Start with the HVAC filter
Use the filter type and replacement schedule appropriate for your HVAC system.
Dust
Dust is not one thing. It can include fibers, skin cells, pet material, soil, pollen and other particles from both inside and outside the house.
Why is my house always dusty?
why is my house so dusty · house dusty even after cleaning · dust coming from vents
What to know
Some dust settles before it ever reaches an HVAC filter. Some gets tracked in. Some is generated inside the home. That is why a whole-home strategy needs to be realistic about what filtration can accomplish.
Use the filter type and replacement schedule appropriate for your HVAC system.
Frequently opened doors, pets, construction, leaky ductwork and return-air paths can influence what moves through the home.
Whole-home filtration can reduce some airborne particles. No honest system can promise that you will never dust again.
Useful next reading
The PUR-HOME Journal connects local conditions and credible public guidance to what homeowners can watch inside their own homes.
That is normal. A consultation starts with what you are noticing, not with a predetermined equipment package.