Portable air purifiers with a HEPA filter are the best for this situation because you can bring the machine with you, wherever you go and stay for longer periods of time, Zamora-Martinez said.

If you're shopping for a new air purifier or vacuum cleaner, you'll likely come across the term 'HEPA filter'. HEPA stands for 'high efficiency ... writer found when he tested his with a smoke machine ...

“HEPA stands for high-efficiency particulate air, and it typically refers to a filter inside a machine,” explains Manisha Relan, MD, an allergist. “For home use, it can be found in air ...

I set the machine up to shoot fake smoke directly into the Shark vacuum’s hose while it was running to make spotting air gaps easy—and I found a ton. The HEPA filter itself was tight ...

Most air purifiers come with two different filters: a prefilter and a HEPA filter. Some even have a third filter. Each manufacturer's recommendations will vary in terms of cleaning the filters.

JOHN WALKER [email protected] The president of the Fresno Teachers Association is demanding that Fresno Unified purchase and install powerful HEPA filter machines that mirror the machines that ...

If you're shopping for a new air purifier or vacuum cleaner, you'll likely come across the term 'HEPA filter ... found when he tested his with a smoke machine). It's also worth being aware ...