Commonly Asked Questions

Commonly Asked Questions

July 23, 2026

Customers ask a lot of smart, practical questions when setting up their PuroAir air purifiers and this guide tackles the ones we hear most often. From first‑time setup and Bluetooth connection issues to air quality sensor troubleshooting, we break down the everyday challenges users face and show exactly how to solve them. Whether you’re unboxing your purifier for the first time or fine‑tuning performance after months of use, this FAQ-style walkthrough helps you get cleaner air faster, with clear steps, quick fixes, and pro tips to keep your device running at peak efficiency.

Commonly Asked Customer Questions - Click to see each section:

First-Time Setup

Congratulations on your PuroAir purchase! Before enjoying the benefits of clean indoor air, please follow these steps. Make sure the PuroAir air purifier is turned off and unplugged for safety.

Installing the HEPA + CarbonTechTM Activated Carbon Filter:

  1. Remove the filter cover grille from the front of the PuroAir 100i or Lite, bottom of the PuroAir 130i or 240, or the back of the 400 air purifier, depending on the model.
  2. Note: Unpack the new HEPA filter and remove the protective plastic packaging completely.
  3. Insert the new filter inside your PuroAir air purifier.
  4. Put the filter cover grille back on your purifier. Please note: The 130i filter twists directly into your 130i air purifier.
  5. Plug the purifier back in and power it on.
  6. Reset the filter indicator on the purifier. Press and hold the replacement indicator button on the control panel for 10-15 seconds to reset.
  PuroAir 100i HEPA Air Purifier has a filter grille located on the front of the unit. The grille includes magnets, allowing it to easily and securely snap into place.
PuroAir Lite HEPA Air Purifier includes a filter grille on the front of the unit. The grille includes magnets, similar to the 100i, allowing it to easily and securely snap into place.
PuroAir 130i HEPA Air Purifier has a replacement filter that screws into the bottom of the unit.
PuroAir 240 Smart HEPA Air Purifier has a filter cover located on the front of the unit. The air intake grille is 360° around the bottom half of the unit.
PuroAir 400 Smart HEPA Air Purifier includes a filter grille on the back of the unit for easy replacement.

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Purifier Won't Turn On

Having trouble turning on your PuroAir purifier? No problem! We’re here to help!

  1. Check the power connection
    1. Verify the air purifier is plugged into a working electrical outlet.
    2. Note: Test the outlet with another device to confirm it's functioning. Inspect the power cord for any visible damage or disconnections.
    3. Note: Damaged cords can prevent the unit from receiving power. Reconnect the power cord both to the air purifier and the electrical outlet firmly.
  2. Examine the POWER button
    1. Locate the POWER button on your air purifier
    2. Note: Refer to the user manual for information on the exact location of the ON/OFF switch. Toggle the switch to ensure it's in the ON position.
    3. Check for any debris or obstruction that might prevent the switch from functioning properly.
  3. Check for automatic safety features
    1. Determine if your air purifier has automatic safety shut-off features.
    2. Restart the air purifier by turning it OFF and then ON.

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Button on PuroAir Won’t Work

Are you pushing the power button, but nothing happening on your purifier? Here is how to fix it.

  1. Clean the control panel buttons
    1. Turn off and unplug the air purifier.
    2. Gently wipe the button with a soft, dry cloth to remove any dust or debris.
    3. Note: Avoid using wet or abrasive cleaners as they might damage the button. Press the button a few times to dislodge any stuck particles.
    4. Plug in and turn ON the air purifier to test the button.
  2. Check the child lock feature
    1. Try using the button again after disabling the lock feature.
  3. Reset the air purifier
    1. Unplug the air purifier from the power source.
    2. Wait for about 1 minute.
    3. Plug the air purifier back in.
    4. Turn the air purifier ON and test the button.

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Won’t Connect to Bluetooth

My phone won’t pair with the purifier. What can I do?

  1. Restart the air purifier and device
    1. Turn OFF the air purifier.
    2. Turn OFF the Bluetooth on your smartphone or tablet.
    3. Wait for about 30 seconds.
    4. Turn ON the air purifier.
    5. Enable Bluetooth on your device.
    6. Try connecting to the air purifier again.
    7. Note: A restart can resolve temporary connectivity issues.
  2. Check the Bluetooth range
    1. Bring your device closer to the air purifier.
    2. Ensure there are no physical obstructions between them.
    3. Attempt to connect via Bluetooth again.
    4. Note: Bluetooth typically works best within a range of about 10 meters (33 feet).
  3. Forget and rediscover the Bluetooth connection
    1. Open the Bluetooth settings on your device.
    2. Locate the air purifier in the list of paired devices and select "Forget" or "Unpair".
    3. Search for available Bluetooth devices and select the air purifier to pair again.
    4. Note: This process refreshes the Bluetooth connection.
  4. Reset Bluetooth settings on the air purifier
    1. Turn OFF the air purifier.
    2. Locate the Bluetooth Reset button or option.
    3. Note: Refer to the user manual for the exact location and method to reset Bluetooth. Follow the manufacturer's instructions to reset the Bluetooth.
    4. Turn ON the air purifier and attempt to connect again.
  5. Update the air purifier's firmware
    1. Check if your air purifier has firmware that can be updated.
    2. Note: Refer to the user manual or manufacturer's website for firmware update information. Follow the instructions provided by the manufacturer to update the firmware.
    3. After updating, try connecting via Bluetooth again.
  6. Check for device compatibility
    1. Verify that your smartphone or tablet is compatible with the air purifier's Bluetooth version.
    2. Consult the user manual or manufacturer's website for compatibility information.
    3. If your device is not compatible, try connecting with a different device that is.

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Unusual Odor

There is a scent coming from my purifier other than fresh, clean air. Here's what to check.

  1. Check and replace the filter
    1. Turn OFF and unplug the air purifier.
    2. Open the filter compartment.
    3. Inspect the current filter for visible dirt, clogging, or damage.
    4. Replace the filter if it appears dirty or damaged.
    5. Note: Filters should be replaced regularly according to the manufacturer's guidelines.
  2. Clean the air purifier
    1. Clean the exterior and interior of the air purifier using a soft, dry cloth.
    2. For deeper cleaning, refer to the manufacturer's instructions on cleaning the interior.
    3. Note: Avoid using harsh chemicals or water that could damage the purifier.
  3. Check for blockages
    1. Check the air intake and exhaust areas for any obstructions.
    2. Remove any objects or debris that could be restricting airflow.
  4. Verify room conditions
    1. Ensure the air purifier is placed in an open area with adequate space around it.
    2. Avoid placing the purifier too close to walls or furniture, which can restrict airflow.
  5. Adjust the settings
    1. Check the air purifier's settings and adjust them to a higher fan speed or more powerful mode.
    2. Note: Some models may have specific settings for different air quality conditions.

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Reduced Airflow / Air Quality

If you are experiencing reduced airflow or lower air quality, here are a few steps you can take.

  1. Check and replace the filter
    1. Turn OFF and unplug the air purifier.
    2. Open the filter compartment.
    3. Inspect the current filter for visible dirt, clogging, or damage.
    4. Replace the filter if it appears dirty or damaged.
    5. Note: Filters should be replaced regularly according to the manufacturer's guidelines.
  2. Clean the air purifier
    1. Clean the exterior and interior of the air purifier using a soft, dry cloth.
    2. For deeper cleaning, refer to the manufacturer's instructions on cleaning the interior.
    3. Note: Avoid using harsh chemicals or water that could damage the purifier.
  3. Check for foreign objects
    1. Inspect the air intake and exhaust areas for any foreign objects or debris.
    2. Remove any objects or blockages found in these areas.
  4. Air out the purifier
    1. Place the air purifier in a well-ventilated area.
    2. Let it run without a filter for a few minutes to air out any residual odors.
  5. Verify room conditions
    1. Check the room for sources of the unusual odor, such as trash bins, damp areas, or hidden mold.
    2. Eliminate these sources to prevent the odor from being circulated by the air purifier.

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Sensor Malfunctions

Is the purifier not automatically adjusting fan speed, even with smoke or other high indoor pollution? Let’s walk through a few ways to ensure that your purifier's sensor is sensitive to everything floating in the air.

  1. Clean the sensor
    1. Turn OFF and unplug the air purifier.
    2. Locate the sensor, typically found near the air intake or control panel.
    3. Note: Refer to the user manual for information on the exact location of the sensor.
    4. Gently wipe the sensor with a soft, dry cloth to remove dust or debris.
    5. Then, blow air directly into the sensor with a compressed air can, hair dryer on the cool setting.
    6. Reconnect the power and turn ON the air purifier.
  2. Check for obstructions near the sensor
    1. Inspect the area around the sensor for any obstructions or blockages.
    2. Remove any objects that might interfere with the sensor's operation.
  3. Test in a different environment
    1. Move the air purifier to a different room or location.
    2. Turn it ON and observe if the sensor functions differently.
    3. Note: Environmental factors can sometimes affect sensor performance.

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Noise Issues

PuroAir 240

  • Unplug the unit and move it to a location where it can be cleaned, preferably outdoors.
  • Remove the bottom cover and filter.
  • Using a device that blows strong air (air compressor, hair blow dryer on a cold setting).
  • Blow directly into the wind turbine, alternating clockwise and counterclockwise.
  • Circle slowly in each direction at least 10 times.
  • Keeping the unit outside, replace only the bottom cover (not the filter) and plug the unit in.
  • Turn the unit on and set to high for 30 seconds. keep a distance as there may be particulates released into the air.

PuroAir 400

  • Unplug the unit and move it to a location where it can be cleaned, preferably outdoors.
  • Remove the filter cover and filter.
  • Using a device that blows strong air (air compressor, hair blow dryer on a cold setting).
  • Blow directly into the wind turbine alternating clockwise and counterclockwise.
  • Circle slowly in each direction at least 10 times.
  • Keeping the unit outside, replace only the filter cover (not the filter) and plug the unit in.
  • Turn the unit on and set to high for 30 seconds. keep a distance as there may be particulates released into the air.

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