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Best Tankless Water Heaters

Oct 25, 2022 | Plumbing Advice

Tankless water heaters are mostly in demand these days because of their distinct feature which is a  water heating system that does not store water in a tank. Instead, it heats water on demand as you need it, using either electricity or fuel sources such as natural gas. While they have not amassed a lot of attention to send traditional tank heaters home, their popularity is fast growing as more homeowners find that they are a lot more convenient than traditional tank heaters. However, choosing which tankless heater is best suited for your needs remains a situation to deal with as different people have different needs.

How Does a Tankless Water Heater work?

A tankless water heater is designed to heat your water on demand, so there is no need to store gallons of heated water in a large tank like in traditional water heaters. Instead, the system heats the water as it passes through small heating elements and immediately delivers it to where you need it. This means that you will never run out of hot water and can always shower or wash dishes at any time without worrying about having to wait for your water to heat up.

The key component of the best tankless water heaters is its heating element. The heating element is typically located near the point where the cold and hot plumbing pipes meet, with one pipe delivering cold water from the main supply line into the unit and another carrying hot water back into the main supply line. 

If you are looking for a fast, efficient way to heat your water, a tankless water heater may be the perfect solution for you. With its advanced heating technology and ability to provide hot water on demand, this type of system is quickly becoming one of the most popular options among homeowners today. They are also known to last a long time. So why not explore all your options and see if a tankless water heater is right for you?

Types of Tankless Water Heaters

Tankless water is of various types depending on the fuel source and technology used. Some models may be more suitable for your specific needs than others. Some of the most common types include:

Electric Tankless Water Heaters

Electric tankless water heaters use electricity to heat water. These are typically the most affordable option, but they tend to be less energy-efficient than other types of tankless water heaters.

Gas Tankless Water Heaters

Gas-fired tankless water heaters are a popular choice for many homeowners, as they offer a number of benefits over other types of tankless water heater systems. These types use a gas burner to heat water. These systems tend to be more energy efficient than electric models, , making them cost-effective and practical choices for most households. They are able to heat large volumes of water at a faster rate.

However, there are some downsides to gas-fired tankless water heaters as well. For example, these systems require regular maintenance and cleaning in order to function properly, which can be inconvenient for busy homeowners who don’t have the time or expertise to perform it themselves.

Solar Tankless Water Heaters

This is similar in design to gas burners, but instead uses solar power or geothermal power as fuel sources. Powered tankless water heaters are highly energy-efficient, making them a great choice for homes that have access to renewable energy sources.

How to Choose the Right Tankless Water Heater

While choosing the right tankless water heater for your needs might be a little difficult for you, there are certain considerations which will help you choose the right model for you. These are important factors that you need to consider. 

  • The Size of your Home

The size of your home plays a vital role in choosing what tankless water heater works best for you, especially as the size of your home includes the number of rooms that will need water supply and the number of people living in the home.

  • Your Hot Water Usage 

The frequency of your hot water usage is another important factor to take into account when it comes to choosing the right tankless water for your needs.

  • Local Building Codes or Restrictions that may Apply

In addition, it’s also essential to look at the different types of tankless heaters available as well as their features and benefits so that you can make an informed decision that best meets your needs.

  • Efficiency rating

Efficiency rating should also be put into consideration, as well as your local utility rates. The lower your utility rates are, the more efficient a unit you can purchase.

  • The Cost of Repair and Maintenance

The cost of repair and maintenance of your water heater should also be considered when choosing a tankless water heater. Some units are easier to repair and maintain than others, so make sure you know what your options are before making any final decisions.

  • Space and Location

Space available and the site of installation should also be taken into consideration, especially if you are limited on space in your home. Most tankless water heaters are made to fit on an interior wall, but some can be installed outdoors.

  • Installation Requirements

The installation and what it requires can vary quite a bit from one model to the next, so it is important to confirm this information with the manufacturer before installing a tankless water heater. You will want to make sure that you have everything you need on hand before beginning installation so you don’t run into any delays or problems.

  • Budget

Consider how much money you are willing to spend on a tankless water heater and compare different models based on your budget. There are many affordable options available, but some units may be more expensive than others because of their high quality and advanced features. With these tips in mind, you should be able to find the perfect tankless water heater for your home that also fits within your budget.

Ultimately, the best way to choose a tankless water heater for your home is to do your research and find one that meets all of your needs and fits within your budget. With so many options available, there is sure to be a unit that works for you. By following these simple steps, you can feel confident that your tankless water heater purchase was a valuable investment.

Importance of a Tankless Water Heater

Tankless water heaters are popular because they offer a number of benefits over traditional tank-based systems.

The energy efficiency of a tankless water heater is far greater than that of a traditional water heater. Tank-based systems have to continuously keep heat stored in the tank, while tankless systems only need to generate heat when you actually turn on the tap. This makes them up to 80% more efficient in some cases.

Tankless systems can be installed almost anywhere there is running water and power, giving you far more flexibility than traditional systems. They are particularly useful if you live in a small home or apartment, as they don’t require as much space as other units, freeing up valuable room for other uses.

Tankless systems are also very durable and often come with a much longer warranty than traditional units.

Finally, tankless systems are typically more affordable than other types of water heaters, making them a great choice for anyone looking to save money on their utility bills. Whether you’re buying a new home or renovating your existing one, installing a tankless system is definitely worth considering.

Top Manufacturers of Tankless Water Heaters in the US

Here is a list of the top manufacturers of tankless water heaters in the US and their specifications:

  1. Rinnai
  2. Rheem
  3. Takagi
  4. Bosch
  5. AO Smith
  6. Bradford White
  7. Eemax
  8. Hubbell
  9. Paloma
  10. Titan
  11. Valiant
  12. Chronomite Laboratories inc


It can be challenging to determine which is right for you. O’Grady Plumbing has the experts available to guide you. Contact us today.

We service and install high quality commercial and residential water heaters 

Top Manufacturers of Tankless Water Heaters in the US

Rinnai Tankless Water Heaters

The majority of tankless water heaters sold in the US are made by Rinnai. Commercial heat exchangers and extensive guarantees are both included with their gas-fired water heaters.  Apart from these, their tankless water heaters come with a dual venting option and temperature control for safety purposes. While this brand is based in Japan,  it has a high market share in the US.

Takagi Tankless Water Heaters

Takagi is one of the top manufacturers of tankless water heaters in the US. Takagi tankless water heaters feature stainless steel burners for durability, as well as condensing technology that converts combustion gases into usable energy to save on costs. In addition, Takagi water heaters offer a variety of flow rates, including 10+ GPM, 7.5 GPM – 9.99 GPM and 0 GPM – 7.49 GPM. Plus, they come with remote control and digital display for easy monitoring and operation. Whether you need a water heater for residential or commercial use, Takagi has the perfect product for you!

Rheem Tankless Water Heaters

Rheem has been a water heating industry leader for over 80 years. They offer a large selection of tankless water heaters in capacities ranging from 0 GPM to 8.4 GPM and operate on both natural gas and propane. Rheem is also known for its reliability and innovative technology, including its EcoNet control system, which allows you to monitor and control your water heater remotely, no matter where you are. 

Bosch Tankless Water Heaters

Bosch is another leading brand in the water heating industry, with a wide selection of tankless water heaters to meet all your needs. Their products are known for their high energy efficiency and advanced technology, including features such as digital temperature controls, internal self-diagnostic capabilities, and more. Whether you need a water heater for your home or your business, Bosch has a model that’s perfect for your needs. However, Bosch tankless water heaters are also good for commercial or residential properties. 

AO Smith Tankless Water Heaters

With a maximum flow rate of up to 14.5 gallons per minute, A. O. Smith tankless water heaters are available in both indoor and outdoor configurations. All but the heaviest users will find that this flow rate is more than sufficient.  In addition, A. O. Smith tankless water heaters are designed with remote control and display option and offer a 15-year warranty on the heat exchanger and a five-year warranty on the other components. Whether you’re looking for water heaters for your home or your business, Bosch and A. O. Smith have the perfect models for your needs. With fast heating, high energy efficiency, and customizable options, these tankless water heaters are the ultimate choice for all your hot water needs.

Bradford White Tankless Water Heaters

Bradford White is a leading manufacturer of high-quality tankless water heaters. With fast heating, low energy consumption, and customizable settings, our advanced tankless water heaters are the perfect choice for all your hot water needs. Bradford White point-of-use and whole-home tankless water heaters are produced under the EVERHOT and KWICKSHOT brand names and are designed to meet the needs of any household. Like the other tankless water heaters, they also come with a host of advanced features like temperature control and energy-saving technology.

Eemax/ EcoSmart Tankless Water Heaters

Combining EcoSmart’s excellent environmental reputation with Eemax’s commercial and residential prowess, they create EcoSmart/Eemax. And tankless water heaters are now available for almost any application from the merged company.  Instant hot water is provided by unique, self-modulating tankless water heating technology for as long as you need it. In fact, they are so efficient with the use of energy that the “Energy Star” label is proudly displayed on every EcoSmart/Eemax tankless water heater.


Their tankless heaters have become a favorite in not only homes but also large and small businesses. And lately, they have added whole house heat pump systems to their product lines. It’s all a part of Eemax/Ecosmart’s commitment to providing the most efficient and reliable tankless water heaters on the market. To learn more about EcoSmart/Eemax, visit their website or call today to speak with one of their friendly representatives. 

Hubbell Tankless Water Heaters

In both commercial and residential settings, Hubbell electric tankless water heaters are quite dependable, with the HX/TX model standing out in industrial settings. Specifically created, the high-efficiency heating coil is installed in the Transflow type storage tank to transmit heat from the boiler water to the household water in the tank. Its cutting-edge design means there are no moving parts and no electrical connections necessary, and the choice of premium materials in the construction of its tank and heating coil guarantees a long service life. With a price range of $450 to $1000, they cost a bit more upfront than other models, but you can be sure that your investment will pay off in the long run.

Paloma Tankless Water Heaters

Paloma tankless water heaters are a great choice for the environmentally conscious homeowner. They have received several awards for their energy and water-saving features, as well as its minimal impact on the environment. Additionally, they boast efficient performance even in cold al settings. The ICAD system, which tracks and modifies combustion for increased safety, is included with every Paloma tankless water heater. Heat exchanger overheating is prevented by Overheat Limiter Film Wrap. More hot water is available for houses with high demands thanks to simple extensions utilizing the DUOnes system.

Titan Tankless Water Heaters

Titan tankless water heaters are manufactured by Niagara Industries, a company that is known for producing high-quality appliances of all types. With a long history in the industry and decades of experience, Niagara is committed to providing its customers with the best products on the market today.  The Titan tankless water heaters are some of the most reliable and efficient options available, offering features like safety features consisting of a dual microtemp sensor and a thermostat that can be manually reset. Also,  a 99.5% energy efficiency rating is given for the heaters. A pressure of 5 psi at the lowest end and 150 psi at the highest is needed for the items.


The ANSI and UL requirements are all met by every Titan product. One year of components guarantee and ten years of casing warranty are provided with the items. They are made with an easy-to-install, straightforward design and Dual Nichrome elements are utilized in heater designs.

Valiant Tankless Water Heaters

Thanks to electronic regulation of the heating output depending on intake temperature and flow rate, which are all electronically regulated, Valiant tankless water heaters provide an easy and convenient hot water supply. They make one of the top electric tankless water heaters in the US with new temperature settings of 35 °C, 45 °C, and 55 °C.  With their compact design and easy-to-install features, they are sure to meet the needs of your home.


We believe that Valiant tankless water heaters offer one of the best performance and value for money compared to other models on the market. Their high-efficiency ratings, innovative temperature controls, and compact size make them a great choice for your home.  Combined with their ability to heat small and large quantities of water, these high-tech units are always ready to meet your needs. 

Chronomite Laboratories Inc Tankless Water Heaters

Water heaters for use in commercial and residential settings are produced by Chronomite Labs as point-of-use and mini-tank models. It is highly suggested for usage in industries that have Instant-Flow water heating systems.


Point-of-use thermostatic tankless water heaters from Chronomite have incredibly rapid reaction times that allow them to regulate hot water temperatures 120 times per second, doing away with the risk of scorching and the requirement for mixing valves. All point-of-use under-the-counter sink or basin applications benefit from these compact, lightweight water heaters, which are also easy to install.

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