All About The Best Tankless Water Heater For Everyday Use

A huge energy saver by itself, these on-demand, high-power heaters couldn’t have come more beneficially and economically (a point which I will prove to you very soon!)

Since my prized tankless water has been installed at home, my eldest daughter who was constantly whining about the lack of hot water back when we still had the traditional one is now very grateful. And as for my friends who are still using regular water heaters, I often end up being asked as to how I found the best tankless water heater among the multitude of choices in the market today.

I will share features you should look for in selecting the best for your home, as well as some of the best products for you to choose from!


**Below, you'll find our more detailed reviews, but you can also click the links above to see current prices or read customer reviews on Amazon.

What Is A Tankless Water Heater?

Known as demand-type or instant-on water heaters, tankless water heaters mainly makes hot water whenever you need it. As such, these flash water heaters don’t produce the standby energy losses that are used with the traditional storage water heaters — a feature that will save you tons of cash in the long-run.

How Does A Tankless Water Heater Work?

Have you ever wondered how your hot dishwasher or clothes washer work? Or just how the most remote of bathrooms or hot tubs operate? Tankless water heaters do their jobs without the use of a storage tank.

Your water gets heated with the help of a gas burner or an electric element and travels through a pipe into the device’s unit. So in case you are still wondering, this is exactly how your “instantaneous” water heater delivers a solid task of producing a nearly endless supply of hot water.

Has Flow Sensors

In addition, the installed heater in the unit is equipped with flow sensors which are activated when water is passing through. And with the use of a negative feedback loop, the water is brought to your targeted temperature. As per the unit’s coating, it is armed with durable coatings along with other acid-resistant add-ons to withstand temperatures of 1000 °C

Has High Flow Rates

However, this seemingly constant supply of hot water also has its limits. Your usual tankless water heater provides hot water at a rate of 2—5 gallons per minute while the gas-fired flash water heaters produce an even higher flow rates than the electric ones. With this, your inevitable simultaneous and multiple uses of hot water in your household could also dry up the largest, gas-fired models out there.

But worry not, my hot water-obsessed users, this common problem can now be resolved. By simply installing two or more tankless water heaters on a paralleled system, your aggressive demand on hot water is achieved.

POU, Tankless And Hybrids

Most of the tankless water heaters that reside in your bathrooms are point-of-use tankless types. As such, the water is almost instantly hot upon you choose the temperature and turn the machine on. POU tankless water heaters are more favored than the centrally installed tankless water heaters as no wasted water is left in the supply pipes as soon as you choose to shut it off.

Meanwhile, the hybrid tankless water heaters use a water heating system that combines the features of both the tank-type and tankless water heaters. In a nutshell, your hybrid instantaneous water heater maintains water pressure and the consistent supply of hot water in virtually all the water applications in your household.

Learning The Advantages And Disadvantages Of Tankless Water Heaters

As it also goes for a tankless water heater, your soon-to-be unit will have its own set of advantages and disadvantages. Before you head to the nearest store, it is a must that I cover these for you before I finally divulge my top list for this year’s best tankless water heater.


Savings In The Long Haul

Despite the initial high expense of installing a tankless water heater, your spending will be compensated soon as the unit starts operating under a lower energy use.

Unlimited Hot Water

While this equates an ecological downside, the use of a tankless water heater will deliver a flow rate that is almost sure as it is indefinite.

Takes Less Physical Space

Significantly smaller than tank-type water heaters, tankless water heaters can be mounted on a wall or a building’s structure.

Reduced Risks Of Water Damage

As water storage is not present in tankless water heaters, the risk of a rupture or even a tank failure is lessened significantly.

Safer To Use

If you have a fear of reaching dangerous temperature spikes and levels, then tankless water heaters can prevent you from these troubles. Your instantaneous water heaters have a mechanism that precisely controls water temperatures.


High Initial Costs

To piggyback on this unit’s first advantage, installing a tankless water heater comes at an increased cost. Western countries, for example, have unusually high prices as these types are not statistically dominant.

Noticeable Start-Up Delay

As a tankless water heater only heats water on demand, the idle water in the piping should start at a room temperature.

Lack Of Heat Source Flexibility

As they use either gas or electricity for heat, the design of a tankless water heater may not allow other heat sources that generate renewable energy options.

Incompatible With Recirculation Systems.

As your heater is inactive when hot water is not in use, the devices are not compatible with the passive or convection-based hot water recirculation systems.

Water Will Have A Lower Pressure

Compared to having your own tank full of water supply, the pressure of which is fully controllable by you, you may have to expect a lower supply pressure depending on what is being transmitted in your area.

Dependent On Electricity

Evidently, as all tankless water heaters either rely on gas or electric, this all goes down when either of these elements is down. Meanwhile, tank-type water heaters can still supply the hot water that is stored in the tank.

The 5 Best Tankless Water Heaters In 2017

**Below, you'll find our more detailed reviews, but you can also click the links above to see current prices or read customer reviews on Amazon.

1. Eccotemp L5 Portable Tankless Water Heater and Outdoor Shower

Eccotemp L5 Portable Tankless Water Heater and Outdoor Shower


An endless hot water is a classic feature of this topnotch tankless water heater. As it is equipped with liquid propane fuel, 2D Cell Battery Ignition and a minimum flow rate of 0.3 liters per minutes, Eccotemp’s water heater is ideal for campsites, cabins and utterly inside your house.

For an even better cleaning, this product is suitable to be attached to a pressure washer. While the ideal operating range for this water heater is 20-80 PSI, the system can also be used on modified water systems like a 12-volt pump. One of the very best today, this can offer 30-35 degree rise at 1.5 gallons per minute.


  • Uses liquid propane fuel
  • 2 D cell battery ignition
  • Ideal for campsites & cabins
  • 0.3 liters/minute minimum flow rate
  • needs 20-80 PSI of water


  • Problematic adaptors
  • Cheap quality parts
  • Reported cracked pipes

2. EcoSmart ECO 27 Electric Tankless Water Heater

EcoSmart ECO 27 Electric Tankless Water Heater


Specifically designed for efficiency, durability, and easy replacement, this water heater also showcases its copper and stainless components in a compact size. As such, this product is ideal for those who would like to save some valuable storage space while being modern and stylish at the same time.

If you are conscious with your budget, this may be the right product for you as it could let you save up to 50% on water heating costs. All in all, this unit is ideal for those who reside in the U.S. where incoming water temperatures can reach as low as 37°F.


  • Can save up to 50% on water heating costs
  • Has a digital temperature control in 1-degree increments that allows control of hot water
  • Copper and stainless components
  • Compact size for a more valuable space


  • Inconsistent temperature
  • Flickering LED lights

3. EcoSmart ECO 11 Electric Tankless Water Heater

EcoSmart ECO 11 Electric Tankless Water Heater


An even mightier entry from EcoSmart, the ECO 11 Electric Tankless Water heater can let you save to up to 60% on your water heating costs. Also, it has the most advanced, self-modulating technology available in the market today.

Along with the ECO 27, this tankless water heater has a digital temperature control in 1-degree increments. Meanwhile, this one requires a minimum 125 amp electrical panel for installation with one 60 amp double pole breaker connected to one set of #6 awg wire.


  • It has a lifetime warranty
  • Digital temperature control in 1-degree increments
  • Can let you save up to 60 percent on water heating costs
  • Ideal for small apartments or small point-of-use applications


  • Inconsistent heating temperature
  • Flickering LED lights
  • Requires an independent electrical installation

4.  Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater

Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater


Specially developed for under the counter or crawl space installation, this water heater is ideal for all your hot water needs. With a side-mounted cold water inlet and hot water outlet included, its installation is going to be easy as it is also 6 gallons short.

A 6-year warranty is guaranteed for this unit that also boasts of a single 120 volt 1650 watt copper heating element.


  • For under counter or crawl space installation
  • Suitable for all hot water needs
  • Has side-mounted cold water inlet and hot water outlet
  • 6 gallon short
  • Single 120 volt 1650 watt copper heating element


  • Problematic construction
  • Reported issues on its pressure release valve

5. Takagi T-KJr2-IN-NG Indoor Tankless Water Heater

Takagi T-KJr2-IN-NG Indoor Tankless Water Heater


Ideal for those who are critical in gauging the unit’s temperature, this indoor tankless water heater is equipped with inlet and outlet thermistors to aid you in monitoring. This flash water heater also has 140,000 BTU and 6.6 GPM max flow rate. And to create a safer system, this one requires a 4-inch category III stainless steel for ventilation.The T-KJr 2 model is the smallest unit under the Takagi roster.


  • Ideal for light residential
  • Suitable for radiant heating applications
  • Includes inlet and outlet thermistors for critical monitoring
  • Smallest unit under the Takagi line-up


  • Does not have brass fittings
  • Complicated installation

What Do We Recommend?

What Do We Recommend?


Whether it is going to be your prized water heater in the bathroom or a centralized source for your daily hot water consumption, the Eccotemp L5 Portable Tankless Water Heater and Outdoor Shower and the Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater should be able to address these needs. I find these products to be just at their appropriate sizes, fuel type and best availability among the other choices.

And what else? They are also energy-efficient and pocket-friendly. And for products that should be able to thrive in years, these qualities are not only necessary but have also been met. Using this myself, I have found it not only reliable, but I have also seen noticeable improvement to my budget!

I hope this list may guide you through in finding the best tankless water heater around. Share with us your experience in how you found (and install!) your instantaneous water heater!​

Paula Hughes

I’m Paula, and I’m absolutely in love with food blogs. I’m a foodie at heart but being the mother of two small boys, it’s not always easy to keep up with fancy dinners… so I rely on the support of other blogging moms like me to help along the way.

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