Spray Valve and Aerator Savings Calculations

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Savings Chart: Spray Valves

Annual Water Consumption Old Valve New Valve Savings
Gallons 54,000 23,000 31,000
Water & Sewer Cost $470 $200 $270/yr
       
Annual Water Heating Old Valve New Valve Savings
Therms 325 140 185
Water Heating Cost $240 $100 $140/yr
       
Annual Water, Sewer & Heating Savings     $410/yr
  • Savings Chart Assumptions:
    • Base Flow: 3.0 gallons per minute (industry average)
    • High-Efficiency Upgrade: 1.28 gallons per minute
    • Days used per Year: 300 Days
    • Hours used per Day: 1 Hour
    • Energy Prices: City of Minneapolis, CenterPoint Energy
    • Note: If you use your spray valve more days, for longer hours, or your current spray valve has a higher flow rate than 3 gal/min, you are likely to experience greater savings.

 

Savings Chart: Faucet Aerators

Annual Water Consumption Old Aerator New Aerator Savings
Gallons 11,900 2,700 9,200
Water & Sewer Cost $100 $20 $80/yr
       
Annual Water Heating Old Aerator New Aerator Savings
Therms 60 15 45
Water Heating Cost $40 $10 $30/yr
       
Annual Water, Sewer & Heating Savings     $110/yr
  • Savings Chart Assumptions:
    • Base Flow: 2.2 gallons per minute (federal standard)
    • High-Efficiency Upgrade: 0.5 gallons per minute
    • Days used per Year: 300 Days
    • Hours used per Day: 0.5 Hour
    • Energy Prices: City of Minneapolis, CenterPoint Energy
    • Note: If you use your faucet more days, for longer hours, or your current faucet has a higher flow rate than 2.2 gal/min, you are likely to experience greater savings.

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    CERTs Partners:

Minnesota Department of Commerce University of Minnesota Regional Sustainable Development Partnerships and Extension Great Plains Institute Southwest Regional Development Commission