College campuses are busy, high-traffic environments, and many of the buildings students use every day were built decades ago. That combination creates a challenge when it comes to air filtration for universities.

A big reason comes down to infrastructure. Many older buildings rely on outdated HVAC systems that were not designed for today’s occupancy levels or air quality expectations. In spaces like dorms, classrooms, and gyms, air is often recirculated more than it’s refreshed, allowing pollutants to build up. That is why university air filtration and purification are becoming a much bigger priority.

That’s where solutions like Maple Air’s PürPlasma™ stand out. It works through existing HVAC systems to actively reduce contaminants in both the air and on surfaces, and is especially well suited for campus environments.

The Mold Problem on Campus

A closer look at the data shows just how widespread this issue is:

• Over 265 cases of mold have been reported on campuses nationwide in the last five years*
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• Mold has been reported in 42 out of 50 U.S. states*
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• 75% of Ivy League schools have reported mold on campus*
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• 76% of the top 25 schools in the U.S. (based on 2024 U.S. News Best National University Rankings) have also experienced mold issues*

This problem goes far beyond isolated dorm rooms. It's a systemic issue affecting the quality of learning, living, and working environments across entire campuses.
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Why University Air Filtration Is a Growing Priority

Indoor air quality plays a role in how well students focus, sleep, and stay healthy overall.

On a typical college campus, thousands of students share classrooms, housing, dining halls, and recreational spaces. That level of density can cause even small air quality issues to spread quickly. Mold, airborne bacteria, and chemical pollutants can settle on surfaces throughout buildings.

For facilities teams, the challenge goes beyond fixing issues as they come up. It comes down to keeping air quality consistent across different buildings, especially older ones that were never designed for today’s ventilation needs.

The Difference Between Air Filtration and Air Purification on Campus

When people talk about university air filtration, they are often thinking about filters. And filters do play an important role.

Traditional filtration systems, like MERV or HEPA filters, are designed to trap particles as air passes through them. That works well for dust and some allergens, but it has limits. Filters rely on airflow, so anything that doesn’t pass through the system can remain in the space. They also do not address gases, odors, or contaminants that settle on surfaces.

That is where university air purification comes in. Air purification technologies, such as Maple Air’s PürPlasma™, go a step further by interacting with contaminants. Instead of just capturing particles, they help break them down in the air and on surfaces. This is especially important on campuses, where pollutants are constantly being introduced throughout the day.

Understanding this difference helps explain why many schools are moving beyond basic filtration and looking at more complete air cleaning systems.

Common Air Quality Problems in Campus Buildings

Mold is one of the most talked-about issues, but it is only part of the picture.

Campus buildings deal with a wide range of air quality challenges. In dorms, allergens and moisture can build up quickly. In gyms and locker rooms, bacteria and odors are common. Labs and art studios often introduce VOCs from chemicals, materials, and equipment. Older heating systems can also produce gases like carbon monoxide and nitrogen oxides.

These issues often exist at the same time, especially in larger buildings with heavy use. That is why many schools are looking for a more complete air cleaning system for their universities, which they can rely on across different environments.

How Universities Are Addressing Indoor Air Quality

More universities are starting to take a proactive approach to indoor air quality instead of reacting to problems after they happen.

Schools like Purdue University and Penn State have already invested in long-term air quality strategies. The goal is to create healthier environments across entire campuses, not just in response to isolated issues like mold outbreaks.

Facilities managers are typically looking for solutions that can work across multiple building types, integrate with existing HVAC systems, and operate without constant maintenance. Systems that can run in the background without disrupting daily campus life are especially valuable.

How Plasma-Based Air Purification Works in University Buildings

Plasma-based systems take a different approach from traditional filtration.

Instead of waiting for air to pass through a filter, they create energized molecules that move through the space and interact with contaminants directly. These molecules react with pollutants like mold spores, bacteria, VOCs, and gases, helping break them down into simpler, less harmful compounds.

Maple Air’s PürPlasma™ technology uses this process within a building’s HVAC system. As air circulates, it distributes these molecules throughout the space, treating both the air and surfaces at the same time.

This setup makes it flexible for campus use. It can be installed in ductwork to cover entire buildings or used as wall-mounted units in common areas. In college athletics facilities where it has already been installed, testing has shown up to 97.9% improvement in air quality and 97.7% improvement on surfaces.

When evaluating air filtration for universities, this kind of whole-building coverage is a key advantage.

What to Look for in a University Air Purification System

Not all systems are built the same, so it helps to know what to look for.

A strong air cleaning system for universities should:

Cover large areas or entire buildings, not just single rooms
Be ozone-free and safe for students, faculty, and staff
Treat both air and surfaces, not just airborne particles
Integrate with existing HVAC systems
Be backed by third-party testing or real-world results

These factors make a big difference when systems are used across a full campus with varying building types and usage patterns.

Frequently Asked Questions About Campus Air Filtration

What is the best air filtration system for a university?

The best air filtration system for universities depends on the building, but many colleges are moving toward solutions that combine filtration with active air purification to address a wider range of contaminants.

How does air purification differ from air filtration in campus buildings?

Filtration captures particles as air passes through a filter. Purification actively reduces contaminants throughout the space, including in the air and on surfaces.

Can one system cover an entire university building?

Yes. Systems like Maple Air’s PürPlasma™ that integrate with HVAC ductwork can treat air across an entire building, while additional units can be used in high-traffic areas if needed.

Is plasma air purification safe for students and staff?

When properly designed and certified, plasma systems are safe. Look for systems that meet zero-ozone standards and have been independently tested.

A Practical Step Toward Cleaner Campus Air

Improving indoor air quality on campus does not have to mean a full infrastructure overhaul. Many schools are finding ways to upgrade air quality using systems that work with what they already have.

Better air supports healthier students, fewer disruptions, and a more comfortable learning environment. It is also becoming part of how universities think about long-term campus planning and wellness.

See how Maple Air’s university air purification system can work in your campus buildings. Contact us at info@getmapleair.com to request an estimate or learn more.