Hot Tub Pressure Testing

Testing for Leaks

• The first and primary form of pressure testing occurs when you install your hot tub. You simply fill the hot tub with water and then run a quick operation of all systems. This allows you to look over the entire tub, make sure all connections and pipes are working correctly, and spot any cracks in the hot tub molding before they are hidden by the final placement. This is a quick and practical way to test the quality of the hot tub.

Advantages

• True pressure testing occurs at the factory where your hot tub was manufactured. The pressure test represents quality control: the process shows any leaks in the frame so that faulty tubs can be scrapped. But an on-site test can spot any cracks that may have formed during transportation and delivery. It is always a good idea to double-check the watertight capabilities of your system before fitting.

Pressure Switches

• Pressure switches are circuits in your hot tub that monitor water pressure and levels for emergency conditions. If they detect that the water level is too high or that the pump is running too quickly, they shut down power to the hot tub pump. If your hot tub overflows or refuses to work properly, the pressure switch may be faulty. You can test pressure switches by using an ohmmeter, or by examining the switch for cuts or other damage.

Pressure Testing

• If your hot tub is losing water instead of overflowing, a crack may have developed after installation that is interfering with proper pressure balances. You can conduct a pressure test to see if a leak has actually formed. Simply fill your hot tub and mark the water level, then run the spa for a full 24 hours. Note how much the water level has dropped, then redo the test without running the spa. If the water dropped more when the pump was running, this indicates a pressure leak that you will need to have serviced.