HVAC Airmen ensure base airflow

Air filters around the base are checked for dust weekly and replaced as needed.

U.S. Air Force Senior Airman Jesse Brown, 20th Civil Engineer Squadron heating, ventilation and air conditioning (HVAC) apprentice, changes out filters in an HVAC system at Shaw Air Force Base, S.C., Aug. 30, 2017. Air filters around the base are checked for dust weekly and replaced as needed. (U.S. Air Force photo by Senior Airman Ashley Maldonado)

If the belts in the system are too loose, air does not flow properly throughout the building, causing the air to be too hot or too cold.

U.S. Air Force Staff Sgt. Steffanos Botros, 20th Civil Engineer Squadron heating, ventilation and air conditioning (HVAC) technician, inspects belts in an HVAC system at Shaw Air Force Base, S.C., Aug. 30, 2017. If the belts in the system are too loose, air does not flow properly throughout the building, causing the air to be too hot or too cold. (U.S. Air Force photo by Senior Airman Ashley Maldonado)

The HVAC shop is in charge of more than 1,000 units across the base, Poinsett Electronic Combat Range near Wedgefield, S.C., and the Wateree Recreational Area near Camden, S.C.

U.S. Air Force Senior Airman Jesse Brown, 20th Civil Engineer Squadron heating, ventilation and air conditioning (HVAC) apprentice, inspects an air filter at Shaw Air Force Base, S.C., Aug. 30, 2017. The HVAC shop is in charge of more than 1,000 units across the base, Poinsett Electronic Combat Range near Wedgefield, S.C., and the Wateree Recreational Area near Camden, S.C. (U.S. Air Force photo by Senior Airman Ashley Maldonado)

HVAC Airmen solve maintenance problems through use of wiring, schematic drawings and analyzing construction.

U.S. Air Force Staff Sgt. Steffanos Botros, 20th Civil Engineer Squadron heating, ventilation and air conditioning (HVAC) technician, checks air filters at Shaw Air Force Base, S.C., Aug. 30, 2017. HVAC Airmen solve maintenance problems through use of wiring, schematic drawings and analyzing construction. (U.S. Air Force photo by Senior Airman Ashley Maldonado)

HVAC Airmen install, maintain and operate HVAC systems and equipment.

U.S. Air Force Senior Airman Jesse Brown, 20th Civil Engineer Squadron heating, ventilation and air conditioning (HVAC) apprentice, inspects an HVAC system to ensure it is running properly at Shaw Air Force Base, S.C., Aug. 30, 2017. HVAC Airmen install, maintain and operate HVAC systems and equipment. (U.S. Air Force photo by Senior Airman Ashley Maldonado)

The HVAC shop maintains more than $30 million worth of HVAC units around the base.

U.S. Air Force Staff Sgt. Steffanos Botros, 20th Civil Engineer Squadron heating, ventilation and air conditioning (HVAC) technician, inspects an HVAC system to ensure it does not need maintenance and the filters are clean at Shaw Air Force Base, S.C., Aug. 30, 2017. The HVAC shop maintains more than $30 million worth of HVAC units around the base. (U.S. Air Force photo by Senior Airman Ashley Maldonado)

SHAW AIR FORCE BASE, S.C. -- U.S. Air Force Senior Airman Jesse Brown, 20th Civil Engineer Squadron heating, ventilation and air conditioning (HVAC) apprentice, changes out filters in an HVAC system at Shaw Air Force Base, S.C., Aug. 30, 2017. Air filters around the base are checked for dust weekly and replaced as needed. (U.S. Air Force photo by Senior Airman Ashley Maldonado)