Honeywell F50E - Manual (Page 20)

White dust is made up of particles that settle out
of the air before they get to the return air duct.
You can help prevent this “white dust” from
settling by running your fan constantly. Also,
• Be sure the return registers are not blocked
with furniture.
• Be sure the discharge ducts are clean (best
done before installing the air cleaner).
• Be sure your clothes dryer is vented to the
outside and is not plugged.
• If you have new rugs or drapes or new
woolen blankets, be aware that the lint from
these items reduces with age.
• In new or remodeled homes, plaster dust or
paint pigment may contribute to “white dust”,
but reduces with time.
• Use of a humidifier may contribute to "white
dust", especially if filled with undistilled
water.
69-0376—4 18
About lint or
"white dust"