True or False: A duct tightness test is not required for an air handler located in a conditioned space.

A duct tightness test is indeed not required for an air handler located in a conditioned space. This is because the primary purpose of a duct tightness test is to measure and ensure that air is not leaking from ductwork, which can negatively affect the efficiency of the heating and cooling systems. When an air handler is situated within a conditioned space, it is already within the controlled environment that it serves.

Thus, any air that the air handler moves does not travel through ducts located outside of the conditioned space, meaning that the risk of losing conditioned air through duct leaks is substantially minimized. Consequently, the necessity to conduct a duct tightness test in such scenarios is eliminated.

It's important to understand the context of where air handlers are installed when determining the requirements for testing and compliance. In situations involving unconditioned spaces or ductwork that runs through outside areas, testing may be required to ensure operational efficiency and to prevent energy waste.