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.
HVAC Mechanic I Salaries. How much does a HVAC Mechanic I make? The median annual HVAC Mechanic I salary is $42,649, as of March 31, 2017, with a range usually between $36,624-$50,087, however this can vary widely depending on a variety of factors.