Filtration, dehumidification, humidification, special considerations for special environments … anything and everything that pertains Indoor Air Quality, breathing easier, working better, or protecting contents.
Dedicated outdoor air systems (DOAS) have been available for over 20 years, with the primary benefit being the ability to decouple outdoor air tempering from conditioned space thermal loads that can be handled by separate, secondary systems.
A new Center for Disease Control and Prevention (CDC) study involving 196 cooling towers nationwide found that 84% contained Legionella DNA, indicating that the dangerous bacteria was present or had been at some point.
All outside air isn’t created equal, neither is the available engineering guidance, and there isn’t enough preliminary owner/consultant discussion about the pros and cons. Welcome to the air filtration design process.