In the wake of COVID-19, indoor air quality became a top priority across commercial and institutional buildings. Ventilation strategies were reevaluated and HVAC systems were reconfigured to bring in more fresh air and increase air exchanges. While these updates helped reduce the risk of airborne transmission, they also introduced new challenges—especially when seasonal changes come into play.

In this episode of Critical Response Stories, the BMS CAT team highlights a common issue facilities teams face during seasonal switchover: making well-intentioned changes without fully understanding the consequences. For instance, bringing in more outside air can improve indoor air quality, but if not properly maintained or adjusted, it can create additional strain on HVAC systems or throw off humidity and temperature control.

Too often, teams assume a simple adjustment will solve a complex problem, but HVAC systems operate best with expert oversight. That's why seasonal transitions should always involve consultation with mechanical contractors or indoor environmental professionals. They can help assess how modifications will affect energy usage, occupant comfort, and system performance across the heating or cooling season.

The key takeaway is not just to react, but to respond wisely. Changes to ventilation and air quality strategies should be informed by data, experience, and collaboration with trusted partners. When it comes to seasonal switchover, a thoughtful approach can prevent costly missteps.