White Dust From Air Vents

It is not coming from outside the car or the cabin air filter would stop it.

White dust from air vents.

Your a c evaporator is the source of this white powder. New home has excessive dust coming through air vents what to check. White flakes powder coming from the air conditioning vents model e90 e91 e92 e93 3 series vehicles produced from may 31 2006 to september 9 2007 situation the customer states that at times white flakes or powder comes from the air conditioning vents. For most people the white dust is nothing to be concerned about.

Cause the cause is surface oxidation of the evaporator in the heating and air. Discussion starter 1 jan 6 2014. Sealed ducts prevent dust. White dust is usually caused by mineral content in the water that goes into a humidifier.

Joined jan 6 2014 2 posts. Multiple toyota and lexus models suffer from a buildup of white dust on the dash. We just moved into a new home and the air vents blow dust when the ac is on. This dust is being made in your car.

Hey folks i tried searching the forum for any previous posts on the this topic. The dust can also be found in the air conditioning vents tucked up against the windshield and on the front of the passenger window trim. I live in a new suburb where home building and construction is still going on all around us. When we have the air conditioner on the dust blows into the house.

Jump to latest follow 1 7 of 7 posts. New home is very dusty inside. White powder white dust in air vents. My guess is that the problem is not dust coming through the ducts but coming in from around the ductwork and pulling dust into your living spaces from the attic.

Seal the gaps around the ductwork where it vents into the room and you should notice a big difference in your dust levels. Now the white dust could be aluminum oxide or aluminum rust as the fins break down. The evaporator is made of tubes covered with aluminum fins.