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# 5 Easy Steps to Calculate Cost Savings

## Estimated Cost Savings Using Rain Bird 1800-PRS Spray Heads

EXAMPLE

 Calculate your estimated cost savings: Step 1: Enter the pressure (bar) at the nozzle: (Either enter the average dynamic pressure for the spray heads on one zone or enter the average dynamic pressure for all the spray heads on the entire system. If the dynamic pressure is not available, enter the system's static pressure. The static pressure will overstate the water savings, but it will still provide an estimate of the potential cost savings.) Step 2: Enter the flow (m3/h) at 2,1 bar: (If you entered the pressure for one zone above, enter the flow (m3/h) for that zone. If you entered the pressure for the entire system above, enter the flow (m3/h) for the entire system.) Step 3: Enter the Watering Schedule (All three required): Average Watering Time Per Day (min): Average Number of Watering Days per Week: Average Watering Weeks per Year: Step 4: Enter the Unit Water Cost: Unit Water Cost per cubic meter (m3): \$ or other Step 5: Enter Number of Sprinklers in the zone or System: Enter Difference in Price Between Standard spray head and 1800-PRS: \$ or other per unit

 The estimated water savings is: m3/h The estimated yearly water savings is: m3 The estimated yearly cost savings is*: \$ or other The estimated cost of upgrading to 1800 PRS is: \$ or other Estimated Payback Time: years months

* (Due to varying conditions, your actual cost savings may be different. This formula is designed solely as a basis for estimating potential savings.)