ACR 115 Air Distribution and Balancing

Campus Location:
Effective Date:
ACR 104, SSC 100 or concurrent


Course Credits and Hours:
3.00 credits
3.00 lecture hours/week
1.00 lab hours/week
Course Description:

This course provides background needed to estimate, design, and select equipment for residential heating and air conditioning systems. Heat loss/gain load calculations and design duct systems to conform to industry standards are covered. Air balancing instruments are introduced.

Required Text(s):

Obtain current textbook information by viewing the campus bookstore online or visit a campus bookstore. Check your course schedule for the course number and section.

Additional Materials:


Schedule Type:
Classroom Course


Core Course Performance Objectives (CCPOs):
  1. Evaluate different types of air distribution systems and associated components. (CCC 2, 5; PGC 7)
  2. Apply techniques used to predict and measure air-flow. (CCC 2, 3, 6; PGC 4, 5, 7)
  3. Analyze actual and theoretical scenarios to ascertain load estimations, component location, and proper duct placement. (CCC 1, 4, 6; PGC 4, 7)

See Core Curriculum Competencies and Program Graduate Competencies at the end of the syllabus. CCPOs are linked to every competency they develop.

Measurable Performance Objectives (MPOs):

Upon completion of this course, the student will:

  1. Evaluate different types of air distribution systems and associated components.
    1. Compare duct components normally found in residential applications.
    2. Examine types of air duct configurations and their applications.
  2. Apply techniques used to predict and measure air-flow.
    1. Identify the types of air balancing instruments, and discuss their applications.
    2. Determine air-flow using the temperature-rise method.
    3. Gauge velocity pressure using an inclined manometer.
    4. Gauge system velocity pressure using a vane anemometer.
    5. Determine system cubic feet per minute (CFM) using a vane anemometer.
    6. Determine system CFM using the temperature-rise method.
    7. Adjust system diffusers to proper CFM using a velometer.
  3. Analyze actual and theoretical scenarios to ascertain load estimations, component location, and proper duct placement.
    1. Calculate round and square duct size when given the friction rate and required CFM.
    2. Determine duct velocity when given friction rate and duct size.
    3. Identify equipment, duct, and diffuser locations for residential applications.
    4. Calculate heat gain and heat loss for a typical residential application in accordance with Air Conditioning Contractors of America (ACCA) Manual-J (including duct distribution plan and equipment list).
Evaluation Criteria/Policies:

The grade will be determined using the Delaware Tech grading system:

90 100 = A
80 89 = B
70 79 = C
0 69 = F

Students should refer to the Student Handbook for information on the Academic Standing Policy, the Academic Integrity Policy, Student Rights and Responsibilities, and other policies relevant to their academic progress.

Final Course Grade:

Calculated using the following weighted average

Evaluation Measure

Percentage of final grade

Quizzes (Formative) (equally weighted)


Projects (2) (Summative) (equally weighted)


Lab Competency (Summative) (equally weighted)




Core Curriculum Competencies (CCCs are the competencies every graduate will develop):
  1. Apply clear and effective communication skills.
  2. Use critical thinking to solve problems.
  3. Collaborate to achieve a common goal.
  4. Demonstrate professional and ethical conduct.
  5. Use information literacy for effective vocational and/or academic research.
  6. Apply quantitative reasoning and/or scientific inquiry to solve practical problems.
Program Graduate Competencies (PGCs are the competencies every graduate will develop specific to his or her major):


  1. Demonstrate professional behaviors that satisfy workplace expectations and include adherence to safety and environmental concerns related to the field.
  2. Service commercial refrigeration and residential heating, ventilation, and air conditioning (HVACR) systems, and interpret related electrical wiring diagrams and schematics.
  3. Apply theories of electricity and high and low voltage controls to the HVACR field.
  4. Explain scientific principles as they relate to HVACR system operations.
  5. Safely use tools, instruments, and equipment related to the HVACR industry.
  6. Explain the principles of operation, service, and repair of residential HVACR and commercial refrigeration systems.
  7. Identify best practices for proper installation of HVACR equipment and systems.
Disabilities Support Statement:

The College is committed to providing reasonable accommodations for students with disabilities. Students are encouraged to schedule an appointment with the campus Disabilities Support Counselor to request an accommodation needed due to a disability. A listing of campus Disabilities Support Counselors and contact information can be found at the disabilities services web page or visit the campus Advising Center.

Minimum Technology Requirements:
Minimum technology requirements for online, hybrid, video conferencing and web conferencing courses.