Many cannabis consumers, especially those who enjoy smoking indoors, swear by air filters to help improve air quality and eliminate the odor of cannabis smoke. But do air filters actually work to get rid of cannabis’ signature pungent smell? And if so, which filters are up to the task?
Why Use an Air Filter
Simply put, air filters help to remove pollutants and odors from the air. It is well-known that tobacco smoke is notoriously bad smelling, but can also make indoor spaces some 2.5 times more polluted than outdoor air. But tobacco smoke is not the lone culprit in dirtying up indoor air; a study by San Diego State University found that many things contribute to indoor pollution, including electronics, furniture, cleaning products, candles, frying food, and yes – cannabis smoke.
Types of Air Filters
To pick the best filter for your home you’ll need to keep a few things in mind, like the amount of square footage you’d like to freshen up, what kind of filtration (ionization, HEPA, or carbon), price point, and design. And of course, you’ll want to find a purifier that actually works - because some just don’t.
Air ionizers work by using electricity to emit negative ions that electrically charge air molecules. These negative ions attract air particles that fall on a charged collector plate or mechanical air filter. Unlike other filters, ionization does not use fans and does not require filter replacement. However, charged ions may produce ozone, which can irritate asthma symptoms.
Carbon Air Filters
Carbon air filters work by filtering gasses through a bed of activated carbon (aka activated charcoal). Carbon filters, used frequently by cannabis businesses to mitigate odor, are also used in homes to remove VOC’s and odors, though they do not work for dust, dander, and pollen.
High efficiency particulate arresting (HEPA) filters are frequently utilized in air purifiers and are considered to be very effective at removing odor and pollutants. HEPA filters work by forcing air through a fine mesh that traps harmful and smelly particles. Interestingly, in order for a filter to receive a HEPA designation, it must trap 99.7 percent of particulates.
Regardless of whether you consume cannabis indoors or not, having an air purifier in the home is a great tool to keep the air clean and reduce pollen, dust, smells, and VOCs. But with so many out there, which is the best to help reduce the smell of cannabis?
So, do air filters actually get rid of the smell of cannabis smoke? Buying a quality HEPA filter certainly seems like the best option, but only if you use it whenever you consume indoors. To get the most benefit from your filter, run it regularly and replace filters at the manufacturer’s suggested recommendation.