Airthereal AGH550 HEPA Air Purifier Glory Days featured

Airthereal AGH550 HEPA Air Purifier Glory Days User Manual


Airthereal AGH550 HEPA Air Purifier Glory Days User Manual

Airthereal AGH550 HEPA Air Purifier Glory Days






This product complies with the maximum allowable concentration of ozone of 0.050 parts per million by volume (ppmv) in a 24-hour period. The Health Canada Guideline 2010 recommends that the maximum exposure limit, based on an averaging time of 8 hours, is 0.020 ppmv or less when tested in a sealed, controlled room approximately 30 m³.



Please read and comply with all of the instructions and warnings in the manual before using. Failure to comply with the instructions and warnings provided herein may result in inaccurate results and/or damage to the product itself.

General Safety Only use this air purifier as described in this manual.

  • Ensure the plug fits properly into an AC power outlet.
  • When not being used, turn the air purifier off and disconnect it from its power source by unplugging from the electrical outlet.
  • DO NOT operate the unit if its cord or plug is damaged. It may result in damage to the unit or injury. It must be replaced by the manufacturer or a technician to avoid risks.
  • NOT recommended to use an extension cord. If necessary, the extension cord should be the same size as the original one.
  • Thoroughly dry your hands before operation.
  • DO NOT immerse the air purifier in water or liquids. It may result in damage to the appliance, electric shock, or fire.
  • DO NOT use the air purifier outdoors. This appliance is designed for indoor use only.
  • DO NOT use the air purifier in an enclosed space where flammable, combustible, or explosive gases are present.
  • DO NOT use in an area where toxic vapors, flammable dust or oxygen tanks are present.
  • DO NOT insert fingers or objects into the air outlet.
  • Child supervision is required while the air purifier is on. Do not allow children to play on or near the air purifier.

Use & Care

  • Always make sure to place the air purifier on a flat, level surface before operation.
  • Always allow 15 inches (38 cm) of clearance on all sides of the purifier.
  • DO NOT ROUTE CORD UNDER FURNITURE OR APPLIANCES. Do not run the power cord under carpeting. Do not cover cord with throw rugs, runners or similar coverings. Place the power cord away from high traffic areas.
  • DO NOT sit on or place anything on top of the purifier.
  • DO NOT place the air purifier near sources of heat, such as stoves, ovens, radiators or computers.
  • DO NOT use this appliance with indoor smoke-type insect repellents or in places with oily residues, burning incense or chemical fumes.
  • DO NOT open the back shell while the air purifier is on. It will automatically turn off the unit.
  • Always unplug the appliance from the power supply before servicing.
  • DO NOT clean the appliance with water or any other liquid to avoid electric shock or injury.
  • DO NOT attempt to repair this device in any way or use any replacement components or parts to modify the air purifier. Contact Customer Support immediately if your appliance is no longer working.
  • Only use Airthereal Glory Days AGH550 replacement filters for this unit.
  • If you experience any problems while operating the air purifier, refer to the Troubleshooting section in the manual. If the problem is NOT solved, contact Customer Support.
  • If the unit is damaged or NOT functioning properly, discontinue use and contact Customer Support.


  • Rotate the bottom cover of the air purifier and unwrap the plastic package of the HEPA filter.
  • Reinstall the HEPA filter. Make sure the pull-tab is facing outward. Close the bottom cover by rotating it clockwise.


  • Place the air purifier on the floor horizontally.


Tip-Over Shut-Off

AGH550 is fitted with a safety cut-out switch to switch the unit off if it is knocked over If the purifier is knocked over, it will instantly shut off. To reset, simply place the purifier in an upright position and turn ON it again.

  • Place at least 15 inches away from TVs, radios, and other electronic products. Electromagnetic interference from certain electronics may cause product malfunction.
  • Only use the unit on the firm and flat surfaces. Flimsy or slanted surfaces may result in abnormal noise and vibrations.





Getting started

Insert the power cord into an electrical outlet.



Follow these instructions to reduce the risk of serious injury or death and to reduce the risk of damaging the unit.

Please make sure the operating voltage is the same as the parametric label. For American and Canadian users, our product will be equipped with a POLARIZED AC PLUG that will fit into the power outlet only one way. If the plug does not fit fully into the outlet, reverse the plug. If it still does not fit, contact qualified personnel to install the proper outlet. After inserting the plug into the outlet, the LED air quality indicator will light up and change colors (cycle through Blue-Green-Orange-Red). Once air quality has been detected, all the lights will turn off. The unit will enter standby mode. The power button keeps twinkling.

Power On

  • Press the button to process power.
  • The blue breath light of the air quality indicator will twinkle for 15 seconds. Meanwhile, it starts to detect the PM2.5 value and display on the LED display.
  • It goes into Auto Mode when power on.

Auto Mode

  • It goes into Auto Mode when power on or when you press the Mode button and choose the Auto Mode.
  • In Auto Mode, the Auto Mode will glow and the unit will automatically operate depending on the current air quality index. The LED display shows between A1, A2, A3, A4 or A5.
  • It will increase the fan speed automatically to improve air quality in the room until it returns to healthy levels.

Manual Mode

  • Press the fan speed button to turn the unit into manual mode. Press to start air circulation. 5 fan speeds are available. Each press will cycle between 1→2→3→4→5→1…
  • When Manual Mode is selected, Auto Mode is automatically disabled.

NOTE: The air quality indicator changes according to the corresponding PM2.5 value.

Sleep Mode

  • Press the Mode button to select Sleep Mode.
  • In Sleep Mode, the fan speed will automatically be reduced to the lowest speed.

Child-proof Lock

  • Press and hold the child lock button for three seconds, and then the child lock will glow. At this time, other buttons are invalid.
  • Press and hold the child lock button for 3 seconds again to unlock it.

0-24 Hour Timer

  • Press the Timer button to select the right time length.
  • When the power is on, pressing the timer button will cycle through 1 hr → 2 hrs → 3 hrs → . … →24 hrs → 0 hr etc. If the timer is set at 0 hr or restart the unit, the timer setting will be reset.
  • There will be 3 seconds’delay after setting.

Air Quality Indicator

PM2.5 Indicator

PM2.5 indicator shows real-time PM2.5 value. After power on, it takes about 15 seconds to activate the PM 2.5 Indicator. Then the air quality indicator will be illuminated the corresponding color and the real-time PM2.5 value will be displayed.


Instant PM2.5 value is one of the core references for indoor air quality index (AQI). Regarding the AQI, working modes, and lights indicators, Airthereal AGH550 Air Purifiers comply with EPA regulations. For additional information, please reference the United States Environmental Protection Agency (EPA):


Know the 7-in-1 HEPA Filter

When the replacement icon lights up (Filter icon keeps glowing), it is a reminder to check and change the air filter. It is recommended to replace the air filter every 6-8 months for optimal use. Or according to your air filter status. Time to replace the air filter when below signals appear:

  • Increased noise
  • Decreased airflow
  • Clogged filters
  • Presence of odors from the unit

Purchase a new Airthereal Air Filter Replacement: Search on Amazon: AGH550 filter Only use Airthereal Glory Days AGH550 replacement filters for this unit.

Replace the Air Filter

Power off and unplug before operating. Remove the bottom cover. Take out the old filter by pulling the tab.


Unwrap a new one.


Install a new filter in the unit. Make sure the pull-tab on the filter is facing outward and put the front shell on.


Process power. Press and hold the timer button & the fan button simultaneously for 3 seconds to reset the replacement reminder.

Unplug the power cord before cleaning.

Plastic housing should be cleaned with a soft cloth moistened with mild soap. Thoroughly remove soap film with a dry cloth. Open the front panel and clean the interior and air outlet with a vacuum cleaner. For better maintenance, clean the unit every 2 months.







Quality has always been Airthereal’s top priority. For your 100% hassle-free shopping experience, Airthereal provides a 2-year manufacturer’s limited warranty for AGH550 Air Purifiers. Online information:



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