My 1995 legacy L wgn does not seem to have adequate defrost in cold weather [+20 to - 20F] Ice will form on the windshield in a snow storm and with the heater on full defrost only a small portion of the windshield will stay clear. Colder temp worse problem. Do these cars have an inherently weak defrost system for extreme northeast conditions [upstate new york] or should I look for a problem- vent door not opening/ closing properly, split or disconnected duct hose,other?
Don