HEPA is a filter-performance term
A HEPA-labelled filter does not automatically mean every particle entering a vacuum stays inside the machine.
Sealing matters
Air bypass around filters or poor seals can reduce the value of a high-efficiency filter.
Replacement cost matters
A washable pre-filter and a replaceable final filter can have different maintenance schedules.
Avoid health guarantees
Vacuum filtration can be part of cleaning, but a consumer appliance should not be presented as treating respiratory conditions.
General consumer information only. Do not mix cleaning chemicals or improvise electrical, chimney, high-access, pressurized, drain or other safety-critical work. Follow Canadian product labels, recall notices and the exact manufacturer’s instructions.