SPECTRUM NEWS VIDEO: With a cold snap hitting the area, it's been a busy week for Norm Millington and his colleagues at Crisafulli Brothers. Many residents are firing up their furnaces this week for the first time in months. In order for them to work properly, Millington says residents need to make sure the exhaust pipe for the furnace and its surrounding areas are clear of leaves. He also recommends keeping the air filter clean and replacing it every 90 days.