How often should duct cleaning be performed to maintain air quality?

Regular duct cleaning is essential for maintaining good air quality in residential and commercial spaces, and recommendations often suggest performing this task every 3 to 5 years. This timeframe allows for the effective removal of accumulated dust, allergens, and debris that can build up in the ductwork over time.

Conducting duct cleaning every 3 to 5 years strikes a balance between maintaining air quality and the practicalities of cost and disruption. This interval is generally frequent enough to prevent significant buildup that can lead to issues such as reduced airflow, reduced efficiency of heating and cooling systems, and potential health risks associated with air quality degradation.

Choosing to clean ducts only when they appear visibly dirty may lead to neglecting essential cleaning needs, as contaminants can accumulate out of sight and still adversely impact air quality. Meanwhile, cleaning annually may be excessive for most systems unless specific circumstances warrant it, such as the presence of allergies or pets that might increase the rate of buildup. Therefore, a 3 to 5-year schedule aligns well with general guidelines provided by health and environmental agencies.