what causes a lot of condensation on the interior of a car?

Answer 1

when you park the car close all the vents and switch heater to foot-well setting

Answer 2

The reason has been pretty well covered but another thing you can try to reduce it is to put the aircon on as well as the heater. This will remove the excess water vapour from the air inside the car and reduce the condensation on the glass.

When you first start off put the blower on full directed onto the windscreen. This will help clear the condensation from the screen even before the engine warms up.

Answer 3

I answered this one last week, here it is again.

There can be water vapour in the air and from your breath inside the car as you are driving and invisible. You know when it is freezing outside and you breathe out and see the mist, this is what I mean.

When you leave the car overnight the temperature inside equalizes, when you get in the car in the morning the temperature difference causes the water vapour to condense on the coldest surface which is the inside of the glass.

You can buy vapour traps which use bags of silica gel to absorb the water in the air. They use the same principle as womens sanitary towels and disposable nappies.

if you have a new car the seals should be ok but if your car is older then the seals may be worn and slightly innefective. All cars suffer from this, Brand new or years old but it is more noticable on older ones.

Answer 4

If the carpet is wet on the pass side, their are 2 possibilities. 1 is the heater core might be leaking. you would also notice a sweet coolant smell. The other is that the ac drain plug is indeed plugged. In the engine compartment, look for the ac or heater lines where it goes into the cabin on the firewall. remove the rubber elbow and stick a small screwdriver I the hole. If it was plugged. you could end up letting out 1-2 gallons of musty water. It usually gets plugged with leaves.

Answer 5

Warm air can hold a lot more water vapour than cold air. The air inside a car is warm and damp because people will insist on breathing. When it's cold outside, the windows and any exposed metal get cold. The air touching them cools down and the water vapour condenses onto the cold surface.

Answer 6

Its because its warmer inside the car than outside. Open the windows and the temperature is the same inside and out so then there is no condensation.

Answer 7

1] Wet clothing - inevitable at this time of year.

2] Water leak into the car.

3] Heavy breathing.

Put your air on "fresh", crack a window open a little, have all the vents open

Look for evidence of water getting in - damp carpet, water stains on the trim etc.

Answer 8

Water

Answer 9

Air in the car carries water, it hits the cold windows and it condenses thus you have condensation.

Answer 10

that occurs in my motor vehicle yet not my truck. i understand that's not the heater center so i'm left to ask your self no matter if the melted snow is getting sucked in with the help of the air intake for the heater. My truck seems nicely sealed besides the indisputable fact that the vehicle has drainage gully's lower than the hood/ trunk and recessed wipers that continually get plugged with leaves/ snow.

Answer 11

When it happened to me I found that the sponge type material under the mat in the boot was sopping. The reason was the plugs had come out of their holes. The plugs that hold the carpet down.

Another reason could be that your air vents are clogged up with leaves or you have a leak in the sun-roof.