Healthy Homes, Part 12: Heating, Air Conditioning, and Ventilating Course

Welcome to InterNACHI's free, online Healthy Homes, Part 12: Heating, Air Conditioning, and Ventilating Course.  This is part 12 of a 14-part Certified Healthy Homes Inspector certification program provided by InterNACHI to members for free. 
The goal of this course is to teach the student how to inspect heating, ventilating, and air conditioning HVAC systems and components, including related safety issues.
Objectives: Upon successful completion, the student will be able to: 
  • identify the different types of standard fuels for heating; 
  • identify the various types of heating and cooling systems; 
  • explain how a heating and cooling system functions; 
  • determine the general safety risks of related to HVAC systems;
  • identify parts of a fireplace; 
  • communicate the safety issues associated with HVAC systems; 
  • perform an inspection related to HVAC; 
  • generate observations related to inspecting HVAC systems and components; and 
  • produce written reports related to observations conducted at a house.

Course Includes:
  • 26 InterNACHI CE credit hours
  • 2.6 CEU
  • 25,252 words 
  • 25 quiz questions in three quizzes
  • Inspection and writing assignment
  • Research and writing assignment
  • 30-question final exam
  • Certificate of Completion

You will learn about the following topics: 
  • Our warming climate
  • Heating
  • Standard fuels
  • Central heating units
  • Space heaters
  • Hydronic systems
  • Direct vent wall furnaces
  • Cooling
  • Air conditioning
  • Circulating fans
  • Evaporation coolers
  • Safety
  • Chimneys
  • Fireplaces

This course has been approved by:
Healthy Homes, Part 12: Heating, Air Conditioning, and Ventilating Course

Course # 4824



Estimated hours for the average student

Academic Engagement

Reading online course instructional material at 140 words per minute


Taking quizzes 


Taking the exam


Conducting a directed and independent inspection study performed according to the Standards of Practice, including the development of an inspection report 


Submitting an inspection and writing assignment

Submitting a research and writing assignment 0.5




Studying and reviewing instructional material in preparation for taking quizzes and exam 


Reading the downloaded student course book including taking the quizzes with the book 2.5
Reading, research, and studying related to completing the research and writing assignment 1.0
Studying and preparing for inspection processes according to a Standards of Practice, including capturing and storing digital images with a camera or device, making observations, evaluating conditions, deducing, formulating opinions, communicating observations in written form, attaining competency in performing inspections and using an inspection checklist or software and other inspection tools in producing a report. 10.0



Sub Total


Overall Total

26 hours

2.6 CEU

And, in keeping with InterNACHI's commitment to Continuing Education, this online course is open and free to all members, and can be taken again and again, without limit.
Reminder to members:  InterNACHI's Code of Ethics 1.10 requires that you comply with all government rules and licensing requirements of the jurisdiction where you conduct business.  InterNACHI's courses and Standards generally exceed the Standards of Practice that you are required to abide by locally.