Emergency sewer & plumbing response Finding your nearest service area… · Service areaCall 818-538-4958
New Flow Plumbing · Local resource

How to Check Your Water Heater Before Calling a Plumber

Practical plumbing information, professional guidance, and a clear next step for homeowners and businesses across the San Fernando Valley and Los Angeles County.

New Flow Plumbing professional resource image for How to Check Your Water Heater Before Calling a Plumber
Clear information backed by professional field experience.
DIY inspection · about 10 minutes

A safer way to work through the first checks.

Complete a visual, safety-first check before deciding whether a water-heater technician should inspect the system.

DifficultyEasy visual check
PrepareFlashlight, phone camera, paper towel, and the equipment manual if available.
Stop and callLeaks, sewage, gas, electrical risk, or anything you cannot safely reach.
Related New Flow Plumbing guide image for How to Check Your Water Heater Before Calling a Plumber
Use the visual checks as a guide, then follow the manufacturer instructions for your equipment.
Step-by-step walkthrough

Work through each step before moving to the next.

Take a photo or note what you find. If a step does not match your property or the symptom gets worse, stop and call for professional guidance.

Identify the heater and clear the area
Step 1

Identify the heater and clear the area

Note whether the unit is gas or electric and keep storage, paper, and cleaners away from the equipment. Make sure the access path is safe and dry.

Check before continuing: Keep the area dry, controlled, and easy to observe.

Look for water, rust, and corrosion
Step 2

Look for water, rust, and corrosion

Check the top connections, relief-valve discharge pipe, drain valve, and floor around the tank. A damp paper towel can help confirm a slow drip without touching hot components.

Check before continuing: Keep the area dry, controlled, and easy to observe.

Notice sound, temperature, and performance
Step 3

Notice sound, temperature, and performance

Record when unusual popping, humming, or running sounds occur. Note lukewarm water, long recovery, discolored water, or a temperature change at fixtures.

Check before continuing: Keep the area dry, controlled, and easy to observe.

Document the symptoms for service
Step 4

Document the symptoms for service

Take a photo of the model label and affected connection from a safe distance. Share what changed, when it started, and whether any other fixture is affected.

Check before continuing: Keep the area dry, controlled, and easy to observe.

Know your next step

When the simple check is not enough.

Share the photos, symptoms, and steps you already tried. New Flow Plumbing can help confirm the cause and recommend the appropriate repair path for your home or property.

Call a sewer specialist · 818-538-4958