While HVAC (Heating, Ventilation, and Air Conditioning) systems regulate temperature in buildings, they often fall short in air filtration. Many assume HVAC systems fully filter the air, but their MERV-rated filters handle only larger particles and can’t address all airborne contaminants. This can force the HVAC system to work harder, especially in buildings with inadequate ventilation. To enhance air quality, portable air purifiers are a valuable supplement. They remove pollutants and increase the air exchange rate, improving overall air cleanliness. Understanding that HVAC systems alone don’t ensure clean air highlights the need for additional purification for optimal indoor air quality.