Carbon Monoxide and Associated Dangers

I.     Course Prefix/Number: AHR 107

       Course Name: Carbon Monoxide and Associated Dangers

       Credits: 2 (2 lecture; 2 lab)

II.    Prerequisite


III.   Course (Catalog) Description

This course will cover how to evaluate buildings that may possess a high level of carbon monoxide due to being tightly sealed to reduce air infiltration. HVACR technicians and first responders can gain knowledge on how to analyze building structure and eliminate the hazards associated with carbon monoxide poisoning.  The course is designed to prepare students to take the ESCO Institute Carbon Monoxide Certification test and gain certification.

IV.   Learning Objectives

A. Identify the causes of CO contamination and the resulting illnesses.
B. Learn of the available instruments and meters that measure CO concentrations.
C. Understand appropriate mixture of natural gas and air for proper combustion..
D. Learn how to analyze the negative pressure that causes the reverse flow of flue gases.
E. Learn methods of correcting the CO contamination problem by proper flue gas venting

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

VI.   Sequence of Topics

A. Carbon Monoxide
1)    Signs and symptoms of Carbon Monoxide (CO) poisoning
2)    Health effects
3)    Sources of CO poisoning
4)    Test instrument calibration
5)    Warning devices
6)    Code Compliance
7)    First response
8)    How much CO is too much?
9)    CO air free standard

B. Combustion
1)    Principles of combustion gases for technicians
2)    Controlled gas fuel and combustion
3)    Advantages of measuring O2 vs CO2
4)    Relationship between O2, CO2, and Excess air
5)    Fuel delivery, Air, Combustion and By-products
6)    Acceptable Combustion test results

C. Pressure measurements
1)    Pressure measurements for Buildings HVAC Installation, Service and Maintenance
2)     Closed door effect
3)    Effects of House tightness and Zone Tightness

D. Using available forms for verification and compliance

VII.  Methods of Instruction

Classroom instruction and laboratory exercises as appropriate.
Course may be taught as face-to-face, hybrid or online course.

VIII. Course Practices Required

A.    All laboratory safety rules must be followed by students.
B.    All  quizzes and exams and lab assignments must be completed.
C.    Frequent tardiness will result in an absence.
D.    Each student must participate in class/shop practices.
E.    Do not leave the class for the evening without notifying your instructor.
F.    Safety goggles must be worn at all times in the lab during lab.
G.    All tools, instruments and equipment must be returned to their appropriate place
and clean-up work area.

IX.   Instructional Materials

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

Texts to be chosen by instructor.

X.    Methods of Evaluating Student Progress

Average of two quizzes, plus mid-term, plus final exam. Three (3) absences lowers grade one letter; six (6) absences results in “F” grade.

XI.   Other Course Information

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

Resources and support for LGBTQ+ students can be found at