The Link Between Water Heater Age And Energy Efficiency

Many homeowners tend to overlook the age of their water heaters and how it affects their energy efficiency. Water heaters are one of the most used appliances in any household, and as they age, they can significantly affect energy consumption and cost. This article takes a deep dive into the link between water heater age and energy efficiency, helping homeowners understand how to be more energy-efficient.

How Age Affects Energy Efficiency

Older water heaters tend to lose their energy efficiency as they age. The reason for this is that they become less efficient in heating water and keeping it hot. The older the water heater, the less efficient it becomes at converting energy to heat.

Moreover, as water heaters age, they are also more prone to leaks and rust accumulation. The buildup of rust lowers the efficiency of the heating process, requiring more energy to produce the same amount of hot water. The water heater then becomes even less efficient, and it is only a matter of time before they start consuming more energy and increase energy bills.

Typical Lifespan Of A Water Heater

Knowing the average lifespan of a water heater is essential in understanding how to manage energy efficiency. Most water heaters last between ten to fifteen years, depending on the quality and maintenance. However, some water heaters may last less or more than the stated range. Therefore, homeowners need to keep track of their water heaters’ age.

Importance Of Maintenance

Like any other appliance, the maintenance of water heaters is critical to maintaining energy efficiency. Regular maintenance and inspection of water heaters can help homeowners identify faults. If identified early enough, the faults can be repaired or the entire water heater replaced before energy bills skyrocket.

Maintenance of water heaters includes flushing, cleaning, and anode rod replacement. When the sediments in the water heater tank accumulate significantly, they affect energy efficiency, and a professional plumber will help remove these sediments by flushing the tank. The Anode rod is meant to prevent rust accumulation and when it degrades, it needs replacement.

How To Improve Energy Efficiency

Improving water heater energy efficiency is an essential step to reducing energy bills. Here are some ways to achieve this:


Proper insulation of water heaters is a sure way of improving energy efficiency. Insulation helps to reduce heat loss, making sure that the water in the tank stays hot. Insulation can be done around the water heater and the connecting pipes.

Temperature Control

Most water heaters come with temperature control settings, and homeowners can adjust the setting to improve energy efficiency. Reducing the temperature setting by a few degrees can significantly reduce energy consumption. It is important to note, however, that too low a setting can be hazardous, so it’s best for homeowners to set it just right.


Upgrading to a newer energy-efficient water heater is an excellent way of improving energy efficiency. Newer water heaters are specially designed to be energy efficient, and they consume less energy while still producing hot water. Manufacturers come up with water heaters that use less energy, run on renewable energy sources, and come with energy-saving features. Upgrading to a newer water heater will not only improve energy efficiency but also reduce energy bills.


Water heater age is a significant determinant of energy efficiency. As water heaters age, they tend to consume more energy and increase energy bills. Homeowners must keep track of their water heaters’ age, maintain them regularly, and improve energy efficiency by insulating, reducing temperature, and upgrading to newer energy-efficient models. Being diligent in energy management can significantly reduce household energy bills in the long run.

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