Chapter 4: Courtrooms
System Description and Control
Courtroom HVAC systems should also serve the following areas:
Judges' chambers suites (when located adjacent to courtrooms)
Trial jury suite
Prisoner holding facilities adjoining the courtroom
Attorney conference/witness waiting rooms
Each of these areas must be provided individual temperature control. Humidity
should be controlled at the main air supply unit. The HVAC system serving the
courtroom and associated areas must function economically for after-hours
The air-handling system in the courtroom must also function as a smoke purge
system. The smoke purge system should either be activated manually or by
The well of the courtroom requires a number of diffusers. The spectator area is
served by a separate group of diffusers, which must be sized to serve the maximum
allowable seating capacity, plus 25% to allow for extra seating. The diffusers
must meet minimum ventilation requirements at no loads, with no appreciable
increase in system noise during load changes.
If a fan system serves more than one courtroom, then the return air from each
courtroom and its associated areas must be ducted directly to the unit.
See Table 4.4 for specific information regarding temperature, air changes,
ventilation, and humidity in the courtroom.