Water Heater Repair or Replacement?
The decision depends on the age of the unit, how often it needs repairs, and whether the tank is leaking. If your water heater is under eight years old and has minor issues like inconsistent water temperature or small leaks, repair is usually best. If it’s over ten years old, leaking from the tank, or needs frequent repairs, replacement is typically more cost-effective.
Common repairable issues include a faulty heating element or thermostat, sediment buildup causing rumbling noises, rusty or smelly water from a failed anode rod, or small leaks around fittings. These repairs are relatively affordable and can restore normal performance when handled by a licensed plumber.
Replacement is recommended if the water heater is over ten years old, has a leaking tank, or requires multiple service calls within a short period. Rising energy bills and running out of hot water quickly are also strong indicators that a new system would be more efficient and reliable.
Traditional tank water heaters store a set amount of hot water and are more affordable upfront, while tankless water heaters heat water on demand, saving space and energy. Tankless models cost more initially but can last 20+ years and provide endless hot water, making them ideal for growing families or energy-conscious homeowners.
A standard tank water heater generally lasts between 8 and 12 years with proper maintenance. A tankless water heater can last 20 years or more, especially when professionally installed and maintained.
Plumbers should inspect the full system, explain repair vs. replacement costs, review efficiency and warranty differences, and recommend properly sized models. Offering transparent advice without pressure builds trust and customer loyalty.
First Supply offers a full selection of A.O. Smith water heaters—both tank and tankless—along with installation tools, OEM repair parts, and expert technical support. Plumbers can rely on First Supply for quality products, reliable inventory, and knowledgeable assistance to help customers make confident decisions.
Warning signs of a failing water heater include inconsistent water temperature, rumbling or popping noises, cloudy or rusty water, reduced hot water supply, or visible leaks near the base of the tank. If you notice any of these symptoms—especially on an older unit—it’s best to schedule a professional inspection before a complete failure occurs.
If the leak comes from fittings, valves, or connections, a plumber can often repair it. However, if the tank itself is leaking, the internal lining has failed, and the unit must be replaced. Tank leaks cannot be safely repaired and will only worsen over time.
Regular maintenance is key. Flushing the tank annually to remove sediment buildup, replacing the anode rod every few years, checking the pressure relief valve, and ensuring proper water pressure all help extend the lifespan and efficiency of a water heater. A licensed plumber can provide these services as part of a maintenance plan.
Yes. Tankless water heaters only heat water on demand, eliminating the standby heat loss that occurs in traditional tanks. This design makes them up to 30% more energy-efficient, lowering long-term utility costs and reducing environmental impact. Though the initial cost is higher, energy savings and extended lifespan make them a smart investment.