This is advice for every homeowner, regardless of whether they decide to have their air ducts and HVAC system cleaned or not. Indoor to ensure that your home ventilation system is functioning efficiently and that your air ducts are not contaminated, you need to commit to a preventive maintenance program.
Preventing air duct contamination is done in part by preventing dirt from reaching the inside of your air duct system, and also with a healthy portion of active maintenance. Here are some tips:
- Using the air filter with the highest efficiency that is recommended by the maker of your HVAC system.
- Changing filters on a regular basis.
- Changing filters with increased frequency if you notice build-up or clogging.
- Making sure that there are no missing filters. If one of your vents is missing a filter or there are gaps around the filter, the air, along with contaminants, can enter your HVAC system with ease.
- Insisting that the professionals who maintain or check your HVAC system clean the cooling coils and drain pans.
- Your home's heating and cooling system is especially vulnerable during times of home renovation, construction, or maintenance. During these times you should seal off both the supply and return registers. You should also not operate the air ventilation system until all the dust and debris has been cleaned and removed from your home.
- While air duct cleaning may help lessen the need to dust your home, the more frequently you dust and vacuum, the less often your need to have your air duct cleaned, because you have removed this dust from your home.
- It is best to use a HEPA vacuum cleaner or at least the highest efficiency filter bags your vacuum cleaner can take.
- If your home HVAC system includes in-duct humidification equipment, the humidifier should be operated and maintained in strict accordance with the manufacturer's instructions.

