Click this link to view o*net’s tasks section for heating and air conditioning mechanics and installers. note that common tasks are listed toward the top, and less common tasks are listed toward the bottom. according to o*net, what are some common tasks heating and air conditioning mechanics and installers perform? select four options. discussions with users to verify heating or cooling system malfunctions pumping oil from a well into a pipeline for transmission overseeing the activities of workers in a hydroelectric power plant installing, connecting, or adjusting thermostats, humidistats, or timers. repairing or replacing defective equipment, components, or wiring. testing electrical circuits or components