Which types of airborne particles can air filters in warm air heating systems trap?

The selection of lint, dust, and airborne particles as the answer highlights the comprehensive capability of air filters used in warm air heating systems. These filters are designed to capture a variety of contaminants in the air, thereby improving indoor air quality.

Lint comes from fabrics and can accumulate within the heating system, while dust consists of microscopic particles that can include pollen, pet dander, and other allergens. The term “airborne particles” encompasses a broad range of substances, including germs, spores, and other pollutants. This versatility is crucial as it reflects the filter's necessity to trap not just large particles, but also smaller pollutants that could negatively affect health.

This understanding of the filtration capabilities is key for ensuring systems operate efficiently and maintain clean air circulation, making the correct choice an inclusive representation of the variety of particles air filters manage within heating systems.