. The system will automatically reset itself for the next user. how it works graphic

            Stand-Alone Showers (no tub)
            Utilizing Evolve's Showerstart Technology, either in our specialized showerhead (avaiable in multiple flow rates and features) or our TSV adapter placed between your exisiting showerhead and pipe, eliminates the additional waste created once the hot water arrives. As the hot water reaches the shower head at precisely 95°, the flow will pause to a trickle. This trickle is just enough to let the user know the shower is ready and waiting as well to allow for any cooling water to escape if the user is distracted for an extended period of time. The shower head will continue to trickle until the user completes their task(s) and activates the shower head.


            Elimination of Behavioral Waste for stand alone showers, as well as reduction in Structural Waste for bathers with Tub/Shower combinations can be achieved with Evolve's ShowerStart Technology.

            Real ADTS Results
            – Learn how a 156-unit multifamily property in Maryland saved 785,000 gallons and more than $10,000 in water and sewer charges in the first year of use. That’s a first-year return on investment (ROI) of 109% - without even considering the additional $4,000 - $11,000 in yearly energy savings realized through a more efficient use of hot water. Read the Study
            Save 7% or more on your entire property's water bill with our Auto Diverting Tub Spout System. This is in addition to the water savings from other plumbing devices such as low flow shower heads, sink flow restrictors and efficient toilets.
            Want More Detailed Info?
            To look further at our research on bather habits and gallons lost to structural and behavioral lost, we invite you to the following link:

            Gary Klein : Getting into Hot Water: The New Energy Efficiency Frontier