Complete Water Heater Maintenance Guide for 2025
Proper water heater maintenance can extend its lifespan by years and save you hundreds on energy bills. Learn the essential maintenance tasks every homeowner should know.
Why Water Heater Maintenance Matters
Your water heater is one of the hardest-working appliances in your home, operating 24/7 to provide hot water for showers, dishes, laundry, and more. Regular maintenance ensures it runs efficiently, lasts longer, and doesn't fail when you need it most.
Benefits of Regular Maintenance
- Extends lifespan by 3-5 years
- Reduces energy bills by up to 20%
- Prevents costly emergency repairs
- Maintains consistent hot water supply
- Keeps warranty valid
Annual Maintenance Tasks
1. Flush the Tank
Sediment buildup at the bottom of your tank reduces efficiency and can cause premature failure. Flushing removes this sediment and should be done annually.
How to Flush Your Water Heater:
- Turn off power (electric) or set to pilot (gas)
- Turn off cold water supply valve
- Connect garden hose to drain valve
- Open drain valve and let water flow until clear
- Close drain valve and refill tank
- Turn power back on
2. Test the Temperature-Pressure Relief Valve
The TPR valve is a critical safety device that releases pressure if it gets too high. Test it annually by lifting the lever and letting it snap back. Water should flow out and stop when released. If it doesn't work properly, replace it immediately.
3. Check the Anode Rod
The anode rod attracts corrosive elements in water, protecting your tank from rust. Check it every 2-3 years and replace when it's less than 1/2 inch thick or heavily corroded. This simple part can add years to your water heater's life.
4. Inspect for Leaks
Check around the base of the tank, all connections, and the TPR valve for any signs of moisture or leaks. Even small leaks can indicate bigger problems and should be addressed immediately.
5. Adjust Temperature Setting
The ideal water heater temperature is 120°F. This prevents scalding, reduces energy costs, and slows mineral buildup. Check your thermostat setting and adjust if needed.
Monthly Maintenance Tasks
Test the TPR Valve
Quickly lift and release the TPR valve lever once a month to ensure it's working properly. This keeps the valve from sticking and ensures it will work in an emergency.
Check for Unusual Sounds
Listen for popping, rumbling, or banging sounds which indicate sediment buildup. If you hear these noises, it's time to flush the tank.
Tankless Water Heater Maintenance
Tankless water heaters require different maintenance than traditional tank models:
- Descale annually: Flush with vinegar or descaling solution to remove mineral buildup
- Clean air filter: Remove and clean the air intake filter every few months
- Check venting: Ensure exhaust vents are clear and properly sealed
- Inspect connections: Check all water and gas connections for leaks
Signs You Need Professional Service
- Rusty or discolored water
- Inconsistent water temperature
- Strange noises (popping, banging, hissing)
- Visible leaks or moisture around tank
- Reduced hot water supply
- Water heater is over 10 years old
Professional Maintenance Services
While some maintenance tasks can be DIY, having a professional plumber inspect your water heater annually ensures nothing is missed. Our comprehensive maintenance service includes:
- Complete system inspection
- Tank flushing and sediment removal
- Anode rod inspection and replacement
- TPR valve testing
- Thermostat calibration
- Leak detection
- Energy efficiency recommendations
Schedule Your Water Heater Maintenance
Keep your water heater running efficiently with our professional maintenance service.
Brian Ware
Master Plumber & Owner, Da'Waterboyz
15+ years experience serving Denver Metro