yes, because the a/c compressor in operating in the defrost mode.
Not unless your heater core leaks.
because it have a presser
Condensation may cause sizzling and popping noises within the burner area during heating periods.
Evaporation and condensation.
pollution
Yes it does
No.
Do you mean the defroster fan? If so yes if it blows the main engine circuit breaker in the fuse block.
One reasons a Dodge W 250 defroster may not work is the blower motor relay. This can be replaced easily. If it isn't the relay, there may be a problem in defroster door binding. A mechanic will be able to determine the cause.
what would cause all power windows to only work once in awhile and defroster to go out on a 1997 dodge intrepid
could be a vacuum line off
global worming