Regular air duct cleaning involves the professional cleaning of the spa’s HVAC systems, including air ducts and vents, to remove dust, allergens, and microbial contaminants. Clean air ducts help maintain good indoor air quality, reduce the spread of airborne pathogens, and create a more comfortable environment for clients and staff. Regular maintenance of the HVAC system ensures that the air circulating within the spa is fresh and clean, which is particularly important in enclosed spaces where treatments are performed.