Many people worry about outdoor air pollution. But indoor air pollution can be just as big a problem. Indoor air pollution can cause many physical problems like colds and allergy symptoms or cancer. There are simple steps you can take to reduce indoor air pollution though, such as adding house plants and changing the air filter regularly. Changing your air filter regularly can help energy savings and air quality, according to Ted’s HVAC Service. These steps help reduce your home’s air pollution in different ways. They help reduce pollutants, circulate air, or remove humidity.