Naperville Air Conditioning Repair. If you've take your furnace remove and seen that it is dirty, then you have to be notified in the side effects and detriment of efficiency it causes. The dirt and dirt that accumulates throughout the air filter definitely makes the flow sluggish, which consequently forces the furnace to operate harder to heat the home.…Naperville Air Conditioning Repair. If you've take your furnace remove and seen that it is dirty, then you have to be notified in the side effects and detriment of efficiency it causes. The dirt and dirt that accumulates throughout the air filter definitely makes the flow sluggish, which consequently forces the furnace to operate harder to heat the home.WWWW…