Inspection Training

How to Inspect the Water Heater Description

While the inspector is at the water heater they need to accurately describe the size and the manufacturer of the water heater please review the entire procedure below.



International Standards of Practice for Performing a General Home Inspection


3.6. Plumbing


I. The inspector shall inspect:

C. The water heating equipment, including the energy source, venting connections, temperature/pressure-relief (TPR) valves, Watts 210 valves, and seismic bracing.


II. The inspector shall describe:
E. The capacity of the water heating equipment, if labeled.


III. The inspector shall report as in need of correction:



IV. The inspector is not required to:

A. Light or ignite pilot flames.
B. Measure the capacity, temperature, age, life expectancy or adequacy of the water heater.
C. Inspect the interior of flues or chimneys, combustion air systems, water softener or filtering systems, well pumps or tanks, safety or shut-off valves, floor drains, lawn sprinkler systems, or fire sprinkler systems.
H. Operate any valve.
Q. Evaluate wait time to obtain hot water at fixtures, or perform testing of any kind to water heater elements.
R. Evaluate or determine the adequacy of combustion air.
S. Test, operate, open or close: safety controls, manual stop valves, temperature/pressure relief valves, control valves, or check valves.

V. Inspect or test for gas or fuel leaks, or indications thereof.


Axium SOP Differences

Axium Requires: Same as NACHI Standards of Practice.


Tools Needed

No tools required to inspect the Water Heater Description.



  • While the inspector is observing the water heater they will check for the type of water heater, how many water heaters are present, the size/capacity of the water heater, and who the manufactured the water heater. There is one picture for this section and it should show the name of the company that manufactured the water heater.


Common Defects

  • No defects for this section.


Common Mistakes

  • Not checking the size/capacity and putting the wrong amount in report.
  • Not taking a clear picture of the water heater to show the manufacturer label.


Report / Software


  • Gas/Electric: The property is equipped with [word 1] [word 2] gas water heater(s). The water heater(s) was manufactured by [word 3]. Gas water heaters heat water using a gas burner located in a chamber beneath the water tank. The gas control mechanism contains safety features designed to prevent gas from leaking into the living space if the burner should fail for some reason. Gas-fired water heaters must be properly installed so that the gas fuel is safely delivered to the water heater and so that the water heater safely exhausts the products of combustion to the property exterior. The life span of water heaters depends upon the following:
    • The quality of the water heater
    • The chemical composition of the water
    • The long-term water temperature settings
    • The quality and frequency of past and future maintenance.
  • Flushing the water heater tank once a year and replacing the anode every four years will help extend its lifespan. You should keep the water temperature set at a minimum of 125 degrees Fahrenheit to kill microbes and a maximum of 130 degrees to prevent scalding.
    • Number:
      • 1
      • 2
      • 3
      • 4
      • a
    • Size
      • 100
      • 30
      • 38
      • 40
      • 48
      • 50
      • 70
      • 74
      • 75
      • Tankless
      • Unknown
    • Manufacturer:
      • Multiple
  • The property was equipped with [word 1] tankless gas water heater(s). The water heater(s) was manufactured by [word 2].


  • The manufacturer and capacity of the water heater could not be determined at the time of the inspection. The water heater [word 1].
    • Insulated
    • No Label


  • N/A


  • N/A