Why do my car windows fog up?

Question

I have a 1983 Surburban and I noticed in the winter all the windows fog up. I have tried defogger on the windows which worked for a short period of time. What can I do?

Answer 1

the moisture content of the air is leaving the condensation (fog)on your windows. When you exhale this adds alot to the moisture in the air. Your best bet to reduce fogging of the windows is to make sure your car is set to fresh air (not recirculate) and turn the A/C on as this dehumidifies the air.

Answer 2

Humidity interior the vehicle, in many circumstances out of your breath, condenses on the interior the abode windows whilst they're chilly. you have 2 selections: decrease the humidity interior, or heat up the abode windows. Making the abode windows warmer isn't undemanding whilst it extremely is totally chilly exterior. Rear defrosters, with the wires fastened to the abode windows, can do the pastime, yet front abode windows can require extensive blasts of air from the front-defrost vents, which won't sparkling up lots greater desirable than a pair of patches on the window. thankfully, you may decrease the humidity interior by working the air conditioner, even in frigid climate. A/C dehumidifies a vehicle indoors fantastically today. If it extremely is too chilly, bypass forward and run the heater on the comparable time: it won't make any distinction to how briskly the fog will sparkling out of your abode windows. on account which you haven't any longer have been given A/C, you will roll down the abode windows: if the air exterior is far less humid than your vehicle's indoors, because it just about consistently is, then this might help, in spite of if it makes you depressing for a jiffy. Your vehicle might additionally be damp interior first of all. I had an previous Volvo which leaked, and that i observed that leaving it parked with the abode windows open shrink down on the fogging on chilly nights. So air your vehicle out and notice if that helps. After a great hurricane, in basic terms a pair of oz. of water might dribble onto the rear carpet, after which evaporate once I ran the heater the next day.

Answer 3

The heater needs to be set so that there is some outside air coming into the car. If all you are doing is recirculating the air inside the car, the windows will fog. Check your vent/heater settings.

Answer 4

I need more information....If the windows fog with no one in the car,but its running,then you have a leak in your heat/cooling system,probably in the heater core.If they fog with ppl inside,thats normal because heat can travel through the glass,but the moisture can not,so it collects on the glass.

Answer 5

Either HEAVY petting or the temp outside and tempt inside make the windows fog up.

Answer 6

the heat differential between outside and Inside. let the vehicle warm p then use the defogger

Answer 7

as said earlier, the difference in the heat inside and outside your car-probably caused by the air conditioner...If the blinds of your aircon are towards your car's window, a spot of fog forms... there is a similar effect when it's raining cats and dogs or its snowing outside your car...

Answer 8

lol i got to say this lol ,,,keep you wife are gf out of, the car when you in it lol,,, dont you know with both ,, cause heat built up, lol,,,, ok now,, lol ,,, when cold , met a cool air it cause it to fog up,,, i see they got a fog rag you can buy , put out by rain, x ,that help,,, i my self leave a small crack in the side glass to help keep it down, an to let some of the hear out

Answer 9

Replace the heater core its leaking

Answer 10

you got a air leak somewhere,probably around the window packing.thats about where it starts from.