• 2.3 HP Power Head • 15 Gallon Tank • Built-in Check Valve • No Oil! Maintenance Free No Oil System • No Water! Save On Water and Sewer Costs • Very Quiet (62DB) Operation • Easily Expand with Just a Simple Adjustment to up to 7 Users • Automatically Senses Flow and Increases Power when you need it! DISCLAIMER: This item does not include installation or service. 

• 4.6 HP Power Head • 15 Gallon Tank • Built-in Check Valve • No Oil! Maintenance Free No Oil System • No Water! Save On Water and Sewer Costs • Very Quiet (62DB) Operation • 7 Users Full Time with up to 12 Users with Both Units at Full Power • Automatically Senses Flow and Increases Power when you need it! DISCLAIMER: This item does not include installation or service.