We are currently experiencing higher than normal call and email volumes, please visit our support page to find answers to common questions.

What is a micron and how big is it?

A micron is a unit of measurement that is 1/25,000 of an inch. 99% of the particles in the air are smaller than 1 micron. Because they are so small, they remain airborne.

Household dust is present even in clean homes and can be composed of mold spores, bacteria, viruses, animal dander, human skin particles, fabric fibers, dust mites, parts of cockroaches, food particles and other debris. About 2,000 microns of matter will fit across the diameter of a pin head!

Human hair Size: About 80-100 microns

Pollen Size: 30 microns

Household dust Size: 10 microns

Pet dander Size: 5 microns

Smoke particles Size: 1 micron

Contact Honeywell

We are currently experiencing higher than normal call and email volumes and ask you to use our support page to find answers to common questions to more quickly serve your needs. We wish you and your family continued health and safety.

Personal Information

Product Information

  • Locate your product’s model number:Usually on the bottom of the machine or on the back of the motor, engraved into the plastic or on a sticker

    Locate your product’s date code: The date code is a 5 digit number stamped into one of the metal prongs on the plug of your unit.

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Contact Us

We are currently working on upgrading our systems to better support your needs. Our regular support will resume Monday, August 31st at 9:00am EST. In the meantime, we invite you to visit our enhanced FAQ’s in an effort to better serve your needs.

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Looking forward to serving you,

Honeywell