Air Quality

Indoor Air Quality (IAQ)

The overall quality of air inside your home, including levels of pollutants, allergens, humidity, and ventilation that affect your health and comfort.

What Is a Indoor Air Quality (IAQ)?


Indoor air quality encompasses everything about the air you breathe inside your home — from dust and allergens to humidity levels and chemical pollutants. The EPA estimates that indoor air can be 2-5 times more polluted than outdoor air. Your HVAC system plays a major role in IAQ through filtration, ventilation, and humidity control. Poor IAQ can cause or worsen allergies, asthma, headaches, and fatigue. Solutions include better filtration, air purifiers, UV lights, and proper ventilation.

Why It Matters for Your Home

Most people spend 90% of their time indoors, making indoor air quality a significant health factor. If your family suffers from allergies, respiratory issues, or your home feels stuffy or has persistent odors, your HVAC system may be part of the solution. Improving IAQ often involves a combination of better filtration, humidity control, and ensuring adequate fresh air ventilation.

Concerned about your home's air quality? Call Trademark Tek at 541-500-0663 for an evaluation.

Related Terms


➜ Air Filter

➜ MERV Rating

➜ Humidity

Quick Facts


Air Quality

Also Known As

Indoor Air Quality (IAQ)