What Maintenance Does a Water Heater Need?
Water-heater maintenance depends on the equipment and the water. A storage tank may need flushing, anode inspection, and temperature-and-pressure relief-valve checks. A tankless unit may need inlet-filter cleaning, condensate care, and descaling when the model and water quality call for it. A.J. LeBlanc Heating's licensed plumbers inspect the equipment, follow the manufacturer instructions, and recommend the work that fits the system.
Follow the manufacturer maintenance instructions for the selected water heater.
1. Tank flushing for storage units
Sediment from the water supply can settle at the bottom of a storage tank, reduce heat transfer, contribute to noise, and affect operation. Start with the maintenance schedule in the model's manual. Sediment, hardness, softened water, operating temperature, and hot-water use can make inspection or cleaning necessary sooner.
2. Anode-rod inspection for storage tanks
The anode rod is a sacrificial component that helps protect the steel tank from corrosion. Start with the maintenance schedule in the model's manual. Sediment, hardness, softened water, operating temperature, and hot-water use can make inspection necessary sooner. An anode should be inspected and replaced based on its condition rather than changed on one universal three-to-five-year schedule.
Appropriate maintenance can reduce scale, catch corrosion, and help the equipment operate as intended. No service schedule can guarantee or double the life of every water heater. The result depends on the equipment, installation, water, use, and condition when maintenance begins.
3. Temperature-and-pressure relief-valve checks
The T&P valve is a safety device. Follow the manufacturer's test procedure and make sure the discharge piping terminates safely before operating it. If the valve will not reseat or continues to discharge, shut off the equipment as directed and call a plumber.
4. Tankless maintenance
Tankless maintenance varies by model and water quality. It may include cleaning inlet screens, inspecting venting and condensate components, and flushing the heat exchanger when scale warrants it. Use the manufacturer's procedure and approved solution for the specific unit.
What homeowners can do between visits
Walk around the unit quarterly and look for moisture, rust, or scale at the base, fittings, or relief valve. Keep the temperature set to 120°F for most NH homes (this balances scald risk against bacteria suppression), and on gas units keep the surrounding area clear of stored items for combustion airflow.
Some systems store water hotter and use a thermostatic mixing valve to reduce the delivered temperature. Follow the equipment instructions and have a licensed plumber evaluate the setup before changing it.
Call for service if you notice rusty or discolored hot water, a rotten egg smell (especially on well water), popping or rumbling during heating cycles, reduced hot water capacity, or longer recovery times. A tank past 10 years old is also worth a professional look.
Schedule water heater service
For anode rod replacement, tank flushing, T&P valve service, tankless descaling, or a no-pressure conversation about replacement options, contact A.J. LeBlanc Heating or call 603-623-0412. Serving New Hampshire families since 1928.
Frequently Asked Questions
How often should I have my water heater serviced?
Start with the maintenance schedule in the model's manual. Sediment, hardness, softened water, operating temperature, and hot-water use can make inspection or cleaning necessary sooner. We inspect the equipment and recommend the work that fits the system.
Can I service my water heater myself?
Some tasks (visual leak inspection, T&P valve test) yes. Tank flushing is possible but involves draining the tank under pressure and handling very hot water. Anode rod replacement and tankless descaling are usually best left to a licensed plumber.
How long should a water heater last in NH?
Useful life varies by equipment, installation, water quality, operating conditions, and maintenance history. Appropriate maintenance can reduce scale, catch corrosion, and help the equipment operate as intended, but it cannot guarantee a fixed lifespan.
Why does maintenance matter so much for water heaters?
Appropriate maintenance can reduce scale, catch corrosion, and help the equipment operate as intended. No service schedule can guarantee or double the life of every water heater. The result depends on the equipment, installation, water, use, and condition when maintenance begins.
What temperature should I set my water heater to?
120°F for most NH homes. Lower increases bacterial growth risk in the tank. Higher increases scald risk and accelerates anode rod consumption.