How to Use Ozone Generator with AC System

A7K Air Applications Air-3500 Air-7000 Apartment Odor Home Odor

If your AC system has a fan…

  • First, treat the individual room that has the worst odor or smoke damage

    • Before turning on your unit, remove all valuables, plants, and/or pets from the room so they do not come into direct contact with ozone

  • Second, you will need to determine the severity of the smell, which will dictate the amount of time needed for cleaning

    • For example, heavy smoke smells will require longer treatment times (4 hours or more), while pet smells could be solved in a shorter amount of time (4 hours or less)

  • Next, place the unit into the severely impacted room and turn the unit on full power while selecting the appropriate time setting on your unit

    • Be sure to leave the room immediately after your unit begins producing ozone

  • Once you have treated each room individually, you can treat the whole house using the AC method

  • To begin this method, determine where the air return vent is on your heating and cooling system

  • Remove the filter and turn the AC fan ON

  • Place your unit in front of or near the return vent and be sure the heating and cooling system’s fan is to the always on position

  • You will then need to turn on your unit for the 4-hour cycle and immediately exit the building

  • It will be safe to return to the building at a minimum of 4.5 hours later, but we recommend returning 5 hours later or longer

    • Keep in mind, the half-life of ozone is 30 minutes

  • If the smell of ozone is still strong after this amount of time has passed, open windows to air out the building

If your AC system does NOT have a fan…

  • If there is no AC fan in the building you wish to treat, we recommend using a large fan to circulate ozone throughout the area

    • You will need a fan with oscillating capabilities to be the most effective

  • First, place the ozone generator in front of the fan in the room that needs to be treated the most

  • Next, turn the oscillating fan on at full speed

  • Then, turn the ozone unit on full power while selecting the appropriate time setting on your unit for the severity of the smell

    • For example, heavy smoke smells will require longer treatment times (4 hours or more), while pet smells could be solved in a shorter amount of time (4 hours or less)

    • Before turning on your unit, remove all valuables, plants, and/or pets from the room so they do not come into direct contact with ozone

  • Exit the building for the next 4.5 hours at a minimum, but we recommend that you wait 5 hours before returning

    • Keep in mind, the half-life of ozone is 30 minutes

  • If the smell of ozone is too strong when you return, be sure to open windows to air out the building

Please Note: Be sure to only use your ozone generator in an unoccupied area. Our units produce high amounts of ozone. It is not safe to run the unit in an occupied area for more than 1 minutes. Be sure to remove any valuable items, pets and/or plants before you use the ozone generator. Do not breathe in ozone directly.

To learn more about ozone generator applications, visit our forum.

The A7K, Air-7000, and Air-3500 are our most effective units for air treatment applications. To learn more about these units, click here


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  • Incorrect on

    This information is incorrect. The half life of ozone in air is not 30 minutes.

    The half life of ozone in air depends on humidity, temperature, and agitation.

    https://www.researchgate.net/publication/259092141_Half-life_time_of_ozone_as_a_function_of_air_movement_and_conditions_in_a_sealed_container


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