1.  General Piping                                                                       (1 item)

2.  General Tubing                                                                      (1 item)

3.  Pipe assembly                                                                       (1 item)

4.  Piping Systems                                                                     (4 items)

5.  Drain Piping                                                                           (1 item)

6.  Valves                                                                                     (1 item)

7.  Piping Specialties                                                                 (1 item)

8.  Pumps                                                                                    (2 items)

9.  Piping insulation                                                                    (1 item)

10.  Hangers and supports (General)                                       (1 item)

11.  Mechanical Sound, Vibration, and Seismic Control       (1 item)

12.  Water treatment for Mechanical systems                         (1 item)

13.  Heating and Cooling Principles                                         (2 items)

14.  Refrigerants                                                                          (1 item)

15.  Load Calculations                                                                (7 items)

16.  Heating and Cooling Equipment                                        (1 item)

17.  Air compressors                                                                  (1 item)

18.  Testing, Adjusting, and Balancing(Tab)                              (2 items)

19.  HVAC Control Fundamentals                                             (1 item )

20.  Control Schematics and Wiring Diagrams                       (1 item)

21.  HVAC Control Systems                                                     (3 items)

22.  Machine Room                                                                    (1 item)

23.  Air Conditioning Systems                                                  (3 items)

24.  Heat Pumps                                                                         (4 items)

25.  Furnaces (Warm Air Heating Equipment)                        (2 items)

26.  Specialized Heaters                                                            (2 items)

27.  Chimneys, Flues, Vents, and Vent Connectors                (3 items)

28.  Combustion Air                                                                    (2 items)

29.  General Fuel Knowledge                                                    (1 item)

30.  Natural Gas                                                                          (2 items)

31.  LP Gas                                                                                  (2 items)

32.  General Duct Systems Knowledge and Principles         (4 items)

33.  Duct Conversions/Equivalencies                                       (4 items)

34.  Mechanical Sheet Metal Devices/Systems                      (2 items)

35.  Metal Ducts                                                                          (3 items)

37.  Fiberglass Ducts                                                                 (1 item)

38.  Filtering Systems                                                                 (1 item)

39.  Ventilation Equipment and Devices                                  (1 item)

40.  Exhaust Systems                                                                 (2 items)

41.  Safety                                                                                    (2 items)