122 HVAC/R Systems Load Calculations - Digital Delivery

Part Number: DIGITAL HVACR 122
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122 HVAC/R Systems Load Calculations

Credits: 18
Estimated Length: 18 hour(s)
Due: 60 day(s) from enrollment date.

You will need the required text: ACCA Manual J, 8th Abridged Edition (MJ8-AE). This manual provides thorough instructions for estimating heat loss and heat gain for residential structures and helps to simplify complicated procedures that are often used on a variety of home applications. Course 122 provides instruction for completing load calculations by hand, which is necessary before attempting any computerized load program. We focus on following the concepts of MJ8-AE while further simplifying the methodology emphasized in the manual. Students will utilize a "simple" residential structure and follow the steps to calculate both heat loss and heat gain for its location and outdoor design temperatures. This course also covers residential equipment selection focused on the heating and cooling equipment Btu/h loads of a structure. This course is recognized for 18 hours of continuing education (CEHs) applicable to NATE recertification.

A strong working knowledge of HVAC fundamentals before enrollment into this advanced course.

122-Air Properties and Measurement

Compton, Chris ([email protected])
Oakley, Scott admin (soakley)


  • Fundamentals of Load Calculations
  • Heat Loss of a Structure
  • Heat Gain of a Structure
  • Example Heat Loss and Heat Gain Calculation
  • Fundamentals of Equipment Selection
  • Regional Load Calculation Exercises

Expected Course Outcomes:

  • Identify the needed elements of a heat load calculation
  • Understand the benefits of heat load calculation
  • Carry out simple high-level residential heat load calculations


  • 122-1 Fundamentals of Load Calculations
  • 122-1 Terms Definition Exercise
  • 122-1 Module Exam
  • 122-2 Heat Loss of a Structure
  • 122-2 Terms Definition Exercise
  • 122-2 Module Exam
  • 122-3 Heat Gain of a Structure
  • 122-3 Terms Definition Exercise
  • 122-3 Module Exam
  • 122-4 Example Heat Loss and Heat Gain Calculation
  • 122-4 Terms Definition Exercise
  • 122-4 Module Exam
  • 122-5 Fundamentals of Equipment Selection
  • 122-5 Terms Definition Exercise
  • 122-5 Module Exam
  • 122-6 Regional Load Calculation Exercises
  • 122-6 Terms Definition Exercise
  • 122-6 Module Exam
  • 122 Final Exam

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