Three-Step HVAC Strategyto Ensure the Safe Return of Building Occupants and Users


Maintain Building Performance


  • Keep HVAC and Electrical Systems Running. Even if buildings are unoccupied, insufficient temperature and humidity control can lead to mold and disease growth. Ensure emergency power systems (e.g., stand-by generators) are operational.
  • Reprogram Systems. One dedicated member from the onsite maintenance team should reprogram systems to match changes in occupancy or operational needs.
  • Maintain Temperature / Humidity Levels. Maintain a temperature between 55 and 80 degrees and a maximum humidity of 60%.
  • Increase Outdoor Air Ventilation. Disable demand-controlled ventilation (DCV). Adjust manual fresh air dampers or electronic dampers, as applicable, such that fresh air intake is maximized, and mold growth risk is mitigated.
  • Maximize Air Circulation. Lock the fan setting on all thermostats in the ON position to ensure continuous air circulation.
  • Validate Controls. Ensure all systems (e.g., thermostats and BAS Systems) are operating safely and efficiently.

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