The Pros and Cons of Tankless Water Heaters

Tankless water heaters, also known as instantaneous or demand-type water heaters, provide hot water on demand, making them more energy-efficient than traditional-style storage tank water heaters. Here are some pros and cons of tankless water heaters:

Energy Efficiency: Tankless water heaters are more energy-efficient than storage tank water heaters. According to the U.S. Department of Energy, tankless water heaters can be 24% to 34% more energy-efficient than storage tank water heaters, especially if you use around 41 gallons of hot water per day. Even if you double that amount, tankless water heaters are still 8% to 14% more efficient. Installing tankless water heaters at multiple locations can result in even greater energy savings, up to 50% .

Longer Lifespan: Tankless water heaters tend to last longer than conventional water storage heaters. While traditional water heaters typically last around 10 to 15 years, tankless water heaters can last for upwards of 20 years .

Space-Saving: Tankless water heaters are compact and take up less space compared to traditional storage tank water heaters. This can be beneficial, especially in homes with limited space.

Endless Hot Water: Tankless water heaters provide a continuous supply of hot water as long as you need it. Unlike storage tank water heaters, there is no limit to the amount of hot water, so you don’t need to worry about running out midway through a shower .

Higher Upfront Costs: The upfront costs of tankless water heaters can be higher compared to traditional storage tank water heaters. However, the long-term energy savings can offset the initial investment .

Inconsistent Water Temperatures: Tankless water heaters may experience inconsistent water temperatures, especially with heavy usage. This can be a drawback for those who prefer a consistent and steady supply of hot water .

Installation Complexity: Installing a tankless water heater can be more complex compared to replacing a traditional water heater. It is not recommended for a DIYer to attempt the installation due to the complexity of the project and the professional know-how required to ensure proper functioning. Most plumbing companies can remove an old tank-style water heater and install a new tankless water heater, but the cost of this service varies depending on factors such as size, type, and fuel used by the water heater .

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