Do not assume that opening every register will improve air quality or reduce energy use in every HVAC system. Follow the equipment maker's guidance and ask an HVAC professional before changing how the system is balanced. Keep return-air grilles clear so the equipment can move air as designed.
For indoor-air concerns
EPA recommends reducing pollutant sources and ventilating with clean outdoor air when appropriate; filtration can supplement those steps. No filter removes every pollutant. Duct cleaning is not a general air-quality guarantee: EPA says routine cleaning has not been shown to prevent health problems.
Consider duct cleaning only when a specific condition is documented, such as substantial visible mold inside hard-surface ducts or HVAC components, vermin inside the ductwork, or excessive debris released from supply registers.
Local next steps
In Hampton Roads neighborhoods such as Little Creek, a photo inspection can document an accessible duct concern before service is recommended. If the concern is a pest entry point rather than duct debris, Universal Pest in Virginia Beach serves the region. Compare the tier-specific benefits of the Total Home Health plans.