There are three distinct types of muscles: skeletal muscles, cardiac or heart muscles, and smooth (non-striated) muscles.
HVAC technicians are responsible for the installation, maintenance and repair of heating, ventilation and air conditioning (HVAC) systems. As an HVAC technician, your job duties may include inspecting existing systems and making recommendations intended to improve the efficiency and/or safety of that system's performance. HVAC-R techs may also work on refrigeration systems.
Job Description for Maintenance Mechanic. Maintenance mechanics work with large production machines, typically in factories. They oversee the machineâs performance and upkeep. Maintenance mechanics coordinate the maintenance of a machine with managers of the organization.