Reverse Osmosis - Noises

A Reverse Osmosis system will create some sound or noise when it is operating. While there are normal sounds that occur, there can also be sounds that may not be a normal sound. We are providing information regarding the expected operating sounds as well as sounds that may indicate attention is needed.

 

Understanding Sounds or Noises Created by a Reverse Osmosis System

Normal Noises Produced by Reverse Osmosis

  • The system will make some slight noises as it processes water, even though the faucet is off. A slight humming noise from the Reverse Osmosis system as water is dispensed is normal. This is due to the pressure change inside the system as it begins processing more water.
  • A slight dripping/gurgle noise from the sink drain is normal. This is reject process water flowing down the sink drain.
  • If just installed, a whining sound can be heard when the tank is pressurizing for the first time. This noise should stop within a few minutes.

Abnormal Noises Produced by Reverse Osmosis

  • On new installations, a loud noise means it was probably installed wrong. A slight adjustment can be made to the drain line adapter to minimize noise. This may be too difficult for some people to do. Directions for doing this are as follows:
    • Locate the drain line adapter, it is a white plastic piece with an outlet on the side. It has a bulb where the tube to the faucet is connected. It is most likely mounted directly below the sink in the drain line between the sink drain and "P" trap.
    • Turn on the R/O faucet so the system is processing water and noise is occurring.
    • Rotate/turn the drain adapter in the vertical axis. You may need to loosen the nuts at the top and bottom of the drain line adapter.
    • Continue to rotate the adapter to a position that minimizes the noise.
    • Retighten the nuts.
  • A loud whining noise can be caused by missing filters and/or membrane. There are no extra filters that come with the system. Make sure all filters and the membrane are installed properly at the time of installation or after sanitizing.

Additional Support

For additional support with a Reverse Osmosis system, you may contact the Innovations Team directly at 1-800-952-5039 (option 1) from 8:00 AM to 6:00 PM, EST, Monday through Friday.