Best Tankless Water Heater Reviews for 2018 (Buying guide)

Tankless Water Heater Reviews (Rating 4+)

Have you ever experienced the water going cold suddenly while you are in the shower? Do you need to heat water constantly though you use it occasionally? Yeah, us too. Hence, we have come up with these tankless water heaters which offer an endless supply of hot water for the entire family. You are sure to save an ample amount of money as you install these tankless water heaters in your home. You are also going to save on your gas expenditure with the installation of these devices.

Comparison for Tankless Hot Water Heater Reviews

Tankless Hot Water Heater Author Rating Item Dimension Buying Link
EcoSmart ECO 27 Electric Tankless Water Heater **** 17 x 17 x 3.75
Stiebel Eltron Tempra **** 21.8 x 19.2 x 9
Eccotemp i12-NG Indoor tankless heater, 1/2 inch NPT water fittings **** 7.2 x 7.2 x 7.2


Marey Power Gas Tankless Water Heater **** 21.8 x 16.2 x 10


Ariston GL4S Electric Mini-Tank Water Heater **** 12.2 x 14 x 14


Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless **** 12.2 x 14 x 14


Takagi T-KJr2-IN-NG Indoor Tankless Water Heater ***** 21.8 x 19.2 x 9


Rinnai RL94iN Natural Gas Tankless Water Heater **** 17 x 17 x 3.75


Rheem RTE 13 Electric Tankless Water Heater ***** 7.2 x 7.2 x 7.2



Best 5 Tankless Water Heater Reviews (Top Performing)

These days, reviews are given equal importance as recommendations from reliable people. Reviews on tankless water heaters will enable you to make the most realistic assessment of the worthiness of the products, its pros and cons that will make it easier for you to pick the top rated products, coming within an affordable price. In other words, if you are wondering what is the best tankless water heater, reviews of the on demand hot water heater will make it easier to pick the most suitable option. Hence, you should refer to the reviews as the easiest yet the most effective ways to find what is the best tankless water heater.

The discussion on the best tankless water heater will be incomplete, if you don’t include the collections of Marey tankless water heater. It is for the reasons that this brand has got a reputation for offering top class products with advanced features, simple user-interface and high functions, coming within affordable cost. The aforesaid model is not an exception in this regard.

Marey Power Gas 10L Digital Panel Tankless Water Heater

This is a cheap, Gas-powered model that features extremely positive reviews on tankless water heaters and hence, a best buy for the buyers. Featuring a sleek & trim design and with the capacity to serve 10 Liters of hot water at a go, this a top rated item  in its category.

Marey Power Gas Tankless Water Heater



  • Space-friendly
  • Easy to install
  • Comes with foolproof safety arrangements.




  • Comes without the Hose and regulator
  • The batteries are to be purchased separately the escalate the cost.
  • No suitable for larger houses and commercial purposes.

  • Rinnai Hot Water Heater RUC98iN Ultra Series Natural Gas Tankless Water Heater

As it comes  up from the tankless electric water heater reviews, this model of Rinnai tankless water heaters is one of the top choices among the buyers for its robust capacity, energy-efficient design as well as the  cheap Rinnai tankless water heater price.

The manufacturer has done a wonderful job to give this model a sharp design that makes the model suitable for installation anywhere and putting the minimum effort. The controllers of these units come with 12 year warranty while the Rinnai tankless water heater parts offer warranty coverage of 5 years.  The positive Rinnai tankless water heater reviews should give you the confidence to opt for this model with a good faith. After all, you can trust a model that features high tankless electric water heater reviews.

Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater, Concentric/Twin Pipe Installation



  • Sleek & trim design
  • This tankless electric water heater is easy to install.
  • The Rinnai tankless water heater reviews comes extremely positive




  • Some issues noted with the packaging
  • The effective rate of water flow is below the satisfaction standards.
  • Lesser warranty term for commercial users.

  • Rheem Hot Water Heater Reviews for  RTE 13 model Electric Tankless Water Heater

One of the top choices of the buyers in the category of Hot water heater,Rheem tankless water heaters offer the sweetest return for its price that  stays within affordable range. Hence, its entry in the list of the best tankless hot water heater, stand out of the scopes of debate.

Rated among the best tankless hot water heater,  the  Rheem tankless water heater is extremely sharp in its design and  suitable for domestic as well as commercial purposes. As it comes up from the Rheem tankless water heater reviews, the existing users are extremely happy with the functionality and the simple user-interface of this water heater.

Rheem RTE 13 Electric Tankless Water Heater



  • Comes with power modulator.
  • Features brass/copper heat Exchangers that make the machine power-efficient
  • Affordable price.




  • The installation process is a bit complicated and takes a good deal of effort and time.
  • A Lower effective rate of water flow.
  • Limited warranty on the parts

  • EcoSmart Tankless Water Heater ECO 27 Electric Tankless Water Heater

The listing of the best tankless hot water heater will be incomplete, without the inclusion of this Ecosmart tankless water heater model. The sleek and compact design of this hot water heater will address the challenge of space crunch and the stylish design will add elegance to the appearance of the space.

EcoSmart ECO 27 Electric Tankless Water Heater,

One of the key features of this model is its digital temperature controller that will enable you to control the temperature of the water effectively. As you can make it from the tankless hot water heater reviews for this model, this heater is extremely power efficient that will enable you to keep the operating cost within affordable extent, in addition to its superlative quality and cheap tankless water heater prices



  • Easy to install
  • Power-efficient.
  • Compact design that makes the device space-friendly and simple to install




  •  Limited warranty on parts
  • The weight of the device is slightly towards the higher side.
  • Limited availability outside the United States

  • Navien Tankless water heater reviews 

This Navien tankless water heater will be a worthy choice to make as the product can ensure a seamless supply of hot water. One of the best Tankless water heaters available in the market, this item will impress you with its aesthetic appearance and comprehensive functionality. If truth be told, this model has turned into a top choice of the buyers in the United States and in Canada.

Navien NPE-240-A Tankless Gas Water Heater

This high quality tankless gas water heater operates on a modern Preheating technology that will heat the water instantly and hence, the machine is extremely power-efficient. The construction of the Heat Exchanges with stainless steel material makes it highly durable and it will enable you to escape the threats of frequent repairs and replacements and the expenses involved in these regards.



  • High Quality machines and Extremely durable
  • Simple to install
  • Comes with standard length warranty.




  • Overweight
  • Warranty coverage not valid for online purchases.
  • In some cases, it was observed that the machine started leaking, just within a few months from installation.


How does a tankless water heater work?

If you wish to find the best tankless water heater, you will require having knowledge as how the tankless water heater works. Putting in simple terms, a tankless hot water heater comes without the storage tanks and it heats the water directly. As it comes up from the tankless water heater reviews, if the tap attached to the tankless hot water heater is turned on, it cold water gets into the systems through a pipe. The best tankless water heater will either have Gas or electric-operated heating systems for heating the water. It is for this mechanism that the best tankless water heater can ensure the supply of hot water, seamlessly.

Here we have shortlisted five of the best tankless water heater reviews which assist you in choosing the right one that caters to your needs:

Best 5 Brands for Tankless Hot Water Heater

  • Marey Power: The high tankless hot water heater reviews that the hot water heater from this company enjoys, justifies its standing as  one of the top brands in this category of products.  The electric tankless hot water heater from this brand gets appreciated by the user as it adopts modern technology, feature robust functionality and a simple user-interface that make these devices truly universal. The best part about these devices lies with its aesthetic design and compact size that makes it highly space friendly. These devices win the Hearts of the users with the wonderful user experience that it offers.
  • Rinnai: if you are looking for the Rinnai tankless water heater reviews, Rinnai is one of the brand that you should opt with confidence. No matter you consider the aspect of durability, power-efficiency, user-friendliness or even if you are considering the aspect of design and ease of installation, devices from this brand is top choice. The icing on the cake is with the affordable cost of tankless water heater, and hence, you will never find it tough to afford these products. The reputation of the manufacturer for offering delightful post-sale services is another factor that gives the brand a position in the list of the top rated tankless hot water heaters
  • Rheem: are you looking for the tankless water heater electric or gas-operated models that offer robust functionalities and come within the modest rates? If so, the Rheem electric tankless water heater as well as the gas hot water heaters is the options that you should opt for. Installing these devices that takes the minimum effort and time, you can ensure the supply of hot water in sufficient volume. The models of cheapwater heaters from this provider comes with the highest extent of power efficiency and hence, you can keep the operating expenses within reasonable extent. The tankless hot water heater reviews suggest that this Brand, deserves a position in this list.
  • EcoSmartthe model likEcosmart eco 27 electric tankless water heaterhas impressed the users with its enticing design, operational and power efficiency that makes the devices from this brand one of the best tankless water heater. The manufacturer ensures that the users face no troubles for the installation of these devices and as a matter fact, these devices require the minimum effort and time cleaning and maintenance. Hence, these products are highly suitable for the lifestyle in contemporary times. Thus, the decision to invest in these products will be definitely a wise move.
  • NavienYou might hold the notion that the best Tankless water heaterwill inevitably involve high costs. This notion is ought to change, if you refer to the affordable yet high-functional, whole house electric tankless water heater from this brand. Buyers appreciate these devices as these products operate in the modern heating technology that ensures the minimum power consumption and hence, the operating cost will stick within reasonable limits. Reviews of the devices from this provider come exceptionally positive and hence, you should opt for these products with the faith that you will be getting the best value in return for your money.

There are more good in the market like Bradford White water heaters reviews. You can see them here.

3 tankless water heater pros cons

Following are the key points in terms of the tankless water heater advantage:

  • No matter you are opting for the Electric or Gas operated models, the hot water heater are extremely power efficient and hence, you can escape the threats of extravagant operational cost.
  • These models are designed in a style that it can accommodate within the minimum space. Likewise, these devices are extremely easy to install and requires the minimum care taking needs.
  • Can ensure the seamless supply of hot water for domestic and commercial uses.

The major drawbacks of these devices are:

  • The cost of the device being on the higher sides and on that, considering the cost of installation, the set up expenses get to an extravagant extent.
  • These devices can serve hot water through only one faucet at a time.
  • Issues with the availability of the spares and accessories that makes the task of repairing a challenging job.

Tankless water heater prices in the market 

How much does a tankless water heater cost?  It will depend on the features that the concerned device holds, its size, as well as serving capacity. Depending on these factors, the cost of these devices from different brands are ought to vary. The most effective way to get an idea about the cost of these products will be to refer to the reviews.

Checking the review, you will be able to find the best tanskless water heater, coming within the most affordable price. Hence, before you buy these products, you should inevitably refer to the review of different brands and models of tankless hot water heaters.


Final Verdict

Once the different brands of leading tankless water heater have been reviewed, the question that will come up in your mind is which is the best option to opt for. Well, this will be a tough call, considering the fact that all the models reviewed above, offer tremendous values in return for its cost and comes with its respective pros & cons that are truly hairline cases to compare.

However, if one of these brands has to be conferred the title of the winner, though the margins will be really narrow, it is definitely EcoSmart that deserves the rating. It is for the reasons that the products from this provider are extremely robust, durable as well as function with the highest extent of efficiency and as such, ensures that users are served with the highest utility. Here are some electric tankless water heater discussed here.

Reviews of these devices come extremely positive and hence, these products definitely deserve the top slot in the list of the Best Tankless water heater.