Wipe them off. If they are particularlay soiled, remove them and soak them in a bucket of water and ammonia. If you are going to go that far why not replace them?
If dust is coming from your air conditioner, you did not put in a filter. You will ruin your air conditioner running it without a filter. Also, the vents will get dusty. You need to clean them.
The most common cause of an air conditioner not blowing air is a plugged filter. Be sure your filter is clean.
The air conditioner condenses water from the air. If the air conditioner is not draining correctly this water will spray though the system. Water and moisture are needed to support mould growth. You need to clean and repair your air conditioner drain system.
If central air conditioner turns on but is not blowing through the vents, check the filter. If it is dirty, change it. Change the thermostat into cool, this will defrost the air conditioner.
To prevent bugs from coming through your air conditioner vents, you can install vent covers or screens to block their entry. Regularly clean and maintain your vents to remove any debris or potential entry points for bugs. Additionally, sealing any gaps or cracks around the vents can help prevent bugs from getting inside.
The air of your Chevy trailblazer 2004 blow out of the front vents when the air conditioner is on because the air condition is faulty and it needs repair.
An air conditioner evaporator is the part of the a/c system that the heat in your car transfers to causing cool air to blow from your vents. The blower is in front of it and it sucks air from the inside of your car and across the evaporator then blows out your vents.
Moisture in the air condensing into mist.
Air conditioner freezing up can be caused by low refrigerant levels, dirty air filters, blocked air vents, or a malfunctioning thermostat.
There are usually vents under the tail lights.
Your air conditioner may be overheating due to a dirty air filter, blocked vents, low refrigerant levels, or a malfunctioning fan. To prevent overheating in the future, regularly clean or replace the air filter, ensure proper airflow by keeping vents unobstructed, schedule regular maintenance checks, and promptly address any issues with the fan or refrigerant levels.
I'm investigating this as well. I have a 2008 and have been told the air conditioner is only off when you have the vents on the floor only. Still checking this out.