Coronavirus and Other Contaminants: How To Improve Indoor Air Quality

January 16, 2026

Breathe Easier: How Your HVAC System Can Improve Indoor Air Quality

Did you know people spend about 90% of their time indoors?

Surprisingly, indoor air can be more polluted than outdoor air! The EPA even says indoor air pollution is one of the top environmental dangers in the U.S.

Your home’s HVAC system helps you stay comfortable—but it also plays a big role in keeping your air clean and healthy.

Let’s explore how your system can fight indoor air problems like mold, dust, bad smells, and germs.

Strong Defense Starts with Air Filters

A good HVAC system can help control things like viruses, bacteria, and mold that can make people sick.

How Filters Help:

Air filters trap tiny particles—some smaller than a speck of dust!
The higher the MERV rating, the better the filter is at catching these particles.
But filters only work when the HVAC system is running.

What About HEPA Filters?

HEPA filters are used in hospitals and can trap 99.97% of particles as small as 0.3 microns—that’s super small! They improve indoor air quality and may help with your health. However, they haven’t been tested for viruses like COVID-19.

Air Purifiers: Extra Help for Cleaner Air

Air purifiers clean the air by pulling in dirty air and pushing out clean air. These systems are installed inside your HVAC ductwork and work while air flows through them.

Air Purifiers Help With:

Allergy relief
Removing bad smells
Catching mold, pollen, and pet dander

Humidity Levels Matter

Viruses spread less when the air isn’t too dry or too damp. The ideal indoor humidity level is between 40% and 60%.

Large buildings usually have systems to control this.
Most homes don’t, but adding a humidifier can help your air quality and health.

What Is an Air Scrubber?

At LA Construction Heating and Air, we install the Air Scrubber by Aerus—a powerful air cleaning device that uses ActivePure® Technology.

What Does It Do?

This device attaches to your HVAC system and helps remove:

Pollution
Germs and bacteria
Pet dander
Odors
Dust

How It Works:

Sends out negative ions that grab pollutants in the air and on surfaces.
Uses UV light and metal tubes inside the device to clean the air passing through.
Helps clean areas your regular filter might miss.

Air scrubbers don’t just clean air inside the device—they also help clean surfaces around your home.

While it hasn’t been tested for COVID-19, it has been shown to reduce bacteria like MRSA and other common triggers of allergies and asthma.

We're Here to Help You Breathe Better

At LA Heating & Air, we know how important clean indoor air is for your health. Your HVAC system can be a powerful tool for fighting bacteria, mold, flu viruses, and more.

Have questions about indoor air quality solutions? We’re here to help.

Call us today at (818) 341-3406 to learn more about:

HVAC maintenance
Air scrubbers
Filters and purifiers
Indoor air quality options for your home or business

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