Typical air vs. spike days
- Annual average PM2.5 (8.03 µg/m³) reflects usual daily exposure.
- Worst-day peak PM2.5 (33.48 µg/m³) is what filtration must handle during bad-air events.
Sections below reference one or both metrics on purpose — that is how HVAC vs. portable guidance differs for Loganville without contradicting EPA-aligned thresholds.
Seasonal Pollen and Humidity
Pollen and mold are the primary drivers of indoor air issues in this part of Georgia. High humidity levels throughout the summer months create an environment where mold spores can thrive, often hitching a ride on dust particles into the ductwork. Seasonal tree pollen, particularly from the heavy pine and oak canopy in Gwinnett County, creates a thick layer of yellow dust that quickly clogs standard filters. This biological load, combined with high humidity, can lead to organic growth on evaporator coils if the filtration isn't handled correctly. Residents near local parks or wooded areas will notice the heaviest accumulation during the spring bloom.
Technician Filter Recommendations
Because PM2.5 peaks exceed 25 µg/m³ and ozone reaches 0.072 ppm, a standard fiberglass filter is insufficient. I recommend a MERV 13 pleated filter to capture the fine particulates seen during peak days. Since ozone levels also spike, a filter with an activated carbon layer is highly effective at neutralizing odors and chemical vapors that standard media cannot touch. In this climate, filters should be inspected every 30 days and replaced at least every 60 to 90 days. The high humidity and heavy pollen load in Georgia mean filters reach their holding capacity faster than in drier regions. Neglecting these changes puts unnecessary strain on the blower motor and reduces the system's ability to effectively dehumidify the home.