Building Air Quality

Why Buildings Are a Different Challenge

A home has one family, one HVAC system, and one person responsible for maintaining it. A building is a different animal entirely.

In a commercial or multi-unit building, air circulates between spaces, systems are shared, occupancy levels change throughout the day, and responsibility for what’s in the air is often split between owners, managers, tenants, and HOAs. The IAQ problems that show up in buildings are also different — CO2 buildup from high occupancy, cross-contamination between units, ventilation systems designed decades ago for different standards, and disputes over who has to fix what.

There’s no shortage of guidance for homeowners. There’s far less plain-language information available for the people managing, occupying, or responsible for larger spaces. That’s what this section is for.

Different Spaces, Different Standards

Buildings are governed by a different set of rules than homes. The main ones that apply in South Florida:

ASHRAE Standard 62.1 sets minimum ventilation rates for commercial buildings — how much outdoor air must come in, for how many people, in what type of space. Restaurants, offices, and schools all have different requirements under this standard.

OSHA sets workplace air quality requirements for occupied commercial spaces — CO2 limits, temperature, ventilation minimums, and employer obligations when occupants report symptoms.

Florida Building Code incorporates many of these standards into law and adds state-specific requirements for HVAC installation, duct systems, and moisture control.

Would you like to learn more about building air quality?

Browse our IAQ in large buildings topics below.

Condos & Apartment Complexes

Shared AC systems, neighboring units, and management companies that control what you can’t. Indoor air in condos and apartments comes with rules, responsibilities, and complications.

 

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Office Buildings

Learn what ventilation standards apply to workplaces, what employees can do, and what employers are actually required to fix.

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Restaurants

Commercial kitchens generate heat, grease, moisture, and CO at levels that demand serious ventilation. Learn what happens when the exhaust system can’t keep up.

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Schools

A single school can have dozens of rooms, multiple AC systems, and hundreds of occupants — all with different ventilation needs.

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Maritime & Yachts

Enclosed cabins, diesel exhaust, bilge gases, and salt air humidity create indoor air quality challenges unique to vessels. Standard residential solutions rarely apply on the water.

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Have a question about indoor air quality in South Florida?

We’re here to help. Whether you’re trying to learn about pollutants in your home or workplace, or just want to point us toward a topic you’d like us to cover — we’d love to hear from you.

South Florida Indoor Air is an independent educational resource dedicated to helping our community breathe better and make informed decisions about the air inside their spaces.

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