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HV103 - Air Conditioning
Week 1 (January 1- 5)
Lecture 1: Unit 35 (50:08)
Lecture 2: Unit 35 Part 2 (45:18)
Quiz
Lecture 3: Unit 35 Part 3 (14:46)
Review (6:27)
Supplemental: Thermal Comfort (21:21)
Supplemental: Relative Humidity, Wet Bulb & Dry Bulb (33:39)
Supplemental: Enthalpy & Air Flow Calculations (21:25)
Supplemental: Indoor Air Pollutants, HVAC by Design, & Comfort Criteria (30:32)
Week 1 Test
Test
Week 1 Grades
Quiz Grade
Test Grade
Week 2 (January 8 -12)
Lecture 1: Unit 36.1 - 36.6 (45:24)
Lecture 2: Unit 36.7 - 36.12 (19:19)
Quiz
Lecture 3: Unit 36.13 - 36.16 (28:23)
Review: Unit 36 (4:57)
Supplemental: How Air Conditioning Works (23:46)
Supplemental: Refrigeration Cycle Components (33:40)
Supplemental: Refrigerant Lines (12:02)
Supplemental: Install and Line Brazing Demonstration (7:27)
Supplemental: Heat Loss/Heat Gain, Attic Ventilation, and Swamp Coolers (21:27)
Supplemental: Single Stage/Double State Variable Speed Cooling (4:18)
Supplemental: Split Systems Pros vs Cons (27:13)
Week 2 Test
Test
Week 2 Grades
Quiz Grade
Test Grade
Week 3 (January 15 -19)
Lecture 1: Unit 13 (24:08)
Lecture 2: Unit 14 (49:29)
Quiz
Lecture 3: Unit 15 (25:22)
Review: Units 13, 14, & 15 (4:26)
Supplemental: Bi-Metallic Strips, Pressure Gauges, & Thermistors (23:01)
Supplemental: Thermocouples, Temperature Sensors, & the Difference Between Pressure Sensors, Transducers & Transmitters (26:46)
Supplemental: Thermostat Function, Wiring a Line Voltage Thermostat, and the Mercury Thermostat (21:58)
Supplemental: Pressure Switches, Troubleshooting, and the Fan Relay on the Electrical Board (27:57)
Supplemental: Contactor Troubleshooting (15:15)
Week 3 Test
Test
Week 3 Grades
Quiz Grade
Test Grade
Week 4 (January 22 - 26)
Lecture 1: Unit 24.1-24.13 (55:49)
Lecture 2: Unit 24.14-24.23 (25:49)
Quiz
Lecture 3: Unit 24.24-24.29 (28:57)
Unit 24 Review (6:24)
Supplemental: Metering Device Types (9:11)
Supplemental: Most Common Expansion Devices (7:17)
Supplemental: TXV vs Piston (Fixed Orifice) (16:32)
Supplemental: Checking a System with the Wrong Size Piston! (8:41)
Supplemental: HVAC Service Call - Clogged Piston (4:13)
Supplemental: Brazing TXV External Equalizing Tube onto Evaporator Coil Suction Line (8:57)
Supplemental: TXV Operation with Different Pressures (6:51)
Supplemental: Diagnosing a Failed TXV (31:46)
Supplemental: The Automatic Expansion Valve (24:01)
Supplemental: The Electronic Expansion Valve (13:52)
Supplemental: How to Mount the TXV Bulb on the Air Conditioning (4:19)
Supplemental: TXV Sensing Bulb Position (7:45)
Week 4 Test
Test
Week 4 Grades
Quiz Grade
Test Grade
Week 5 (January 29 - February 2)
Lecture 1: Unit 40.1 - 40.4 (40:52)
Lecture 2: Unit 40.5 (40:35)
Quiz
Lecture 3: Unit 40.6 - 40.16 (16:23)
Review (5:35)
Supplemental: SEER and EER Explained (27:22)
Supplemental: Cold Room Calculator and Operating Pressures for R22 and R410A (22:12)
Supplemental: 30 Rule and Condensing Discharge Air Temperature (23:32)
Supplemental: Low Ambient Charging and Charging Jacket (23:48)
Supplemental: Troubleshooting High Indoor RH (25:10)
Supplemental: Air Flow Across Coil in High Ambient Temp (13:41)
Week 5 Test
Test
Week 5 Grades
Quiz Grade
Test Grade
Week 6 (February 5 - 9)
Lecture 1: Unit 41.1 - 41.7 (42:15)
Lecture 2: Unit 41.8 - 41.9 (19:59)
Quiz
Lecture 3: Unit 41.10 - 41.15 (56:12)
Unit 41 Test Review (5:15)
Supplemental: Central Air Troubleshooting (18:42)
Supplemental: Most Common Problems (23:15)
Supplemental: Compressor Troubleshooting and Finding Low Voltage Shorts (23:33)
Supplemental: Service Call (Bedroom Zone Not Cooling) (24:42)
Supplemental: Troubleshooting Mistakes and Why Evaporator Coils Freeze (26:57)
Supplemental: Finding Electrical Faults (26:09)
Supplemental: Indicators for Liquid Line Restriction, Low Airflow, and Low Charge (9:29)
Supplemental: Top 10 Thermostat Issues (18:50)
Week 6 Test
Test
Week 6 Grades
Quiz Grade
Test Grade
Week 7 (February 12 - 16)
Lecture 1: Unit 42 (31:03)
Lecture 2: Year-Round Air Conditioning (18:40)
Lecture 3: Preventative Maintenance (30:13)
Quiz
Review: Unit 42 (6:20)
Supplemental: 20 Causes of Low Airflow (9:15)
Supplemental: Air Conditioner Maintenance Tips (32:12)
Supplemental: Yearly Maintenance (14:47)
Supplemental: Routine Maintenance Call (28:23)
Supplemental: BLOG Frosty Freezer Maintenance (11:19)
Supplemental: Service Tips (13:28)
Supplemental: Commercial Preventative Maintenance (15:18)
Supplemental: Heat Pump Maintenance Ride Along (9:04)
Supplemental: Ductless Cleaning and Maintenance - Start to Finish (23:14)
Week 7 Test
Test
Week 7 Grades
Quiz Grade
Test Grade
Week 8 (February 19 - 23)
Lecture 1: Unit 43.1 - 43.5 (41:51)
Lecture 2: Unit 43.6 - 43.7 (24:24)
Quiz
Lecture 3: Unit 43.8 - 43.11 (23:32)
Review: Unit 43 (4:46)
Supplemental: Heat Pump Basics (13:45)
Supplemental: How Heat Pumps Work + Heat Pump Component Walkthrough (24:09)
Supplemental: The Heat Pump Reversing Valve (16:20)
Supplemental: York Heat Pump Installation (21:43)
Supplemental: How Geothermal Systems Work (8:26)
Supplemental: Geothermal System in Different Applications (17:36)
Supplemental: Water Source Heat Pump + LL Dryer Disassembled (20:30)
Supplemental: Types of Mini Splits (15:01)
Supplemental: Mini Splits Parts Explained (19:36)
Supplemental: How its Actually Made (4:51)
Week 8 Test
Test
Week 8 Grades
Quiz Grade
Test Grade
Week 9 (February 26 - March 1)
Lecture 1: Unit 43.12 (38:32)
Lecture 2: Unit 43.13 - 43.18 (29:09)
Quiz
Lecture 3: Unit 43.19 - 43.26 & Unit 44 (20:05)
Review: Unit 43 & Unit 44 (5:01)
Supplemental: Heat Pump Troubleshooting (14:51)
Supplemental: Heat Pump Operation & Defrost in Heat Mode (37:21)
Supplemental: How to Read a Heat Pump Wiring Schematic (14:53)
Supplemental: How Defrost Works (16:41)
Supplemental: Defrost Board Testing & Bypass for Cooling (19:12)
Supplemental: Heat Pump Not Heating House (Service Call) (22:23)
Supplemental: Float Switch Maintenance (10:10)
Week 9 Test
Test
Week 9 Grades
Quiz Grade
Test Grade
Week 10 (March 4 - 8)
Review 1: Unit 35 (6:25)
Review 2: Unit 36 (4:53)
Review 3: Units 13 - 15 (4:25)
Review 4: Unit 24 (6:18)
Review 5: Unit 40 (5:35)
Review 6: Unit 41 (5:16)
Review 7: Unit 42 (6:21)
Review 8: Unit 43 pt. 1 (4:47)
Review 9: Unit 43 (4:58)
Quiz
Week 10 Test
Test
Week 10 Grades
Quiz Grade
Test Grade
Supplemental: Air Flow Across Coil in High Ambient Temp
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