Air Conditioning and Refrigeration I - AIR 121 at Northern Virginia Community College


         
 
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AIR 121 - Air Conditioning and Refrigeration I
Studies refrigeration theory, characteristics of refrigerants, temperature, and pressure, tools and equipment, soldering, brazing, refrigeration systems, system components, compressors, evaporators, metering devices. Presents charging and evaluation of systems and leak detection. Explores servicing the basic system. Explains use and care of oils and additives and troubleshooting of small commercial systems. Part I of II.
Lecture 2-3 hours. Laboratory 2-3 hours. Total 4-6 hours per week.
3-4 credits

Schedule at Northern Virginia Community College

Spring 2025 ➜

Class # Section Credits Day Time Start Location Mode
28429 AIR 121-01YW 4
 M     
7:00 p.m.-9:55 p.m.
 2025-01-21 Woodbridge P
Fifteen Week
50% of class time meets in person, on campus; students are expected to attend class in person on the days and times listed on the schedule. 50% of class work is completed online, independently, via CANVAS. Reliable internet access and a computer are required.
Hybrid Course
28430 AIR 121-02YW 4
  Tu    
9:35 a.m.-12:30 p.m.
 2025-01-21 Woodbridge P
50% of class time meets in person, on campus; students are expected to attend class in person on the days and times listed on the schedule. 50% of class work is completed online, independently, via CANVAS. Reliable internet access and a computer are required.
Hybrid Course
Fifteen Week
28431 AIR 121-03YW 4
  Tu    
4:00 p.m.-6:55 p.m.
 2025-01-21 Woodbridge P
Hybrid Course
50% of class time meets in person, on campus; students are expected to attend class in person on the days and times listed on the schedule. 50% of class work is completed online, independently, via CANVAS. Reliable internet access and a computer are required.
Fifteen Week
28432 AIR 121-04YW 4
   W   
4:00 p.m.-6:55 p.m.
 2025-01-21 Woodbridge P
Hybrid Course
50% of class time meets in person, on campus; students are expected to attend class in person on the days and times listed on the schedule. 50% of class work is completed online, independently, via CANVAS. Reliable internet access and a computer are required.
Fifteen Week
28433 AIR 121-05YW 4
      Sa
12:00 p.m.-2:55 p.m.
 2025-01-21 Woodbridge P
Hybrid Course
50% of class time meets in person, on campus; students are expected to attend class in person on the days and times listed on the schedule. 50% of class work is completed online, independently, via CANVAS. Reliable internet access and a computer are required.
Fifteen Week
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