How to Inspect Water Heater Tanks Course

Welcome to InterNACHI's free, online How to Inspect Water Heater Tanks video course.
Take the free, online course now.
The goal of this course is to teach home inspectors how to inspect residential water heater tanks, including fuel and electric water heater tanks.
Upon successful completion of this course, the inspector will be able to:
  • identify components of gas-fired and electric water heater tanks;
  • recognize and describe defects and safety hazards in relation to modern standards and requirements;
  • communicate how a flammable vapor ignition resistance system (FVIR) works;
  • understand the importance of temperature-and-pressure relief valves; and
  • check hazards of confined spaces with fuel-fired water heater tanks.
The course includes:
  • 2 hours of online video;
  • 6,000 words;
  • student textbook; 
  • online writing essay assignment;
  • inspection report writing assignment;
  • required additional reading;
  • 60-question final exam (drawn from a larger pool of questions)
  • instant grading
  • printable Certificate of Completion
  • accreditations and state approvals

How to Inspect Water Heater Tanks Course

Course # 3504



Estimated hours for the average student

Academic Engagement

Reading and studying online course instructional material at 140 words per minute.
Watching, listening, and studying instructional video.


Taking exam


Performing a self-guided assigned research exercise


Submitting an academic written essay assignment and applicable digital image and contributing to an academic online discussion





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


Homework of reading, studying, and note-taking from the downloaded student study guidebook at 140 words per minute

Homework of preparing to perform an the assigned inspection activity, taking inspection images, developing observations and opinions, and writing assigned essays




Sub Total


Overall Total


In keeping with InterNACHI's commitment to Continuing Education, this 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. 
This course has been approved by:
This How to Inspect Water Heater Tanks course covers the following topics:
  • Introduction
  • Kenton Shepard and Paige Peters
  • Components of a water heater tank
  • Water heater as a space heater
  • Sacrificial rod
  • Drain valve
  • Access
  • Labeling
  • Pressurized expansion tanks
  • Tankless water heaters
  • Tankless temperature control
  • Tankless size
  • Tankless coils in boilers
  • Indirect water heaters
  • Water heater tank locations
  • Located in storage closets, bedrooms and bathrooms
  • Located in garages
  • Located in attics
  • Confined space and combustion air
  • Seismic supports for tanks
  • Water valves for water heater tanks
  • Inspecting the valve
  • Dip tube hole
  • Fuel shutoff valves or electric disconnects
  • TPR valves
  • Location of TPR valves on water heater tanks
  • Relief valve importance
  • Expansion tank on a boiler
  • Discharge pipe on TPR valve
  • Water leak catch pan
  • Defects at a water heater tank
  • Hot water
  • FVIR
  • Bradford White
  • Maintenance recommendations
  • Suggested inspection report narratives
  • Conclusion
Upon completion of this course and passing of the 20-question final exam (drawn from a larger pool), the student can download and print their own Certificate of Completion which is auto-generated in their own name.
The student's (InterNACHI member's) information is recorded on InterNACHI's servers for membership compliance verification, and automatically logs completion into InterNACHI's online Continuing Education log.
Non-members may view only the first page of the course.
Members will need their username and password.  If you have forgotten your password, CLICK HERE (instant response) or email and request it (don't forget your name). 
InterNACHI... #1 in inspection education.
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Some features which make InterNACHI's courses superior to existing continuing education options:
  • The course is free for all InterNACHI members.
  • The course is written in pure XHTML code for quick loading.  The course loads fine on old computers and loads fast, even with dial-up.
  • The course is designed using a hierarchal menu coupled with a sequential page navigation.  This provides the student with the option to easily repeat areas of weakness.
  • The course permits the student to start, stop and restart any part of the course as often as desired.
  • There are a variety of images within the course, including diagrams, illustrations and photos. 
  • The illustrations can be enlarged for clearer viewing by clicking on them.
  • The text is integrated into InterNACHI's Inspector Glossary.  Rolling over blue-colored terms provides their definition.
  • The final exam uses multiple-choice questions that reference the images. 
  • The course's quizzes and final exam have numerous advantages over traditional exam systems:
    1. The course, quizzes and final exam incorporate built-in intelligence which identifies and strengthens each student's unique subject weaknesses.
    2. Not only is each question weighted with regard to score, but each answer is weighted, as well as the correctness of each answer being weighted.
      1. Answers to easy questions are weighted such that the student is penalized, in terms of score, for answering incorrectly, but rewarded modestly for answering correctly.
      2. Answers to difficult questions are weighted such that the student is rewarded, in terms of score, for answering correctly, but not penalized for answering incorrectly.
      3. Answers to questions regarding basic safety, or questions every inspector should know the answer to, are weighted such that the student is severely penalized, in terms of score, for answering incorrectly.
  • Upon passing the final exam, the student can print out a Certificate of Completion which is auto-generated in their own name.
The student's (InterNACHI member's) information is recorded on InterNACHI's servers for membership compliance verification, and automatically logs completion into InterNACHI's online Continuing Education log.

Why online inspector education is better than classroom inspector education.
Other approved and accredited inspection courses.