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What maintenance is recommended for Blue Signature?

To keep your Blue Signature air purifier operating at peak performance, Blueair recommends a combination of routine cleaning, filter care, and safety checks. Below is a complete breakdown of the recommended maintenance tasks:

1. General Cleaning

Frequency: Monthly or as needed

What to Do:

  • Unplug the device before cleaning.
  • Use a soft, clean cloth to wipe down the top and exterior surfaces.
  • Avoid harsh chemicals, gasoline, or solvents, as these can damage the casing and electronics.

2. Pre-Filter Maintenance

Frequency: Every 2–4 weeks (more often if you have pets or high dust levels)

What to Do:

  • Vacuum using a soft brush attachment
  • Or wash it according to label instructions and air dry thoroughly before reattaching

3. Filter Replacement

Frequency: Every 9–12 months, or when the filter replacement indicator turns red

What to Do:

  • Follow the step-by-step replacement instructions in the manual.
  • After replacing, reset the filter indicator by:
  • Holding the Fan Speed button for 15 seconds, or
  • Using the Blueair app

5. Sensor Care (Air Quality Sensors)

Frequency: If air quality readings seem inaccurate

What to Do:

  • Power off the device
  • Clean around the sensor vents with a dry cloth or low-suction vacuum
  • Restart the unit

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