how do cars with no ac defrost the windshield?

[SiLenZe]

how do cars with no ac defrost the windshield?

 

[boominXplorer]

paper towels

 

[IAmTodd]

The heater? Or draws cooler air from outside.

 

[SiLenZe]

well i think they would be SOL if there is a lot of moisture outside. ie if its raining, or muggy.

 

[bipolarbob]

Huh?ince when do you use a/c to defrost window?

 

[Rob_B]

Originally posted by bipolarbob
Huh?ince when do you use a/c to defrost window?

When you use defrost the A/C is autmatically cycled so you are blowing dry air onto the windshield to defrost the windows better.

 

[bipolarbob]

My a/c does not work, I have allways used hot to defrost.Allways works.

 

[mick_aka]

Originally posted by SiLenZe
how do cars with no ac defrost the windshield?

many older cars intake air and heat it in exchangers over the exhaust then the air is vented to the screen

 

[BensBud]

Heat. Very quick, very easy - no compressor cycling either. I actually hate that I can't get non-A/C air in my defroster vents.

 

[frickea86]

the main reason the a/c kicks on is so in the winter it gets to run some and the compressor doesn't even run that much, its just enough for it to move some so it doesn't cease up...thats all its for. when u use the defrosters, really all ur doing is trying to make the glass the same temp as inside ur car or just to heat it up enough to make the moisture evap. a/c has nothing to do with it...

adam

 

[BensBud]

True, A/C as a chiller has nothing to do with it, and you can regulate the temperature, but the A/C is always on when the defroster is on (both my '98 and my old '93). If you are tooling along on a sticky summer night in Massachusetts and you need to turn on the defroster, if you don't turn the heat up, you will chill down the windshield. With the A/C blowing on the inside, the window clears (mostly because you're blowing dry air on it), but the windshield is colder than the outside temp, and you get condensation on the outside. Now you're driving down the road having to touch you wipers every few seconds. If you turn off the defroster (or just put the A/C back to panel or floor) without warming the window up first, your condensation on the inside is 100 times worse than when you started. I'd rather be able to pump fresh outside air over my window and call it done - or press a button on the vent panel to turn on/off the A/C. On those muggy nights, I almost always just shut off the air altogether and open the windows.

I really hope it wasn't even in the back of some engineer's mind that this would be a good compressor-anti-seize exercise...

 

[frickea86]

Originally posted by BensBud
I really hope it wasn't even in the back of some engineer's mind that this would be a good compressor-anti-seize exercise...

well thats the resone ford gave me because i had to get the condensor replaced and they said its just and anti-seize exercise but they never said it was a good idea.. ..

adam

 

[BensBud]

Originally posted by frickea86
...but they never said it was a good idea.. ..

adam

LOL! I'm sure it was some never-got-dirty desk goober making up stories!

 

[frickea86]

Originally posted by BensBud
LOL! I'm sure it was some never-got-dirty desk goober making up stories!

nope it was a semi-dirty guy that makes money by "working" on fords...and no stories, i've heard this from a few people....but i'm likeing the never got dirty desk goober, that took somet thought

adam

 

[BensBud]

Fair enough. I certainly don't make money working on Fords. I razz them, but I do like my Ford.