WASHINGTON, D.C. – Last summer, Global Plasma Solutions wanted to test whether the company’s air-purifying devices could kill covid-19 virus particles but could find only a lab using a chamber the size of a shoebox for its trials. In the company-funded study, the virus was blasted with 27,000 ions per cubic centimeter.
In September, the company’s founder incidentally mentioned that the devices being offered for sale actually deliver a lot less ion power — 13 times less — into a full-sized room.
The company nonetheless used the shoebox results — over 99% viral reduction — in marketing its device heavily to schools as something that could combat covid in classrooms far, far larger than a shoebox.
School officials desperate to calm worried parents bought these devices and others with a flood of federal funds, installing them in more than 2,000 schools across 44 states, a KHN investigation found. They use the same technology — ionization, plasma and dry hydrogen peroxide — that the Lancet COVID-19 Commission recently deemed “often unproven” and potential sources of pollution themselves.
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In the frenzy, schools are buying technology that academic air-quality experts warn can lull them into a false sense of security or even potentially harm kids. And schools often overlook the fact that their trusted contractors — typically engineering, HVAC or consulting firms — stand to earn big money from the deals, KHN found.
Academic experts are encouraging schools to pump in more fresh air and use tried-and-true filters, like HEPA, to capture the virus. Yet every ion- or hydroxyl-blasting air purifier sale strengthens a firm’s next pitch: The device is doing a great job in the neighboring town.
“It’s a self-fulfilling prophecy. The more people buy these technologies, the more they get legitimacy,” said Jeffrey Siegel, a civil engineering professor at the University of Toronto. “It’s really the complete wild west out there.”
Marwa Zaatari, a member of the American Society of Heating, Refrigerating and Air-Conditioning Engineers’ (ASHRAE) Epidemic Task Force, first compiled a list of schools and districts using such devices.
Schools have been “bombarded with persistent salespersons peddling the latest air and cleaning technologies, including those with minimal evidence to-date supporting safety and efficacy” according to a report released Thursday by the Center for Green Schools and ASHRAE.
Zaatari said she was particularly concerned that officials in New Jersey are buying thousands of devices made by another company that says they emit ozone, which can exacerbate asthma and harm developing lungs, according to decades of research.
“We’re going to live in a world where the air quality in schools is worse after the pandemic, after all of this money,” Zaatari said. “It’s really sickening.”
The sales race is fueled by roughly $193 billion in federal funds allocated to schools for teacher pay and safety upgrades — a giant fund that can be used to buy air cleaners. And Democrats are pushing for $100 billion more that could also be spent on air cleaners.
In April, Global Plasma Solutions said further tests show its devices inactivate covid in the air and on surfaces in larger chambers. The company studies still use about twice the level of ions than its leaders have publicly said the devices can deliver, KHN found.
There is virtually no federal oversight or enforcement of safe air-cleaning technology. Only California bans air cleaners that emit a certain amount of ozone.
U.S. Rep. Robert “Bobby” Scott (D-Va.), chair of the education and labor committee, said the federal government typically is not involved in local decisions of what products to buy, although he hopes for more federal guidance.
In the meantime, “these school systems are dealing with contractors providing all kinds of services,” he said, “so you just have to trust them to get the best expert advice on what to do.”
These go-between contractors — and the air cleaner companies themselves — have a stake in the sales. While their names might appear in school board records, their role in selling the device or commission from the deal is seldom made public, KHN found.
A LinkedIn job ad with the logo for one air purifier company, ActivePure Technology, which employs former Trump adviser Dr. Deborah Birx as its chief medical and science adviser, recruited salespeople this way: “Make Tons of Money with this COVID-killing Technology!!” The commission, the post said, is up to $900 per device.
“We have reps [who] made over 6-figures in 1 month selling to 1 school district,” the ad says. “This could be the biggest opportunity you have seen!”
‘A Tiny Bit of Ozone’
Schools in New Jersey have a particularly easy time buying air cleaners called Odorox: A state education agency lists them on their group-purchasing commodity list, with a large unit selling for more than $5,100. Originally used in home restoration and mold remediation, the devices have become popular in New Jersey schools as the company says its products can inactivate covid.
In Newark, administrators welcomed students back to class last month with more than 3,200 Odorox units, purchased with $7.5 million in federal funds, said Steven Morlino, executive director of Facilities Management for Newark Public Schools.
“I think parents feel pretty comfortable that their children are going to a safe environment,” he said. “And so did the staff.”
Environmental health and air-quality experts, though, are alarmed by the district’s plan.
The Pyure company’s Odorox devices are on California air-quality regulators’ list of “potentially hazardous ozone generators sold as air purifiers” and cannot be sold in the state.
The company’s own research shows that its Boss XL3 device pumps out as much as 77 parts per billion of ozone, a level that exceeds limits set by California lawmakers for the sale of indoor air cleaners and the EPA standard for ground-level ozone — a limit set to protect children from the well-documented harm of ozone to developing lungs.
That level exceeds the industry’s self-imposed limit by more than 10 times and is “unacceptable,” according to William Bahnfleth, an architectural engineering professor at Penn State who studies indoor air quality and leads the ASHRAE Epidemic Task Force.
Jean-Francois “JF” Huc, CEO of the Pyure company, pointed out that the company’s study was done in a space smaller than they would recommend for such a powerful Odorox device. He cautioned that it was done that way to prove that home-restoration workers could be in the room with the device without violating work-safety rules.
“We provide very stringent operating guidelines around the size of room that our different devices should be put in,” he said. But school staffers are often not warned about the problems they could face if a too-powerful device is used in a too-small room, he acknowledged.
You can’t see or smell ozone, but lungs treat it like a “foreign invader,” said Michael Jerrett, who has studied its health effects as director of the UCLA Center for Occupational and Environmental Health.
Lung cells mount an immune-like response, which can trigger asthma complications and divert energy from normal lung function, he said. Chronic exposure has been linked to more emergency room visits and can even cause premature death. Once harmed, Jerrett said, children’s lungs may not regain full function.
“Ozone is a very serious public health problem,” Jerrett said.
Newark has some of the highest childhood asthma rates in the state, affecting 1 in 4 kids. Scholars have linked outdoor ozone levels in Newark to elevated childhood ER visits and asthma is the leading cause of school absenteeism there.
Adding ozone into the classroom is “just nightmarish,” Siegel, of the University of Toronto, said.
Morlino said the district plans to monitor ozone levels in each classroom, based on the federal Occupational Safety and Health Administration level for working adults, which is 100 parts per billion.
“In our research of the product,” he said, “we’ve determined it’s within the guidelines the federal government produces.”
While legal for healthy working adults, the work-safety standard should not apply to developing children, said Michael Kleinman, an air-quality researcher at the UC Irvine School of Medicine. “It’s not a good device to be using in the presence of children,” he said.
But the devices are going into schools throughout the state that will not be monitoring ozone levels, acknowledged Dave Matisoff, owner of Bio-Shine, a New Jersey-based distributor of Odorox. He said the main safeguard is informing schools about the appropriate-size room each device should be deployed to, a factor in ozone concentration.
Huc, the CEO, said his team has measured levels of ozone that are higher outdoors in Newark than inside — with his company’s units running.
“There is a tiny bit of ozone that is introduced, but it’s very, very low,” he said. “And you get the benefit of the antimicrobial effect, you get the benefit of reduction of pathogens, which we’ve demonstrated in a number of studies, and you get the reduction of VOC [volatile organic compounds].”
Meanwhile, despite expert concerns, the devices continue to pop up in classrooms and school nurses’ offices across the state, said Allen Barkkume, an industrial hygienist for the New Jersey teachers union.
He doesn’t blame schools for buying them, as they’re a lot less expensive than overhauling ventilation systems. Teachers often push for the devices in their classrooms, he said, as they see them in the nurses’ offices and think it’ll keep them safe. And superintendents are not well-versed in air quality’s complex scientific concepts.
“Nothing sounds better than something that’s cheap, quiet, small and easy to find, and we can stick them in every classroom,” Barkkume said.
Tested in Shoebox, Sold for Classrooms
While New York officials are “not permitting” the installation of ionization devices due to “potential negative health effects,” schools across the state of New Jersey are installing ionizing devices.
Ten miles away from Newark in Montclair, New Jersey, parents have been raising hell over the new Global Plasma Solutions’ ionizing devices in their children’s classrooms. The company website promises a product that emits ions like those “created with energy from rushing water, crashing waves and even sunlight.”
The devices emit positive and negative ions that are meant to help particles clump together, making them easier to filter out. The company says the ions can also reduce the viral particles that cause covid-19.
But Justin Klabin, a building developer with a background in indoor air quality and two sons in the district, was not convinced.
He spent hours compiling scientific evidence. He created painstaking YouTube videos picking apart the ionizers’ viability and helped organize a petition signed by dozens of parents warning the school board against the installation.
Even so, the district spent $635,900 on installing ionizers, which would go in classrooms serving more than 6,000 kids. The devices are often installed in ducts, an important consideration, the company founder Charles Waddell said, because the ions that are emitted lose their power after 60 seconds.
But the company’s shoebox study and inflated ion blast numbers that helped sell the product last year leave a potential customer with little sense of how the device would perform in a classroom, Zaatari said.
“It’s a high cost for nothing,” Zaatari said. The company has sued her and another air-quality consultant for criticizing their devices. Of the pending case, Zaatari said it is a David-versus-Goliath situation, but she will not be deterred from speaking on behalf of children.
“Size of the [test] chamber has proved not to play a role in efficacy results but rather ion density,” GPS spokesperson Kevin Boyle said in an email. The company notes by its covid-inactivating test results that they “may include … higher-than-average ion concentrations.”
He also said the company is proud to meet the ASHRAE “zero ozone” certification.
Glenn Morrison, a professor of environmental science and engineering at the University of North Carolina, reviewed a March GPS study on a device combating the covid virus in the air. The device appears to reduce virus concentrations, he said in an email, but noted it would not be very effective under normal building conditions, outside a test chamber. “A cheap portable HEPA filter would work many times better and have fewer side effects (possibly ozone or other unwanted chemistry),” he wrote.
Other parents joined Klabin’s campaign, including Melanie Robbins, the mom of a kindergartner and a child in pre-K. Armed with her background in nonprofit advocacy, she reached out to experts. She and other parents spoke at local government meetings about their concerns.
In April, the superintendent told parents the school would turn off the devices, but parents say they haven’t turned them all off.
“As far as I understand, the district has relied only on information from GPS, the manufacturer,” Robbins said during a Montclair Board of Education meeting via Zoom on April 19. “This is like only listening to advice from Philip Morris as to whether smoking is safe or not.”
Dan Daniello, of D&B Building Solutions, an HVAC contracting company, defended GPS products during the meeting. He said they are even in the White House, a selling point the company has made repeatedly.
The catch: A GPS contractor installed its ionization technology in the East Wing of the White House after it was purchased in 2018 — before covid emerged, according to GPS’ Boyle. But the company was still using the White House logo as a marketing image on its website when KHN asked the White House about the advertising in April. It was taken down shortly thereafter.
Boyle said GPS was “recently informed that the White House logo may not be used for marketing purposes, and promptly complied.”
The Montclair school district did not respond to requests for comment.
“I want to bang my head against the wall, it’s so black-and-white,” Robbins said. “Admit this is a poor purchase, the district got played.”
Selling ‘the Big Kahuna’
Academic air-quality experts agree on what’s best for schools: More outside air pumped into classes, MERV 13 filters in heating systems and portable HEPA filters. The solution is time-tested and effective, they say. Yet as common commodities, like a pair of khaki pants, these items are not widely flogged by a sales force chasing big commissions.
After covid hit, Tony Barron said the companies pitched air purifying technology nonstop to the Kansas district where he worked as a facility manager last fall.
Pressure came from inside the school as well. Teachers sent links for air cleaners they saw on the news. His superintendent had him meet with a friend who sold ionization products. He got constant calls, mail and email from mechanical engineering companies.
The hundreds of phone calls from air cleaner pitches were overwhelming, said Chris Crockett, director of facilities for Turner USD 202 in Kansas City, Kansas. While he wanted to trust the contractors he had worked with, he tested four products before deciding to spend several hundred thousands of dollars.
“Custodial supply companies see the writing on the wall, that there’s a lot of money out there,” he said. “And then a lot of money is going to be spent on HVAC systems.”
ActivePure says on its website that its air purifiers are in hundreds of schools. In a press release, the company said they were “sold through a nationwide network of several hundred franchises, 5,000 general contractors/HVAC specialists and thousands of individual distributors.”
Enviro Technology Pros, founded in January, is one company pitching ActivePure to HVAC contractors. In a YouTube video, the founders said contractors can make $950 for each air-cleaning device sold, and some dealers can make up to $30,000 a month. Citing the bounty of the billions in federal relief, another video touted ready-made campaigns to target school principals directly.
After KHN asked ActivePure for comment, the Enviro Technology Pros YouTube videos about ActivePure were no longer accessible publicly.
ActivePure did not respond to requests for comment but has said its devices are effective and one is validated by the Food and Drug Administration.
An Enviro Technology Pros founder, Rod Norman, told KHN the company was asked to take the posts down by Vollara, a company related to ActivePure. He called sales to schools “the big kahuna.”
Shortly after he spoke with KHN, the website for his own company was taken down.
In an Instagram post that also disappeared, the company had asked: “4000 classrooms protected why not your kids?”
Shoshana Dubnow and Christina Jewett contributed to this report which also ran in CNN and KHN (Kaiser Health News), a nonprofit news service covering health issues. It is an editorially independent program of KFF (Kaiser Family Foundation) that is not affiliated with Kaiser Permanente.