Indoor air quality (IAQ) has been a buzzword in the HVAC industry ever since the onset of the pandemic. While many manufacturers have been focused on producing the right equipment to improve IAQ, such as air purifiers and UV lamps, end users have been focused on purchasing the right products for their indoor environments, such as hypoallergenic air filters. But without proper cleaning and maintenance, many products that have been designed to improve the quality of air within a building or home will start to falter. What happens when all of these investments fail to work the way that they are supposed to? That’s where contractors come in.