How to Test Air Quality in a Commercial Office?
Last updated October 26, 2026
The short answer
Start with a Visual Check
Before buying any device, walk through the office and look for obvious problems. Check for water stains on ceilings, walls, or near windows. Look under sinks, around AC units, and in storage areas for leaks or damp spots. Musty smells often point to hidden moisture or mold growth.
If you spot any water damage, that is a red flag. Even small leaks can affect air quality over time. You can address minor issues yourself, but for larger or hidden problems, consider calling the pros for a water damage inspection. They can find the source and help you plan next steps.
Use Portable Air Monitors
You can buy or rent portable monitors that measure common indoor pollutants. Look for devices that track particulate matter, humidity, carbon dioxide, and volatile organic compounds (VOCs). These are the most useful for a typical office setting.
Place monitors in different areas, like open workspaces, meeting rooms, and near printers or copiers. Run them for at least 24 hours to get a good sample. Record the readings and note any patterns, such as spikes during work hours or after cleaning. This data helps you understand your baseline air quality.
Some monitors also show temperature and humidity. High humidity, above 60 percent, can encourage mold growth. If you see consistent high readings, that is a sign to improve ventilation or address moisture sources.
- Look for mold, musty odors, or visible moisture
- Check HVAC filters and vents for dust or debris
- Monitor humidity, aiming for 30 to 50 percent
- Track carbon dioxide levels, especially in crowded rooms
- Watch for VOC spikes from cleaning products or new furniture
Hire a Professional Tester
For a definitive assessment, you may want to hire a mold professional or an industrial hygienist. They use specialized equipment to sample air and surfaces. These tests can identify specific mold spores, allergens, or chemical contaminants that consumer monitors cannot detect.
A professional will also inspect the building for moisture issues and ventilation problems. They can tell you if your office has a mold problem or if the air quality is within normal ranges. This kind of testing costs money, but it gives you a clear, detailed report you can act on.
Interpret the Results
Once you have test results, you need to understand what they mean. Compare your readings to general indoor air quality guidelines. High particulate levels may mean you need better filtration. High VOCs might come from new paint, furniture, or cleaning supplies.
Improve Office Air Quality
You can take simple steps to improve air quality without major renovations. Increase ventilation by opening windows when weather allows, and make sure the HVAC system is serviced regularly. Change filters on schedule and use high-quality filters that capture smaller particles.
Reduce sources of pollutants by using low-VOC cleaning products and avoiding air fresheners with harsh chemicals. Keep indoor plants that can help filter the air, but be aware they are not a cure-all. If you have ongoing moisture issues, fix them promptly. In humid climates like Daytona Beach, controlling humidity is key to preventing mold.
If you are dealing with water damage or mold, the pros can help with cleanup and restoration. They can also guide you on preventing future problems, such as sealing leaks and improving drainage around the building.
- Service HVAC systems and replace filters regularly
- Use low-VOC paints, furniture, and cleaning supplies
- Fix leaks and dry wet areas within 24 to 48 hours
- Maintain indoor humidity between 30 and 50 percent
- Ensure adequate fresh air intake, especially in winter
Talk to someone now
Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (386) 272-5697Frequently asked questions
How often should office air quality be tested?
There is no set rule. Test when you notice odors, visible mold, or after water damage. Routine checks every few years can also help. If you have many employees with allergy symptoms, more frequent testing may be wise.
Can a home air quality test kit work for an office?
Some kits can give basic readings, but they are often limited. Office environments have more diverse sources of pollutants, like printers and cleaning chemicals. For accurate results, consider professional testing that covers a wider range of contaminants.
What is a safe level of mold in office air?
There is no universal safe level. Mold spores are always present indoors and outdoors. A professional can compare indoor and outdoor samples to see if indoor levels are unusually high. If you have health concerns, see a doctor and address any moisture problems.