Indoor air quality and mold management are no longer back-of-house maintenance issues. They are brand issues, guest experience issues, and in many cases, risk management priorities. Nowhere is that clearer than in the global hospitality space, where expectations are high, environments are complex, and consistency across locations is critical.

I recently sat down with two people who think about this every day: Doug Hoffman, executive director of the National Organization of Remediators and Microbial Inspectors (NORMI^TM), and John Greenwell of EcoLife Asia, who consults primarily in the luxury hotel space across Asia and the Middle East.

From maintenance issue to brand promise

Greenwell put it plainly. Global hospitality brands are not just managing buildings—they are managing guest experience and brand trust.

“A hotel can do everything right operationally, but it’s really what the guest feels,” Greenwell explained. “If they walk into a room and it feels stuffy or it smells off, that’s what they remember.”

That insight is reshaping how the strongest properties operate. Rather than treating air quality as something the engineering team handles when a complaint comes in, leading brands are building it into design decisions, brand standards, and daily operations. In Asia, brand standards are often stricter than local jurisdictional requirements, especially regarding relative humidity and particulate levels.

“It’s really moved from the back of the house right into the boardroom,” Greenwell said.

Standardization is the foundation

How do you deliver consistency across dozens of properties operating in different climates? Hoffman pointed to the ANSI/IICRC S520 as the standard of care, with NORMI’s professional practices providing the practical pathway to meet it. But standards on paper are not enough. The work has to reach every person who comes into contact with the property.

“We want the cleaning person on the cleaning cart that’s working out there every single day — when they see a problem, we want them to be able to identify it and hand it up so it can be dealt with,” Hoffman stated. “In some ways, they’re kind of like the first responder.”

The second layer is training facilities and maintenance managers on what proper remediation looks like, even when the work itself is contracted out. Greenwell sees too many properties take a hands-off approach the moment a contractor walks in. Property teams need sufficient understanding to verify that the contractor is following the correct processes and procedures.

NORMI’s strengthened alliance with ISSA has expanded the available training programs, and Greenwell’s program in Asia now delivers content in Mandarin, Japanese, and Vietnamese.

Why Asia raises the difficulty curve

Climate and density push hospitality brands in Asia into a different category of challenge. Many properties operate in hot, humid environments year-round, which means mold pressure is constant rather than seasonal. Add high occupancy, frequent turnover, and 24/7 operations, and small lapses escalate quickly.

A solution that works in Tokyo will not necessarily work in Singapore or Bali. Greenwell said the strongest brands respond by shifting from active fixes to prevention—investing in humidity control, smarter HVAC operation, continuous monitoring, and clearer brand standards while leaving room for local teams to adapt.

“Hospitality leaders are recognizing that IAQ and mold aren’t engineering problems. They’re guest experience, reputation, and asset protection issues,” Greenwell acknowledged. “Once it’s seen that way, the approach can change quite radically.”

See something, smell something, say something

I asked Greenwell to name the biggest mistakes he sees hotels making. His answer was direct: they treat air quality and mold as reactive maintenance issues, focus on temperature while overlooking moisture control, and silo the problem inside engineering.

He has coined a phrase for the staff awareness piece, adapted from the familiar terrorism prevention slogan: “See something, smell something, feel something, then say something.” Too often, he walks into a property and sees condensation on supply vents or smells mold, then asks the staff in that area whether they noticed. They have not.

Hoffman called it a team approach. “Don’t ignore what you see. Don’t ignore what you smell. Don’t ignore what someone’s told you.” The construction industry has long relied on daily toolbox training to keep safety top of mind, and Hoffman believes hospitality could borrow that discipline.

Where leaders should start

For hospitality executives wondering where to begin, Greenwell offered a clear sequence. Reframe air quality and mold as a guest experience and asset protection issue, not a facilities or compliance issue. Focus on prevention rather than reaction. Break down silos so that engineering, housekeeping, and the front office share a common framework. Commit to ongoing training and external audits. Then think at scale—a global framework with flexibility for different climates.

“The brands that get this right don’t start with the technology,” Greenwell explained. “They start with intent and commitment. They decide that air quality is part of the experience they’re selling, and then they build the systems and the structure to support that decision.”

Hoffman closed with a reminder that awareness is the first step, pointing to NORMI’s medical advisory board, chaired by Dr. Andrew Heyman, and a new film, Mold: The Hidden Epidemic, available at NORMI.org.

The leading brands are not waiting for a complaint, a review, or an outbreak to act. They have decided that the air inside their properties is part of the product. Everyone else will have to catch up.