HVAC blog
HVAC tips, maintenance advice, and energy-efficient solutions from LA Heating & Air Conditioning.

September 23, 2026
Your employees spend 8 hours a day breathing the air inside your building. Poor indoor air quality leads to headaches, fatigue, allergies, and more sick days. It costs you money. LA Heating and Air installs commercial air filtration systems, air scrubbers, and ventilation upgrades for offices and workplaces across Los Angeles.
Fielding air quality complaints in your building? See our commercial HVAC maintenance program in Los Angeles for scheduled filter changes, coil cleaning, duct inspection and airflow testing on a set visit schedule.
Call (818) 660-1062 for a free workplace air quality assessment.
The air inside most commercial buildings is 2 to 5 times more polluted than outdoor air. Your employees breathe this air for 8 hours every day. Poor air quality costs your business real money.
More sick days - Employees in buildings with poor air quality get sick more often. Respiratory infections, allergies, and headaches send people home. Studies show that improving air quality reduces sick days by up to 35 percent.
Lower productivity - Even when employees show up, bad air affects their work. Research shows that clean air improves cognitive function by 60 percent or more. Workers think clearer, make fewer errors, and get more done.
Employee complaints and turnover - When people feel bad at work, they complain. Morale drops. Your best employees start job hunting. Improving air quality shows you care about their health.
Legal and compliance risks - California has strict workplace safety rules. OSHA sets standards for air quality. If your building makes people sick, you could face liability and fines.
When the air inside your building has too much dust, mold, or chemicals, it makes people sick. Poor indoor air quality causes:
Over time, employees exposed to bad air develop chronic health problems. They miss more work. Their performance suffers. And they blame the building.
Dirty air does not just affect lungs. It affects the brain.
Studies from Harvard and other universities show that people score 60 to 100 percent higher on cognitive tests when working in spaces with good air quality. They make better decisions. They solve problems faster. They make fewer mistakes.
One study found that doubling the ventilation rate in an office improved employee performance by $6,500 per person per year. Better air pays for itself.
If a building has bad air, people inside may feel tired, get headaches, or feel sick often. This is known as Sick Building Syndrome. It can lead to more sick days and lower work output. Keeping the air clean can help prevent SBS and keep everyone feeling better.
People work better when they feel good. Clean air and proper temperature make a difference.
When CO2 levels rise because of poor ventilation, employees feel sleepy and tired. Their thinking slows down. Decision-making suffers.
Good ventilation brings in fresh outdoor air and removes stale indoor air. This keeps CO2 levels low and oxygen levels healthy. Employees stay alert and focused.
Temperature and humidity matter too. Air that is too hot, too cold, or too humid makes it hard to concentrate. A well-maintained HVAC system keeps conditions comfortable year-round.
Understanding what contaminates your air helps you fix the problem. Here are the most common pollutants in Los Angeles offices and commercial spaces:
Dust and particulate matter - Dust, dirt, and tiny particles get tracked in from outside and circulate through your HVAC system. In Los Angeles, smog and vehicle exhaust add to the problem.
Volatile organic compounds (VOCs) - These gases come from furniture, carpet, paint, cleaning products, and office equipment. New construction and recent renovations often have high VOC levels.
Mold and mildew - Moisture problems in the building, HVAC system, or plumbing lead to mold growth. Mold spores circulate through ductwork and cause respiratory problems.
Bacteria and viruses - Airborne pathogens spread easily in enclosed spaces. One sick employee can infect an entire floor if the air is not properly filtered.
Carbon dioxide - When too many people work in a space without enough fresh air, CO2 builds up. High CO2 causes drowsiness, poor concentration, and headaches.
Wildfire smoke - Los Angeles businesses face a unique challenge. When fires burn, smoke blankets the Valley. That smoke gets inside through doors, windows, and HVAC systems. Standard filters do not stop it.
Limit chemicals like volatile organic compounds (VOCs) and reduce dust, mold, and pet dander. These pollutants can cause breathing problems and allergies. Using better filters and cleaning often helps.
Fresh air dampers let clean outdoor air flow into the building. This helps remove dirty air and improve IAQ. A licensed HVAC technician should install them and check them regularly to make sure they work properly.
An economizer brings in outdoor air to cool the building without using extra energy. It’s great for air quality and energy savings, but only if it’s working correctly. Have it checked and maintained regularly.
An air scrubber is a device added to your HVAC system that removes pollution, smells, and tiny harmful particles from the air. It also helps clean surfaces. This is especially helpful for people with asthma or allergies.
Routine maintenance is key. It helps catch problems early, keeps the air clean, and ensures your system runs efficiently. Here’s what to focus on:
Sign up for a maintenance plan with automatic reminders so you never miss a check-up.
Investing in good indoor air quality in commercial buildings is not only a matter of health and well-being but also a strategic decision to enhance productivity, reduce absenteeism, and create a conducive work environment for employees. Companies that prioritize IAQ are likely to see positive effects on employee performance and overall business outcomes. It also aligns with regulatory requirements and contributes to energy efficiency and the overall longevity of the building. Contact us online or give us a call today we can help you find solutions for your commercial HVAC system.
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