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.
Professional cleaning involves an HVAC professional servicing every element of your systemâs heating and cooling elements, such as supply and return air ducts, diffusers, grilles, exchangers, coils, fans, drip pans, and the air conditioning vents. This clears out dust, mold, and pollen.