Home Ventilation System Posted at 11/17/2010 11:05:00 PM 0 comments (+) My sister and I had been talking about buying a home dehumidifier for my parents' house. You see, my family back home lives in a tropical country where it's not only hot year-round, but it's also very humid thus creating an environment conducive for mold and mildew growth. So in order to eliminate this problem and to improve the air quality inside my parents' house, we figured buying a home ventilation system will solve the problem.