Water Heater Maintenance for Home: Essential Tips for 2025

Is your water heater making strange noises, taking longer to heat, or showing signs of rust? Neglecting maintenance can lead to costly repairs, higher energy bills, and even premature replacement. The right water heater maintenance can extend its lifespan, improve efficiency, and prevent unexpected breakdowns. In this guide, we’ll cover the top maintenance tasks every homeowner should know, including flushing sediment, checking the anode rod, and testing safety valves. For specialized cleaning solutions, check out our guide on the best steam mop cleaning solutions to keep your utility area spotless.

Key Takeaways

  • Flush your water heater annually to remove sediment buildup.
  • Inspect the anode rod every 2-3 years to prevent corrosion.
  • Test the pressure relief valve every six months for safety.
  • Adjust the thermostat to 120°F for optimal efficiency.
A technician inspecting a home water heater in a cozy basement.

1. Flush the Tank to Remove Sediment

Sediment buildup reduces efficiency and can damage your water heater. Follow these steps:

  • Turn off power/gas and let water cool for safety.
  • Connect a garden hose to the drain valve and direct it to a floor drain.
  • Open the valve and let water flow until it runs clear (20-30 minutes).

For electric heaters, also shut off the breaker. For gas units, set the thermostat to “Pilot.” Pro tip: Pair this task with deep floor cleaning for a thorough utility room refresh.

A close-up of an anode rod being inspected next to a water heater.

2. Check and Replace the Anode Rod

The anode rod attracts corrosive elements to protect your tank. Inspect it every 2-3 years:

  • Use a 1-1/16″ socket wrench to remove it from the tank top.
  • Replace if more than 50% corroded (cost: $20-$50).
  • Consider aluminum/zinc rods for smelly water or magnesium for better protection.
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3. Test the Temperature & Pressure Relief Valve

This critical safety device prevents explosions. Test it every 6 months:

  • Place a bucket under the discharge pipe.
  • Lift the valve lever for 5 seconds—hot water should flow freely.
  • If water leaks or doesn’t stop, replace the valve immediately.

4. Inspect for Leaks and Corrosion

Monthly visual checks can catch early warning signs:

  • Check connections, valves, and the tank base for moisture.
  • Look for rust streaks or mineral deposits.
  • Small leaks may only need tightening; persistent leaks require professional help.

5. Adjust the Thermostat

The ideal setting is 120°F—hot enough for needs but efficient. To adjust:

  • Electric: Turn off power, remove access panels, adjust with a screwdriver.
  • Gas: Use the dial near the bottom control panel.

Water Heater Maintenance Schedule

Task Frequency Difficulty
Flush tank Annually Moderate
Check anode rod Every 2-3 years Moderate
Test T&P valve Every 6 months Easy
Inspect for leaks Monthly Easy

Final Thoughts

Regular water heater maintenance saves money and prevents emergencies. Bookmark this guide and set calendar reminders for key tasks. For more home care tips, explore our hardwood floor cleaning solutions or consult a licensed plumber for complex issues.