Water Heaters

Course Description (about the program)

A large majority of homes in the US have a storage-type water heater that provides domestic hot water. These water heaters can be electric or gas-fired and require regular maintenance and servicing. This module covers the installation, maintenance, and service of residential and light commercial gas and electric storage water heaters.


HVACR and plumbing educational programs located in high schools, community colleges, trade schools, or apprenticeship programs will find this training can easily be integrated into your program or can be used as a stand-alone course.

HVACR wholesalers, manufacturers, and continuing education providers will find this program is excellent to reinforce concepts in a 6-8-hour training program.

Course Objectives

  • Recognize safety-related issues when working on gas or electric water heaters.
  • Describe the most common water heater ratings and sizes.
  • Describe how to calculate a water heater’s first hour rating.
  • Identify and discuss components common to both electric and gas water heaters.
  • Describe the typical operation of gas water heaters and the gas-related components.
  • Describe the typical operation of electric water heaters.
  • Explain typical routine maintenance procedures for gas and electric water heaters.
  • Discuss troubleshooting common faults for both gas and electric water heaters.

Training Manual © 2020 ESCO 35 Pages

Water Heaters was written by HVACR instructors for HVACR instructors to provide sound, relevant information in a single source.

The manual provides students and practicing technicians with the information and knowledge necessary to understand typical operation of both gas and electric water heaters. It is full of color illustrations and includes end of lesson review questions that provide students and practicing technicians with the information and knowledge necessary to accurately and safely install, service, and maintain storage-type water heaters.

Main topics include: safety and hazard awareness, sizing, components and controls, installation, maintenance and troubleshooting. The end of the booklet contains fill-in-the-blank worksheets that review the content of the entire manual.

See a sample of this book here .

Registered proctors can review a digital version of the manual, by logging in and visiting the resource center.

Instructor Resource Materials

The instructor resource materials include a 142-slide PowerPoint that correlates directly with the training manual. Each slide within the presentation contains speaker notes that are designed to aid the instructor through the presentation and provide additional talking points. Student worksheets and answers are also included.

Instructor resource materials are available through digital download or CD.


The Water Heater Certification covers: safety, sizing, components, theory, typical operation and installation, meter usage, servicing and troubleshooting, and routine maintenance.


Proctors can log in to review candidate test results and access detailed statistical reports. These reports help instructors pinpoint strengths and weaknesses in their instruction. Additionally, these reports aid the program in documentation for Perkins compliance.

Bundle and Save

The training manual, instructor resources and certifications are available as a complete comprehensive program or sold separately. Registered proctors can login to view their educational discounts or call 800 726-9696 or additional information.

Areas of Competency Covered

View the HVAC Excellence Competency and Task List .