i don't think i have had this happened before, but i have frost on the inside of my windshield along the top and half way down the sides. is the seal on my windshield done or is there another issue? and no my windows are not open, but i do have the weathertech window deflectors on my car but i would assume frost would be on my side windows if that was the case. is it condensation freezing?

ideas, options?

 

I realize this is an old question, but I would expect to find wet floors in a case like that. If you do, then you need to figure out where the water is coming from. Could certainly be a windshield seal; quite likely.

 

Is the heater core leaking?

 

the heater core and it piping/hoses were replaced this past summer, and i have no wet carpet.unless wet carpet from going into the car from the rain will cause that much condensation in the car. i have to admit, winter here results in rain, followed by the sun popping out to heat everything up, and then dropping below freezing at night and the cycle repeats. but so far it has only happened twice. the real kicker is i just got a chip repaired in the windshield, and if it's the seal that means the whole windshield has to be pulled, and or replaced along with the seal.

 

Cold and wet = condensation. That is why Volvo always runs the AC with the defroster.

 

i never saw this reply until now i don't know why. so if only turn the **** onto defroster when i need it, then it should not happen?

 

When the defroster runs so does the A/C which pulls out the moisture from the air.

 

And with it using up coolant, that can get left behind on the windshield, as it is vaporized....? Yes no?

 

Did you solve the inside frost problem?
I've the same problem in N.S. with my 850 and also have a leak in driver.s front floor.
Also what is the best setting to clear the inside frost?
D.