The 7+ Best Commercial Tankless Water Heater (Reviews & Buying Guide)

People sometimes think that the residential And Commercial Tankless Water Heaters are the same, but they are different in many ways, including water pressure requirement, flow rate, and power, etc.

You can cascade up a few of the commercial tankless water heaters for fulfilling the large demands of hot water. For supplying constant hot water, hotels and other public places widely make use of the commercial tankless water heaters.

Here, we have compiled a list of the Best Industrial Tankless Water Heaters for you to pick the one that best suits your commercial hot water requirements.

The 7+ Best Commercial Tankless Water Heater Reviews 2019:

We have compiled a list of some of the top commercial Tankless water heaters down here which can be really helpful for you In choosing the best one that can really meet all your hot water requirements.

IMAGEPRODUCTDimensionsWeight
Gas Tankless Water Heater
Rinnai Ultra Series RUC98iN12.5 x 10 x 26 inches81.6 poundsCHECK ON AMAZON
Gas Tankless Water Heater
Rinnai Natural Gas RL75iN Tankless Water Heater Reviews 2019
Rinnai Natural Gas RL75iN14 x 9.3 x 23 inches50 poundsCHECK ON AMAZON
Gas Tankless Water Heater
Rinnai Natural Gas RL75eN Tankless Water Heater Reviews
Rinnai Gas RL75eN14 x 10 x 23 inches43.6 poundsCHECK ON AMAZON
Gas Tankless Water Heater
best Rheem RTG-64XLN Tankless Water Heater
Rheem RTG-64XLN14 x 10 x 26 inches38 poundsCHECK ON AMAZON
Electric Tankless Water Heater
Stiebel Eltron 24 kW Tempra Plus Tankless Water Heater Reviews 2019
Stiebel Eltron 24 kW Tempra Plus21.7 x 20.1 x 9.6 inches16.1 poundsCHECK ON AMAZON
Gas Tankless Water Heater
Takagi T-K4-IN-NG Tankless Water Heater Reviews
Takagi T-K4-IN-NG8.5 x 13.8 x 20.5 inches43 poundsCHECK ON AMAZON
Gas Tankless Water Heater
Naiven NPE-240-A————————————CHECK ON AMAZON
Gas Tankless Water Heater
Noritz NC380-SV-ASME NG ASME39.3 x 24.3 x 13.3 inches105 poundsCHECK ON AMAZON

Best Commercial Tankless Water Heater Reviews:

1. Rinnai Ultra Series RUC98iN Tankless Water Heater:

Best Commercial Tankless Water Heaters of 2019

Rinnai Ultra Series RUC98iN Tankless Water Heater Features:

  • Large Flow Rate:

This commercial tankless water heater provides 9.8 GPM flow rate, which enables this tankless water heater supply endless hot water to fulfill your requirement. The power range of this Commercial Tankless Water Heater is from 15200-199000 BTU/hour. And this unit requires just two watts for keeping this system up and running.

  • High Temp Range:

For commercial usage, the temp of tankless water heater can go up to one hundred and eighty-five degrees Fahrenheit. It can perfectly meet the demand of continually large flow of hot water supply. But you will also have to acquire an additional commercial remote controller. If you are getting this tankless water heater for the residential use, then the temp of this unit can still reach one hundred and forty degrees Fahrenheit.

  • Short Waiting Time:

This commercial tankless water heater takes only twenty secs for heating your water. And once this tankless water heater is done heating up your water, you can use it to have unlimited hot water. You can hardly hear any working noise of this commercial tankless water heater. This commercial tankless water heater can also provide two venting options, twin-pipe and concentric PVC for the durable choice.

Pros:

  • 95 high energy rating
  • Two venting options
  • Five-year guarantee on heating parts
  • High temp range with the commercial remote
  • Requires just two-watt for keeping the machine up and running
  • No clear noise can be heard

Cons:

  • Have to be installed by a professional
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2. Rinnai Natural Gas RL75iN Tankless Water Heater:

Top Commercial Tankless Water Heater Reviews 2019

Rinnai Natural Gas RL75iN Tankless Water Heater Features:

  • 5 Gallons Per Minute Flow Rate:

This commercial tankless water heater provides 7.5 GPM water flow rate at one hundred and twenty degrees Fahrenheit. The power consumption of this unit is between 10300-180000 BTU/hour. One unit can easily support 2 or 3 fixtures at a time. If you are willing to use this tankless water heater for the commercial use, then you should consider cascading numerous of them together.

  • 160 Degrees Fahrenheit Temp:

If you are using this tankless water heater for the commercial use, then the max temp can go up to one hundred and sixty degrees Fahrenheit. You also need to purchase a remote controller separately. If you are using this tankless water heater for the residential use, then the max temp can be between ninety-eight to one hundred and forty degrees Fahrenheit.

  • Simple Operating Control Panel:

Error codes and temp are displayed on the screen on your unit. This tankless water heater also has buttons that can be simply operated for adjusting the exact water temp you desire to have. The electronic solenoid valves are also included for better controlling the gas and water flow.

Pros:

  • Outdoor air for safer combustion
  • Eighty-two percent thermal efficiency
  • Perform faultlessly
  • Quiet functioning performance
  • Energy efficient
  • Self modulate technology for heating up water just when you utilize it

Cons:

  • Venting kits can be difficult to install
  • It can fluctuate a little
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3. Rinnai Natural Gas RL75eN Tankless Water Heater:

Best Industrial Tankless Water Heaters 2019

Rinnai Natural Gas RL75eN Tankless Water Heater Features:

  • Endless Supply Of Hot Water:

The max flow rate that this commercial tankless water heater provides is 7.5 GPM. The water temp will stay constant even if multiple faucets or bathrooms are in use at the same time. But the waiting time could be a little long.

  • Large Temp Range: 

The temp range of this commercial Tankless Water Heater is between ninety-eight and one hundred and sixty degrees Fahrenheit. You will have to purchase a remote controller separately. A control unit also comes with this commercial tankless water heater, but if you desire to adjust the temp using it, then you will have to hook the control unit up.

  • Freeze Protection:

This commercial tankless water heater also features the freeze protection device. Once the temp outside reaches low, this smart sensor can sense the cold weather outside and then take the necessary measures automatically for protecting itself. You can also control this commercial tankless ware heater remotely using the Wi-Fi no matter wherever you are. But obviously, you need an internet connection for that.

Pros:

  • Stable temp and water flow
  • Simple to install
  • Remote control is Wi-Fi enabled
  • Eighty-two percent thermal efficiency
  • Constant hot water supply
  • Simple operated control panel

Cons:

  • Working noise is a little loud
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4. Rheem RTG-64XLN Tankless Water Heater:

Commercial Hot Tankless Water Heater

Rheem RTG-64XLN Tankless Water Heater Features:

  • Weight And Shape:

The weight of this commercial tankless water heater is about thirty-eight pounds and is rectangular in shape. The weight and shape of this tankless water heater make it perfect for installing outside.

  • Style:

This commercial tankless water heater’s style is production oriented and specific. The medium-efficiency outdoor tankless water heater is totally dedicated to its production that can find people pleasure simply.

  • Color:

For ensuring the gorgeous outlook of this commercial tankless water heater and specifying this product, it has a mind-blowing grey color.

  • Flow Rate:

This commercial tankless water heater provides 6.4 gallons per minute flow rate. This flow rate really qualifies the wonderful temp based on the present weather condition.

  • Installation:

This tankless water heater is completely mounted for installing outside. Once you have installed this tankless water heater outside, you can get better performance.

  • Power Source:

For complying the outstanding performance and production capacity, this commercial tankless water heater requires 120 volt AC, hard-wired or plug.

  • Special Features:

This commercial tankless water heater also comes with many special features. These special features include: 0.40 gallons per minute minimum activation flow rate, heat exchanger, low production of Nitrogen Oxide, overheat film wrap for the heating protection, and high altitude ability up to 9840 feet above the ocean level.

Pros:

  • Low and high altitude both accessible
  • Simple to utilize
  • Exclusive water-saving settings
  • Heating cost saver and energy-efficient
  • Suit a great range of power input
  • No cold water sandwich

Cons:

  • Have to be fitted by the experts
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5. Stiebel Eltron Tempra Plus 24 kW Tankless Water Heater:

Stiebel Eltron 24 kW Tempra Plus Tankless Water Heater Reviews 2019

Stiebel Eltron Tempra Plus 24 kW Tankless Water Heater Features:

  • Full Power Modulation:

This commercial tankless water heater has a complete power modulation system. This system is capable of fulfilling your demand for large power usage for the commercial properties. This tankless water heater also has the power to supply five GPM of hot water per minute. The Stiebel commercial tankless water heater also shows the best performance by providing hot water under forty-five degrees Fahrenheit.

  • Stable Water Temp:

For controlling the constant temp of the water in diverse water flow levels, an advanced flow control system is utilized. If you are using this tankless water heater commercially, then you’ll have to keep flawlessly, and stable hot water flow by simply regulating the pressure of the water automatically.

  • Ninety-Nine Percent Energy Efficient:

The thermal efficiency of this commercial tankless water heater can reach up to as high as ninety-nine percent. Thus hardly ever energy is wasted when you are using this tankless water heater. Because of its reliable cover and high-level electronic parts, this tankless water heater is commonly utilized for the commercial properties. When this tankless water heater is working, you will not hear any working noise as it is very low.

Pros:

Cons:

  • Hard to install, requires heavy-duty wiring and 240v power
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6. Takagi T-K4-IN-NG Tankless Water Heater:

Takagi T-K4-IN-NG Tankless Water Heater Reviews

Takagi T-K4-IN-NG Tankless Water Heater Features:

  • Free Installation:

You can install this heater machine, both outdoor and indoor. If you are going to install this tankless water heater somewhere indoor, then you will have to install the venting facilities as well. You can also install this unit either horizontally or vertically as per your choice. If you don’t have any idea about it, then you can simply hire a professional to do the job for you.

  • Self-Diagnostic System:

This tankless water heater also comes with a self-diagnostic system and led light shows off on your console, the error codes also display when something wrong takes place. Besides, the freeze protection system is also fitted for stopping the machine from freezing during the winter season.

  • Stable Water Temp:

If you live in a colder climate and worry about the temp of the water, then don’t worry. When you have this tankless water heater installed, it will keep the water temp stable, and the colder weather will not affect it. The temp can range from ninety-nine degrees Fahrenheit to one hundred and sixty-seven degrees Fahrenheit with the remote control for commercial usage. The power that is needed can range from 11000-190000 BTU/hour.

Pros:

  • Digital remote control
  • Both outdoor and indoor installation
  • Internal freeze protection system
  • Max water flow rate can reach up to eight gallons per minute
  • Large power
  • Hot water supply is not affected by the climate

Cons:

  • Installing the digital remote control is an additional charge
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7. Naiven NPE-240-A Tankless Gas Water Heater:

The Top Commercial Tankless Water Heater

Naiven NPE-240-A Tankless Gas Water Heater Features:

  • Incorporated Recirculation Pump:

This tankless water heater is regarded as the most technically advanced commercial tankless water heater. This tankless water heater comes with a built-in recirculation pump and hot buffer tank. These systems are used for eliminating the cold water sandwich and saving the water bills by simply cutting the waiting time for the hot water. It can also cut the cash on purchasing an additional pump.

  • Ready-Link Cascading Technology:

The technology allows the user to cascade up to sixteen units easily, and it can also support the common vent up to eight units. The max water flow rate of this commercial tankless water is around nine GPM; thus, when you cascade them up, you’ll be capable of utilizing it for the commercial usage simply.

  • Stable Temp:

This tankless water heater will always keep your water temp stable, and it rapidly corrects temp if it draws stop abruptly. The outside interface will show you the error codes and so that you can simply adjust the temp you desire.

Pros:

  • Powerful adequate for commercial usage
  • Satisfying consumer service
  • Condensing kinds for saving energy
  • Clear installation and utilizing instructions
  • Intelligent preheating system
  • Short waiting time is made sure because of the fast heating time

Cons:

  • Don’t come with any remote controller, you have to purchase it separately
  • It can produce a little working noise.
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8. Noritz NC380-SV-ASME NG ASME Natural Gas Tankless Water Heater:

Noritz NC380-SV-ASME NG ASME Natural Gas Tankless Water Heater 2019

Noritz NC380-SV-ASME NG ASME Tankless Water Heater Features:

  • Manufactured With The Safety In Mind:

This tankless water heater has incorporated safety devices that can protect the tankless water heater comprising an overheat prevention device, flame sensor, lightning protection device, and device for freezing protection of tankless water heater., all backed by a 5-year of warranty on parts.

  • Built For Efficiency:

This commercial tankless water boasts an eighty percent of thermal efficiency rating and a direct electric ignition that can really be used to avoid always-on pilot light fittings that can ultimately save you money and fuel.

  • Modern And Compact Design:

This commercial tankless water heater has a compact design that can simply permit for both outdoor and indoor installation.

  • Temp Control:

The Noritz tankless water heater comprises a simple-to-utilize thermostat affixed to the front panel, permitting the convenient temp control for the tankless hot water heater.

  • Multiple Unit System:

You can also link this amazing tankless water heater together with up to twenty-four units for fulfilling all of your hot water demands.

Pros:

  • High temp
  • Designed for hotel
  • Compatible with the circulation units
  • Highly energy efficiency
  • Both propane and natural gas accessible
  • First-rate material on the heat exchanger

Cons:

  • Have to be fitted by a professional
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How Can Select The Best Commercial Tankless Water Heater?

Normally, hotels make use of the commercial tankless water heaters. That is because hotels need a large amount of hot water all the time, and only the industrial tankless water heaters can fulfill this requirement.

How Can Select The Best Commercial Tankless Water Heater

If you are also considering buying a commercial tankless water heater then keep the following points in mind for selecting the best one:

  1. Flow Rate:

For having a satisfying showering experience, you should always go for a commercial tankless water heater that has a large enough flow rates. The average flow rate a commercial tankless water heater is about nine GMP. But of course, you can go for numerous others options as well based on your everyday hot water requirements.

  1. Quality:

The quality of it determines the using safety and service life of a commercial tankless water heater. There is a particular standard of the heat exchanger of the commercial tankless water heaters and the other internal materials of it. If you select the best-quality commercial tankless water heater, then it can be capable of saving you a lot of money in repairing and maintenance.

  1. Energy Efficient:

As the power rate of commercial tankless water heaters is quite huge, they’re in fact pretty expensive in the using time, and if they’re designed high energy efficient, they’ll assist you in saving much cash for you every month.

  1. Power:

The power of this machine determines the water flow of a commercial tankless water heater. The water will not flow without a flaw if the power is not enough. Therefore, it is best to go for the unit that is super powerful.

  1. Temperature:

Because of its particular applications, the temp range of a commercial tankless water heater is usually higher than the residential tankless water heaters. It can range from ninety-eight degrees Fahrenheit to one hundred and eighty-five degrees Fahrenheit, while max temp can reach up to one hundred and forty degrees Fahrenheit.

Commercial Tankless Water heater Features:

The following are some of the amazing features of a commercial tankless water heater that you will really get to enjoy:

Commercial Tankless Water heater Features

  1. Electricity Saver:

When you install a commercial tankless water heater, then you will not have to wait to preheat and to warm the water. It means that there is no loss of heating in the entire using process and it will also Reduce Your energy bills.

  1. Time Saver:

The commercial tankless water heaters can really save a lot of your precious time. You will not have to wait for the hot water when you have installed a commercial tankless water heater. The tankless units supply you hot water instantly when you need it.

  1. Safe:

The majority of the large power commercial tankless water heaters are designed with over pressure protection and overheating protection system for protecting your machine in danger.

  1. Space Saver:

The commercial tankless water heaters are designed as compact and small, unlike the tank types. This feature makes it easy for you to install tankless water heaters anywhere you want. You can definitely install a commercial tankless water heater with a large flow rate even in your small studio.

  1. Convenient:

You can install your commercial tankless water heater directly in your bathroom. You will not have to break your walls, and several buttons are set for adjusting your water temp.

Attention:

One commercial tankless water heater is usually not enough in the big hospitals and hotels to fulfill the hot requirement because of the huge demand of power and hot water. Therefore, you have to cascade numerous of them together. If you don’t know how and what to do about it, then please consult the manufacturer first and then acquire a professionals help.

What We Have Chosen Is:

After going through all the available options, we think that Rinnai Ultra Series RUC98iN Tankless water heater would be eh best option for you to choose. For the commercial usage, this commercial tankless water heater features the max temp is up to one hundred and eighty-five degrees Fahrenheit. Thus, it can supply you hot water instantly and flawlessly. This commercial tankless water heater also features 0.95 high thermal efficiencies and a large flow rate.

Best Commercial Tankless Water Heaters of 2019

The powerful performance of this tankless water heater makes it the ideal option for commercial areas. The heating time of this tankless water heater is also very fast and can really help you in saving heating costs and much water. If you are really interested in Buying Rinnai Ultra Series RUC98iN Tankless water heater (Amazon Link ), then you can simply check more details regarding price and other details on Amazon. You can also find a lot of discount options which can also be really helpful in saving much money.