Heating and Air Conditioning Load Calculations

I.     Course Prefix/Number: AHR 203

       Course Name: Heating and Air Conditioning Load Calculations

       Credits: 3 (3 lecture; 0 lab)

II.    Prerequisite

AHR 101 or consent of department chair

III.   Course (Catalog) Description

Course covers calculation of heating and cooling loads to determine appropriate selection of equipment in new construction. Content includes construction and heat transfer through structure, and computations for heat gains and heat losses for various building structures. This is a classroom course only.

IV.   Learning Objectives

Analyze a building's structure and determine the most suitable equipment for heating and cooling. Conduct energy related calculations for annual energy consumption estimates are included in this course.

V.    Academic Integrity and Student Conduct

Students and employees at Oakton Community College are required to demonstrate academic integrity and follow Oakton's Code of Academic Conduct. This code prohibits:

• cheating,
• plagiarism (turning in work not written by you, or lacking proper citation),
• falsification and fabrication (lying or distorting the truth),
• helping others to cheat,
• unauthorized changes on official documents,
• pretending to be someone else or having someone else pretend to be you,
• making or accepting bribes, special favors, or threats, and
• any other behavior that violates academic integrity.

There are serious consequences to violations of the academic integrity policy. Oakton's policies and procedures provide students a fair hearing if a complaint is made against you. If you are found to have violated the policy, the minimum penalty is failure on the assignment and, a disciplinary record will be established and kept on file in the office of the Vice President for Student Affairs for a period of 3 years.

Please review the Code of Academic Conduct and the Code of Student Conduct, both located online at
www.oakton.edu/studentlife/student-handbook.pdf

VI.   Sequence of Topics

  1. Components of Heat Gains and Losses
  2. Design Conditions
  3. Components of Construction
  4. Heat Transfer Multipliers
  5. (People, Lights and Appliances Residential Heating Loads)
  6. Working through sample heating load calculations in text.
  7. Analysis of structure and effects on Air Conditioning
  8. Summer Temperature Difference
  9. Solar Heat Gain
  10. Shading Effects
  11. Internal Heat Gains, Infiltration and Ventilation loads.
  12. Working through sample Air Conditioning calculations.
  13. Computing Annual Energy Consumption Estimates
  14. Equipment sizing and selection.

VII.  Methods of Instruction

The methods include lectures, videos, class discussions; a mixture of classroom exercise.


Course may be taught as face-to-face, hybrid or online course.

VIII. Course Practices Required

  1. The maximum allowed absences are six (6). Any more will result in a failing grade.
    (Three absences will lower your grade by one letter grade).
  2. All quizzes and exam must be completed.
  3. Three tardiness will be equal to one absence.
  4. Do not leave the class for the evening without notifying your instructor.
  5. Lecture attendance is mandatory.
Course may be taught as face-to-face, hybrid or online course. [Note: the last part of this sentence – starting with “face-to-face” – may be shortened as appropriate.]

IX.   Instructional Materials

Note: Current textbook information for each course and section is available on Oakton's Schedule of Classes.

Books to be chosen by the instructor.

X.    Methods of Evaluating Student Progress

  1. Quizzes, Mid-term and a comprehensive final exam.
  2. Assessment of performance on exercises and laboratory task.
  3. "Hands on" performance evaluation
Note: Current textbook information for each course and section is available on Oakton's Schedule of Classes.

XI.   Other Course Information

Three absences lowers the final letter grade three letters.  Six absences will result in failure of the course. All appropriate safety precautions must be observed during lab sessions.  Any accident must be reported immediately.  The lab must be cleaned and all equipment picked up before leaving.

If you have a documented learning, psychological, or physical disability you may be entitled to reasonable academic accommodations or services. To request accommodations or services, contact the Access and Disability Resource Center at the Des Plaines or Skokie campus. All students are expected to fulfill essential course requirements. The College will not waive any essential skill or requirement of a course or degree program.

Oakton Community College is committed to maintaining a campus environment emphasizing the dignity and worth of all members of the community, and complies with all federal and state Title IX requirements.

Resources and support for
  • pregnancy-related and parenting accommodations; and
  • victims of sexual misconduct
can be found at www.oakton.edu/title9/.

Resources and support for LGBTQ+ students can be found at www.oakton.edu/lgbtq.