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Course Descriptions and Outlines

We offer 469 courses at Northwest Technical College. Select a subject below to get a listing of the courses in that subject. Click on a course to see the description and detailed information about the course. To see when these classes are available to take, please see the Current Class Schedule.

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PLHE 2075

Forced Air Systems Theory

Credits: 3

Description: This course covers gas, fuel oil and electric heating equipment, primarily furnaces. Emphasis is placed on understanding the theory of operation and design of ductwork that exist within an HVAC system. Prerequisite: None

Credit Breakdown: 2/1/0 (Lecture/Lab/On the job training)


This course should help you gain the following abilities and competencies.

Core Abilities

  1. Demonstrate technology skills.
  2. Demonstrate thinking/active learning skills.


  1. Acquire knowledge of major HVAC catagories
  2. Compare benefits and drawbacks to systems
  3. Describe the function and operation of the common furnace systems
  4. Interpret the theory and operation of ventilation systems
  5. Identify, analyze, and compare gas ignition control systems
  6. Identify components of a fuel oil furnace
  7. Acquire knowledge of fuel piping
  8. Describe and understand the effects of positive and negative pressurization of
  9. Analyze the theory and interconnection of other forced air equipment

Guidelines for Success


In compliance with the Americans with Disabilities Act, learners are encouraged to register with the Learning Services Director in the Learning Enrichment Center for assistance with accommodations. It is the learner's responsibility to voluntarily and confidentially disclose information regarding the nature and extent of a disability. The college cannot assume responsibility for providing accommodations or services to learners who have not identified themselves as having a qualifying disability.

Last Updated: 2011-05-23
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