Basically, the solution to controlling condensation is to reduce and control indoor humidity. Showering, cooking, laundry, indoor plants, pets, aquariums and people are all humidity-producing factors. A backdrafting furnace or water heater is a problem. Gas and oil-fired appliances release a lot of water vapor. A high level of condensation on these units may indicate that the appliances are not vented properly and should be checked.
Many furnaces have a central humidifier, designed to keep interior air from getting too dry.
These can be out of adjustment, releasing too much moisture. Damp basements and crawl spaces are another source of unwanted moisture. Make sure that rain runoff is away from the foundation, concrete basement walls and floors are treated with a masonry sealer and crawl spaces are covered with 6-mil plastic. Limit the number of indoor plants. Your bathroom and any whirlpools, saunas and hot tubs need adequate ventilating fans which draw the air outside.