Which statement best describes the main advantage of using dry-bulb temperature control in HVAC systems?

• A. It minimizes energy use in all climates.
• B. It works well in various climates if set up properly.
• C. It always maintains perfect humidity control.
• D. It reduces equipment costs.

Answer: (B)

Focusing on dry-bulb temperature control means keeping the space at a desired air temperature using the dry-bulb sensor. The main advantage of this approach is its versatility across a wide range of climate conditions when the system is designed and configured properly. Because you’re primarily regulating sensible heat with straightforward temperature setpoints, the HVAC system can be sized and operated to deliver comfort in many environments without depending on active humidity control. Humidity will not be directly controlled by this method, so in humid conditions you may still see moisture levels rise unless additional dehumidification or humidity management is added, but the basic temperature control remains effective and broadly applicable when set up correctly.

The other statements aren’t as accurate: energy savings aren’t guaranteed in all climates since latent loads and humidity effects influence overall energy use; perfect humidity control isn’t provided by dry-bulb control alone; and there’s no inherent guarantee that equipment costs will be lower—the economic outcome depends on the specific system design and dehumidification needs.