Tankless or on-demand water heaters have gained immense popularity in recent years, owing to their ability to provide hot water as needed, without requiring any storage tanks. Compared to traditional water heaters, tankless models do not produce standby energy losses, resulting in significant cost savings over time. Therefore, the next time you plan to remodel your bathroom, consider switching to an on-demand water heater to save on electricity or gas bills and to proactively conserve water.

However, it is essential to note that like any other appliance, tankless water heaters require regular maintenance to ensure optimal performance. In this article, we will discuss the benefits of tankless water heaters, offer tips for their maintenance, and suggest when to contact professional plumbing contractors.

Benefits of Tankless Water Heaters

Tankless water heaters provide several benefits over traditional water heaters, including:

  1. Energy Efficiency: Tankless water heaters are highly efficient, as they only heat water when needed. This results in significant energy savings, as standby energy losses are eliminated.
  2. Space-saving: As tankless water heaters do not require storage tanks, they take up significantly less space than traditional water heaters. This makes them an ideal choice for small homes or apartments.
  3. Longevity: Tankless water heaters have a longer lifespan than traditional water heaters, often lasting up to 20 years. Additionally, many manufacturers offer extended warranties on their tankless models, providing additional peace of mind.
  4. Endless Hot Water: Unlike traditional water heaters, tankless models provide an endless supply of hot water, making them ideal for large families or households with high water usage.

Tips for Maintaining Tankless Water Heaters

While tankless water heaters require less maintenance than traditional water heaters, they still require regular upkeep to ensure optimal performance. Here are some tips for maintaining your tankless water heater:

  1. Flush the system annually: To prevent sediment buildup, it is recommended to flush your tankless water heater with white vinegar once a year. This will remove any mineral buildup and help maintain the system’s efficiency.
  2. Inspect the unit regularly: Check your tankless water heater regularly for any signs of wear and tear, such as rust or corrosion. If you notice any issues, contact a professional plumber immediately to avoid more extensive repairs.
  3. Check the pressure relief valve: It is essential to check the pressure relief valve on your tankless water heater regularly to ensure it is functioning correctly. A faulty pressure relief valve can lead to dangerous levels of pressure buildup, which can cause the system to fail.
  4. Consult the manufacturer’s instructions: Always refer to the manufacturer’s instructions when performing maintenance on your tankless water heater. These instructions will provide specific guidelines on how to properly care for your unit.

When to Contact Professional Plumbing Contractors

While some maintenance tasks can be performed by homeowners, it is crucial to contact professional plumbing contractors for more extensive repairs or installations. Here are some signs that indicate it is time to call in the experts:

  1. Strange noises: If you notice any unusual noises coming from your tankless water heater, such as banging or clanging sounds, it may be a sign of a mechanical issue that requires professional attention.
  2. Water leaks: Water leaks are a significant indication that your tankless water heater is experiencing issues. If you notice any water pooling around the unit or dripping from pipes, contact a professional plumber immediately.
  3. Inconsistent hot water: If you are experiencing inconsistent hot water supply or reduced water pressure, it may be a sign of a clogged or malfunctioning tankless water heater. A professional plumber can diagnose and repair the issue quickly.


In conclusion, tankless water heaters are an excellent choice for homeowners looking to save on energy bills and proactively conserve water. These units are more efficient than traditional storage tank water heaters, as they only heat water when it is needed, rather than keeping a large tank of water constantly heated.

In addition to their energy-saving benefits, tankless water heaters also take up less space and have a longer lifespan than traditional water heaters. They also provide an endless supply of hot water, so you never have to worry about running out during a shower or bath.

However, it is important to note that tankless water heaters do require regular maintenance to ensure proper performance. As mentioned earlier, flushing the unit with vinegar once a year can help prevent mineral buildup and extend the life of the heater. It is also important to have a professional plumber inspect the unit annually to identify any potential issues and make any necessary repairs.

If you are considering switching to a tankless water heater, it is important to consult with a professional plumber to determine the best size and type for your home. Factors such as the size of your household and hot water usage patterns will impact the size and capacity of the unit needed.

Finally, it is important to remember that while tankless water heaters can save money in the long run, they do have a higher upfront cost compared to traditional water heaters. Homeowners should weigh the initial cost against the long-term savings when making their decision.

Overall, tankless water heaters are a great option for homeowners looking to reduce their energy usage and conserve water. By properly maintaining these units and working with a professional plumber, homeowners can enjoy the many benefits of tankless water heaters for years to come.


  1. What are tankless water heaters? Tankless water heaters, also known as on-demand water heaters, heat water as it flows through the unit rather than storing it in a tank.
  2. What are the benefits of tankless water heaters? Tankless water heaters offer several benefits, including energy efficiency, cost savings, endless hot water, durability, and environmental sustainability.
  3. How long do tankless water heaters last? With proper maintenance, tankless water heaters can last up to 20 years.
  4. How do you maintain a tankless water heater? Maintenance for a tankless water heater includes flushing the system, cleaning the filter, checking the venting system, inspecting the unit, and hiring a professional plumber.
  5. What is the cost of a tankless water heater? Tankless water heaters can have a higher upfront cost than traditional water heaters, but they can save money in the long run due to their energy efficiency.
  6. Are tankless water heaters more energy-efficient than traditional water heaters? Yes, tankless water heaters are up to 34% more energy-efficient than traditional water heaters, according to the U.S. Department of Energy.
  7. Can tankless water heaters provide enough hot water for a household? Yes, tankless water heaters can provide a continuous supply of hot water, even during peak usage times.
  8. How do you install a tankless water heater? Tankless water heaters should be installed by a professional plumber due to their complexity and technical requirements.
  9. What is the lifespan of a traditional water heater? Traditional water heaters typically last between 10-15 years.
  10. Can a tankless water heater be installed in any home? Yes, tankless water heaters can be installed in any home, but it is important to consider the size and hot water usage requirements of the household when selecting a unit.
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