The Lifespan of a Water Heater: When to Replace and What to Consider

Learn about the factors that affect the lifespan of a water heater and when it may be time for a replacement. Find out what type of water heater is best for your household's needs and how proper maintenance can extend its lifespan.

The Lifespan of a Water Heater: When to Replace and What to Consider

As an expert in the field of water heaters, I am often asked the question: should I replace my 15 year old water heater? The answer is not a simple yes or no, as there are many factors to consider when it comes to the lifespan and efficiency of your water heater. With proper maintenance, a traditional tank water heater can last anywhere from six to 12 years, while a tankless water heater can last more than 20 years. However, there are other factors that can affect the lifespan of your water heater, such as the type of water heater, usage, and maintenance. Traditional tank water heaters work by storing and heating a large amount of water in a tank. As hot water is used, the tank is automatically refilled with cold water and the heating process starts again.

This constant cycle can put strain on the tank and its components, leading to wear and tear over time. On the other hand, tankless water heaters heat water on demand, eliminating the need for a storage tank. This can result in a longer lifespan for tankless models. Another important factor to consider is usage. Smaller tankless water heaters may not be able to keep up with the demands of a large household, resulting in lukewarm or inconsistent hot water.

This can put additional strain on the unit and potentially shorten its lifespan. It's important to choose a water heater that is appropriate for your household's needs. Maintenance also plays a crucial role in the lifespan of your water heater. The buildup of sediment and mineral deposits inside the tank can cause corrosion and decrease efficiency. This is why it's important to have your water heater regularly cleaned and flushed by a professional.

Additionally, some models may require specific maintenance tasks such as replacing the anode rod, which helps prevent corrosion. When it comes to the type of water heater, there are pros and cons to both gas and electric models. Gas water heaters tend to be more efficient and can provide a higher volume of hot water, making them a good choice for larger households. However, they do require proper ventilation and can produce carbon monoxide, making them less ideal for some households. On the other hand, electric water heaters are generally easier to install and maintain, but may not be as efficient or provide as much hot water as gas models. If you do decide to replace your water heater, it's important to properly dispose of the old unit.

The Home Depot offers online ordering and delivery for new water heaters, making the process more convenient. It's also recommended to have a professional install your new water heater to ensure it is done correctly and safely. In conclusion, while a 15 year old water heater may still be functioning, it's important to consider its age, usage, and maintenance when deciding whether or not to replace it. If your water heater is showing signs of wear and tear or is no longer meeting your household's needs, it may be time for a replacement. Remember to choose a model that is appropriate for your household's usage and have it regularly maintained by a professional to ensure a longer lifespan.

Randy Strombach
Randy Strombach

Plumbing Contractor, father to three great kids and husband to an amazing wife