what is the name of the vent that stops the heat from coming in when the ac is on?

Asked by Jul 03, 2017 at 06:28 PM about the 2004 BMW 6 Series 645Ci Coupe RWD

Question type: General

2 Answers

15

A car's air system works in only a couple of ways. Air Conditioners work by filtering and drawing air in from the outside and then running it through a system of tubes and hoses that cool the air before running it out of the vents inside your car. Heat is generated similarly, except that it draws in filtered air from outside and then runs the air over a heating coil (regulated by the engines cooling system...the radiator, coolant, etc.) before pumping it into your car. Alternatively, both systems can also recirculate the air inside the car, rather than draw the air in from outside. If you have heat coming through your vents with the AC on, you probably need your AC recharged or your AC needs to be serviced. Heated air from the engine shouldn't enter the vents or be felt inside the car, since the climate control system only draws air from outside the car or from inside the cabin.

81,305

Temperature door. It's located under the dash. HTH. -Jim

Your Answer:

BMW 6 Series Experts

  • #1
    Tom Demyan
    Reputation
    370
  • #2
    tenspeed
    Reputation
    160
  • #3
    Buckwild55
    Reputation
    130
View All

Related Models For Sale

Used BMW 7 Series
108 Great Deals out of 4,727 listings starting at $1,600
Used BMW 5 Series
402 Great Deals out of 16,836 listings starting at $2,500
Used Mercedes-Benz CLS-Class
59 Great Deals out of 1,814 listings starting at $5,495
Used BMW 3 Series
979 Great Deals out of 29,399 listings starting at $950
Used Mercedes-Benz S-Class
145 Great Deals out of 6,207 listings starting at $1,000
Used Mercedes-Benz E-Class
396 Great Deals out of 18,208 listings starting at $2,495
Used Chevrolet Corvette
83 Great Deals out of 14,634 listings starting at $3,900
Used BMW M3
15 Great Deals out of 1,481 listings starting at $4,995
Used BMW M5
7 Great Deals out of 707 listings starting at $9,000
Used Mercedes-Benz C-Class
628 Great Deals out of 25,218 listings starting at $600

Used Cars For Sale

2018 BMW 6 Series For Sale
337 listings starting at $63,998
2017 BMW 6 Series For Sale
4 Great Deals out of 76 listings starting at $41,999
2016 BMW 6 Series For Sale
5 Great Deals out of 119 listings starting at $32,995
2015 BMW 6 Series For Sale
32 Great Deals out of 711 listings starting at $30,495
2014 BMW 6 Series For Sale
9 Great Deals out of 230 listings starting at $26,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.