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Air Flow

How does air-flow work within a car?
I was wondering how does the air flow work when you just turn on the fan in the car without the AC on? How does particles not enter into the car through vents? Which filter, filters it? cabin air filter? or air filter? And when i say particles I mean like literally particles, materials such as rocks, small leaves etc? Thanks in advance.
excuse me I meant how does air go from outside of the car to the inside of the car.
The air comes in through the ducts right in front of the windshield. The grates keep large particles from getting in. It passes through the cabin air filter where dust particles are taken out, then gets into your cabin.
The air filter is for the engine.
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Airesearch Aircraft Air Flow Regulator Valve 106502-4 | ![]() |
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Blueair CAB011 CleanAirBall Air Purifier $49.95 The Blueair CAB011 CleanAirBall air purifier features a unique spherical shape that maximizes air flow and efficiency. |
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Auto Repair: Mass Air Flow Sensors - Testing and Replacing (1 of 2)
Half the vents in my house have poor air flow. How can I DIY and fix?
It is a one floor ranch. Air flow in all the vents in the basement are great. Half the vents upstairs work great and 1/2 I can only feel poor lukewarm air (when the AC is on) only when I take of the vent cover and put my hand 5 inches inside. My sister said some of it started when she cleaned the vents one time. It's central air/heat.
EG: On one side of the wall, poor/little air flow BUT on the other side, spectacular air flow ... help.
It is a one floor ranch. Air flow in all the vents in the basement are great. Half the vents upstairs work great and 1/2 I can only feel poor lukewarm air (when the AC is on) only when I take of the vent cover and put my hand 5 inches inside. My sister said some of it started when she cleaned the vents one time. It's central air/heat.
EG: On one side of the wall, poor/little air flow BUT on the other side, spectacular air flow ... help. Also, we regularly change the air flilter.
close the vents to rooms you don't go into often and close the doors (laundry room for example). My thermostat upstairs is in the master bedroom. Usually my room cools before my sons rooms at the other end of the house and the A/C shuts off. I kept toying with the vents in my room until there rooms were cool like mine. Now that side of the house is pretty close to the same temperature as my bedroom at all times.
It sounds like whomever ran the ducts for the basement tapped into the same A/C ducts that were only meant for the main floor. A/C units are listed as tons. I have a 1700 square foot rental that I just installed a unit into. It was a 3 ton unit but I increased it to 3.5 tons. Either close all the vents to the basement or get a separate unit for each floor.
Good Luck
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