{"id":10969,"date":"2026-01-08T19:33:26","date_gmt":"2026-01-08T19:33:26","guid":{"rendered":"https:\/\/cannabisindustryjournal.com\/?post_type=news_article&amp;p=38237"},"modified":"2026-01-08T19:33:26","modified_gmt":"2026-01-08T19:33:26","slug":"this-company-wants-your-dirty-grow-air-filters","status":"publish","type":"post","link":"https:\/\/cannitrol.com\/blog\/this-company-wants-your-dirty-grow-air-filters\/","title":{"rendered":"This Company Wants Your Dirty Grow Air\u00a0Filters"},"content":{"rendered":"<div id=\"wp_fb_like_button\" style=\"margin:5px 0 5px 5px;float:right;height:100px;\"><script src=\"http:\/\/connect.facebook.net\/en_US\/all.js#xfbml=1\"><\/script><fb:like href=\"https:\/\/cannitrol.com\/blog\/this-company-wants-your-dirty-grow-air-filters\/\" send=\"true\" layout=\"standard\" width=\"450\" show_faces=\"false\" font=\"arial\" action=\"like\" colorscheme=\"light\"><\/fb:like><\/div><div><img src=\"https:\/\/cannitrol.com\/blog\/wp-content\/uploads\/2026\/01\/this-company-wants-your-dirty-grow-air-filters.png\" class=\"ff-og-image-inserted\" \/><\/div>\n<p><span data-preserver-spaces=\"true\">It is not uncommon for industries outside cannabis to adapt their technologies to address challenges unique to this maturing sector. <a href=\"https:\/\/www.aafintl.com\/\">American Air Filter International<\/a> (AFF) is one such company, bringing decades of experience in air filtration for critical environments such as pharmaceutical clean rooms, food manufacturing facilities, hospitals, and even jet fuel applications.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">According to Nikki Sasher, a microbiologist and head of the Clean Air Laboratory at American Air Filter International, cannabis cultivation facilities face a host of airborne risks, with mold at the top of the list. Once mold enters a grow, the financial consequences can escalate quickly, from destroyed harvests to failed compliance tests. Beyond lost revenue, there are serious biosecurity and worker health concerns tied to inhaling mold spores. In cases where Aspergillus reaches the lower lungs, Sasher notes, the mold can colonize and continue to propagate inside the body.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">In 2022, a Trulieve employee died after suffering an asthma attack linked to prolonged exposure to ground cannabis dust in her workplace. Following the incident, OSHA cited the company for failing to implement adequate dust control measures, including proper ventilation and the use of HEPA filtration on vacuum equipment.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">Health officials and researchers have since identified a range of respiratory hazards common in cannabis cultivation and processing facilities. These include mold and fungi, pesticides and chemical residues, and terpenes and other volatile organic compounds. Many of these compounds create strong odors and can interact with other airborne agents to form irritants that pose both acute and long-term health risks.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">These incidents present a growing safety and occupational health challenge within the rapidly expanding cannabis industry, one that is increasingly difficult to ignore.<\/span><\/p>\n<h4><strong>Filtration Is Not Yet an Industry-Wide Standard<\/strong><\/h4>\n<p><span data-preserver-spaces=\"true\">Despite these risks, comprehensive air filtration is far from universal across cannabis operations. Sasher explains that geography plays a role. Drier climates, such as Nevada, tend to experience fewer mold issues than states like Michigan, Colorado, and New York, where temperature swings and higher humidity create ideal conditions for microbial growth.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">Greenhouses, in particular, present ongoing challenges due to constant water activity created by irrigation systems and plant respiration. Sasher frequently sees mold outbreaks occur in drying rooms, where freshly harvested plants retain moisture. If mold is already present in the room or circulating through the air handling system, spores can easily settle onto wet plant material. Drying rooms are typically smaller and more enclosed than other areas of a cultivation facility, making them among the highest-risk environments in the entire operation.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">The use of high-tech air filtration systems has only been around for less than twenty years; some sectors still need to catch up to the standards required in food and pharmaceutical manufacturing, such as adhering to minimum efficiency ratings, change-out intervals, locations, first-in, first-out process flow, and hazard analysis.<\/span><\/p>\n<h4><strong>AFF Wants Your Dirty Filters<\/strong><\/h4>\n<p><span data-preserver-spaces=\"true\">To spark greater industry awareness around the benefits of proper air filtration, American Air Filter International has launched a free filter-testing program for cannabis cultivators. Through the initiative, growers<\/span> <span data-preserver-spaces=\"true\">are invited<\/span> <span data-preserver-spaces=\"true\">to submit used air filters from their facilities, allowing AFF to analyze real-world contamination and build a clearer picture of airborne risks across the sector.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">According to Sasher,<\/span> <span data-preserver-spaces=\"true\">the<\/span> <span data-preserver-spaces=\"true\">filters<\/span> <span data-preserver-spaces=\"true\">are evaluated<\/span> <span data-preserver-spaces=\"true\">for efficiency, resistance,<\/span> <span data-preserver-spaces=\"true\">and<\/span> <span data-preserver-spaces=\"true\">pressure drop,<\/span> <span data-preserver-spaces=\"true\">as well as<\/span> <span data-preserver-spaces=\"true\">downstream mold capture to determine what is circulating in process-facing air.<\/span> <span data-preserver-spaces=\"true\">AFF also uses scanning electron microscopy to examine the filter media at the microscopic level, revealing how particulate matter, such as mold spores, dust, and plant material, accumulates and impacts performance over time.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">To expand the scope of the research, AFF has partnered with Dr. Alison Justice of the Cannabis Research Center. Together, the organizations are collecting data<\/span> <span data-preserver-spaces=\"true\">that will help<\/span> <span data-preserver-spaces=\"true\">quantify air quality risks and translate them into practical guidance for cultivators.<\/span><\/p>\n<h4><strong>Exposed Areas in Cultivation Facilities<\/strong><\/h4>\n<p><span data-preserver-spaces=\"true\">Modern cultivation facilities rely on complex climate control systems that include HVAC units, humidifiers, and dehumidifiers, each requiring filters with different efficiency ratings.<\/span> <span data-preserver-spaces=\"true\">Sasher notes that many of the filters currently in use fall<\/span> <span data-preserver-spaces=\"true\">below<\/span> <span data-preserver-spaces=\"true\">recommended standards, a gap AFF hopes to validate through its research partnership with the Cannabis Research Center.<\/span> <span data-preserver-spaces=\"true\">The goal is to help growers better understand which efficiency ratings are needed in different parts of the facility<\/span> <span data-preserver-spaces=\"true\">to meaningfully reduce risk<\/span><span data-preserver-spaces=\"true\">.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">Mold spores, Sasher emphasizes, are ubiquitous. Air filtration is only one engineering control among many, alongside practices such as room fogging and sanitation protocols. Once mold<\/span> <span data-preserver-spaces=\"true\">is introduced<\/span> <span data-preserver-spaces=\"true\">into a facility, it can be<\/span> <span data-preserver-spaces=\"true\">extremely difficult<\/span> <span data-preserver-spaces=\"true\">to eliminate.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">One uniquely cannabis-specific challenge is the presence of trichomes. These microscopic, sticky particles easily become airborne during cultivation and processing, where they accumulate on filters, restrict airflow, and degrade filtration performance. As part of the testing program, AFF is evaluating how sticky versus non-sticky particulate matter affects filter lifespan and efficiency. The findings could help growers better determine optimal change-out schedules and identify operational factors that accelerate filter failure.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">For Sasher, biosecurity is the most compelling reason to invest in proper air filtration. Through its collaboration with Dr. Justice, AFF aims to merge air quality science with cultivation expertise to produce data-driven research that the industry currently lacks. The partnership<\/span> <span data-preserver-spaces=\"true\">is focused<\/span> <span data-preserver-spaces=\"true\">on developing practical guidance around filtration standards, airflow management, preventative maintenance, and standard operating procedures, areas where formal benchmarks are still largely absent.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">Looking ahead, the research team plans to identify pilot cultivation sites where<\/span> <span data-preserver-spaces=\"true\">filtration can be evaluated<\/span> <span data-preserver-spaces=\"true\">directly within active grow environments.<\/span> <span data-preserver-spaces=\"true\">By measuring conditions before and after filtration upgrades, they<\/span> <span data-preserver-spaces=\"true\">hope<\/span> <span data-preserver-spaces=\"true\">to quantify the impact on contamination levels and overall plant health.<\/span> <span data-preserver-spaces=\"true\">Sasher points to similar work in agricultural settings, where improved air filtration reduced livestock mortality rates by double digits, delivering measurable economic gains.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">While cannabis-specific results will take time, Sasher believes the approach has the potential to deliver actionable insights that the industry can implement quickly. Even cultivators who are not using AFF products, she says, will be able to apply the findings to strengthen biosecurity, protect workers, and reduce costly crop losses.<\/span><\/p>\n<h4><strong>Beyond Particulates: Managing Odors and Emissions<\/strong><\/h4>\n<p><span data-preserver-spaces=\"true\">While much of the focus in cultivation facilities centers on particulate filtration, Sasher emphasizes that molecular, carbon-based filtration plays an equally important role in cannabis operations. These systems<\/span> <span data-preserver-spaces=\"true\">are designed<\/span> <span data-preserver-spaces=\"true\">to scrub gases and volatile compounds from outgoing air, an increasingly critical requirement as cultivation and extraction facilities operate closer to residential and commercial neighborhoods, and as consumption lounges come online.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">In cannabis, terpenes are responsible for strong odors, as well as gases released during extraction processes that use hydrocarbons such as butane. These gas-phase emissions are subject to strict environmental and safety standards, particularly in regulated markets where operators are required to control odors and limit volatile organic compound emissions.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">American Air Filter International addresses this challenge through a dual filtration approach. Pleated particulate filters support plant health and worker safety by capturing airborne contaminants within the facility, while carbon-based molecular filtration systems target gas-phase pollutants before exhaust is released<\/span><span data-preserver-spaces=\"true\">\u00a0outdoors. Together, these systems help operators remain compliant with local regulations while reducing environmental impact.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">Sasher also points to a key differentiator in AFF\u2019s gas-phase filtration program: the ability to test and monitor the remaining life and gas-holding capacity of carbon filters. By measuring remaining adsorption capacity, AFF provides operators with data-driven guidance on when to replace filters<\/span><span data-preserver-spaces=\"true\">.<\/span> <span data-preserver-spaces=\"true\">This<\/span> <span data-preserver-spaces=\"true\">reduces guesswork, prevents performance failures, and supports more predictable maintenance schedules.<\/span><\/p>\n<p><span data-preserver-spaces=\"true\">As regulators, communities, and workers place increasing scrutiny on air quality, molecular filtration is becoming a necessary extension of cultivation and extraction infrastructure rather than an option. As the industry inches toward rescheduling and ultimately descheduling, GMP-certified facilities will be required, and with that comes clean-air filtration.<\/span><\/p>\n<p>CONTACT NIKKI SASHER IF YOU WOULD LIKE TO PARTICIPATE IN THE FREE AIR FILTER STUDY: nsasher@aafintl.com<\/p>\n<p>Listen to Nikki Sasher\u2019s full interview on the <a href=\"https:\/\/innovating-cannabis-podcast.simplecast.com\/episodes\/170-new-dirty-air-filter-initiative-for-growers\">Innovating Cannabis Podcast.<\/a><\/p>\n<div class=\"sharedaddy sd-sharing-enabled\">\n<div class=\"robots-nocontent sd-block sd-social sd-social-icon-text sd-sharing\">\n<h3 class=\"sd-title\">Share this:<\/h3>\n<\/p><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>It is not uncommon for industries outside cannabis to adapt their technologies to address challenges unique to this maturing sector. American Air Filter International (AFF) is one such company, bringing decades of experience in air filtration for critical environments such as pharmaceutical clean rooms, food manufacturing facilities, hospitals, and even jet fuel applications. According to [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10309,5179,10803,9290,7069,9,8504,10908,1,3,5219,61,1736],"tags":[10314,5181,10815,9295,7071,8530,10909,5234],"_links":{"self":[{"href":"https:\/\/cannitrol.com\/blog\/wp-json\/wp\/v2\/posts\/10969"}],"collection":[{"href":"https:\/\/cannitrol.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cannitrol.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cannitrol.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cannitrol.com\/blog\/wp-json\/wp\/v2\/comments?post=10969"}],"version-history":[{"count":0,"href":"https:\/\/cannitrol.com\/blog\/wp-json\/wp\/v2\/posts\/10969\/revisions"}],"wp:attachment":[{"href":"https:\/\/cannitrol.com\/blog\/wp-json\/wp\/v2\/media?parent=10969"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cannitrol.com\/blog\/wp-json\/wp\/v2\/categories?post=10969"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cannitrol.com\/blog\/wp-json\/wp\/v2\/tags?post=10969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}