Best Tankless Water Heater Natural Gas – Guide & Reviews

It is one of the latest and innovative idea to use a tankless water heater instead of the traditional water heater. Due to few remarkable concerns including increasing utility cost and environmental effects many people are shifting to tankless water heater with natural gas system. the best tankless water heater natural gas the latest technological touch to this site. When the tankless water has invented, the utility bills reduced more than half, and natural gas contributed here significantly.

Today, the world got a lot of technological advancement and uses of natural gas for water heating make everything convenient. The efficient tankless water heater natural gas thoroughly can ensure low operating cost, low energy efficiency, and excellent long life performance.

Though it is the right decision to change your water heater from ordinary to tankless natural gas but it is hard to find the best. The are a variety of heaters are in the market. You will be happy to know that, I am going to guide you with few years’ experience that might help you.

Things To Consider Before Buying Best Tankless Water Heater Natural Gas

Choosing a perfect tankless water heater natural gas is not as easy as sound to use. There are over dozens of brands with multiple models that make confused. However, here are some remarkable facts and features that would guide to find the best.

Capacity And Water Flow Rate

Any water heater is not only for single purpose use. Sometimes you might use shower, kitchen or any other sites together. Doing few things together ask for high water flow rates as well as the capability to manage all of them. No matter for office or home you should choice a natural gas tankless water heater which can deliver for bathroom, kitchen even any top loaded washing machine. or similar home accessories.

Price And Budget

You might find the best features and facilities within your budget. Having in mind that best tankless water heater natural gas is usually more expensive than an ordinary electric heater. However, you should look at your expected features, not to the brands. Nowadays there are many persons are paying for brand name only.

Smoothness And Durability

It is one of the big decision to purchase and set up a tankless natural water heater gas. Moreover, it is expensive for initial investment as well as to continue. You should strongly consider the durability and smoothness for continuous long term use.


Features And Functions

A good product always presents good and effective features. It is one of the common thinking that the performance of a device depends on its features. However, a good tankless natural gas water heater includes some standard characteristic like high flow rate, LED light power display, low noise level, automatic operation, etc.


Safety is the primary consideration whether you plan to get one of this. Most often it 's hard to find the spot if anything happens with the gas line. You should focus your attention to the tankless natural gas water heater which has good safety systems as well as long time security.

Recommended Best Tankless Water Heater Natural Gas

Now we know the important of choosing a tankless water heater natural gas and some remarkable features that we should consider while taking purchasing decision. Still if you are confused then you are suggested to choice from recommended water heaters.

Rheem RTG-84DVLN 8.4 GPM Tankless Water Heater

Editor's Rating:

Forget the old days of keeping a 40 to 50-gallon tank of hot water in a storage tank for your bathing and ablution purposes.

Today, the world craves the ease and convenience of technology and Rheem is a company which intends to fuel this engine of technology with all latest features.

This Direct Tankless Water heater is certainly no expectation. A perfect solution to heating your water at home, it utilizes Natural gas for efficient heating at 8.4 gallons/min at a thirty-degree rise. This is more than ideal for most heating purposes. Welcome to a smooth design with embedded practicality. Welcome to an innovative tankless product that provides a continuous supply of hot water from an energy efficient and space saving design, both in and out. However, it has UMC-117 remote control and 10-Feet of thermostat wire that you can setup any suitable position.


  • Ease and convenience
  • Low energy consumption
  • Space saving design
  • Non stop waster supply 
  • Instant hot water 
  • Lon time durable 
  • Low Nox Version


  • Little expensive 

Technical Details:

  • Part Number: RTG-84DVLN
  • Weight: 54 pounds
  • Weight: 14 x 10 x 26 inches
  • Certification: ENERGY STAR
  • Power Source: Natural gas
Rinnai RC80iN Natural Gas Condensing Tankless Water Heater

Editor's Rating:

Technology is about choices, the best route in every progression. As such, a question arises, what is the best way to efficiently heat water?

The answer was utilized by Rinnai in their new product The RC80iN Natural Gas Condensing Tankless Water Heater which utilizes propane gas for instantly heating your water for your ease and luxury.

It features an Energy Star Qualified. A dedicated safety system which composes of leak detection, enhanced scale detection and Temperature Locks surety minimization of property damage in case of an emergency. 

Also it has been designed to be fully compatible with all Rinnai Digital Controllers giving you full access to all its features without ever leaving your seat or having to invest in another controller. Along with that, it also features to use for long years on the Heat Exchanger. So sit back, relax, and enjoy the luxury and convenience of hot water at your service.


  • High standard safety 
  • Energy Star Qualified
  • Digital Controllers
  • Long years on the Heat Exchanger
  • Significant Energy Savings
  • Multiple temperature setting 


  • Little costly for initial investment 

Technical Details:

  • Part Number: RC80iN
  • Weight: 73 pounds
  • Weight: 35 x 22.5 x 15.5 inches
  • Certification: energy_star
  • Residential Temperature Settings: 98°F - 140°F
  • Commercial Temperature Settings: 98°F - 185°F
  • Power Source: Natural gas
Takagi T-K4-IN-NG Tankless Water Heater, Natural Gas

Editor's Rating:

A 45% saving on the monthly gas bills sounds pretty appealing doesn’t it? That is entirely possible with the Takagi Indoor Tankless Water Heater with all the latest features.

At 13.8 inches wide and weighing only 38 pounds, its ultra-compact design allows it to be mounted sleekly onto a wall! Imagine that! Worried about the environment?

It’s efficient and environmentally friendly compact design will help put all your worries to rest as you enjoy the luxury of a warm bath and put your mind at rest. Since you will only be utilizing the water heater whenever hot water is needed, you will be saving up on approximately 45% of your monthly gas bills with many unique and ordinary features.

How sweet is that? And also at an energy rating of 0.82 and an 11000 to 190000 BTU, you can rest assured of its performance as being top Notch! And also with many years heat exchange surety as well as parts and labor surety, it is perfect for all people. It’s perfectly engineered design makes it prominent among other tankless water heaters


  • Environmentally friendly
  • Compact design
  • Long years heat exchange surety
  • Exhaust and water temperature safety control
  • Work on heavy duty


  • Not enough for industrial use

Technical Details:

  • Part Number: T-K4-IN-NG
  • Weight: 43 pounds
  • Weight: 8.5 x 13.8 x 20.5 inches
  • Certification: Energy Star
  • Color: White
  • Power Source: Natural gas

Rinnai V65IN 6.6 GPM Tankless Natural Gas Water Heater

Editor's Rating:

Technology is a never ending rampant struggle, bent on bringing the best tools to human beings, to make life ultimately simpler for them.

In that order, Rinnai never fails to appease us. Now, enjoy the convenience and comfort of continuous hot water at a lower price!.

It is a powerful tankless water heater natural has appliance which offers the best in safety too. However, it comes with an energy factor of 0.82 for both gas types along with thermistor controlled temperature controllers as well as maximum BTU's 150,000. Leak detection shuts off the water to limit property damage. It also employs enhanced scale detection to further dampen any threat to your property.

Along with that, temperature lock prevents accidental and unauthorized changes to the water temperature. This is best for your cabin or your home. It allows you the convenience of hot water at an extremely low price!


  • Convenience and comfort of continuous use
  • Multiple settings
  • Best for cabin or your home
  • High standard safety system
  • Leak detection shuts off
  • Max Energy Factor 0.82


  • Not good for industrial use

Technical Details:

  • Part Number: V65IN
  • Weight: 49.6 pounds
  • Weight: 13.9 x 8.8 x 23.6 inches
  • Power Source: Natural gas
  • Color: White
Takagi T-KJr2-IN-LP Indoor Tankless Water Heater

Editor's Rating:

Don't feel like shivering your way to work every morning because of the cold shower? Is that the worst part of the day?

Well not to worry because the Takagi Indoor Water Heater has you covered, an energy efficient water heater which packs a lot of punch and latest features. 

A 140000 BTU powerful punch! This will let you have instant hot water without spending immense energy. No more spending extreme amounts on your gas bills. The Takagi Water Heater will let you have hot water, whenever you want it. And if a 6.6 GPM flow rate wasn’t impressive enough with all the features you need.

Other than that, many years heat exchange assurance and parts surety has every user covered. This is perfect for light residential and Radiant heating applications.


  • Quiet and not noisy 
  • Energy efficient
  • Long years use assurance 
  • Impressive features
  • Constant temperature monitoring


  • Not for commercial use

Technical Details: 

  • Part Number: T-KJr2-IN-LP
  • Weight: 38 pounds
  • Weight: 6.7 x 13.8 x 20.3 inches
  • Power Source: Natural gas
  • Color: Liquid Propane
  • Certified: Energy Star

Final Verdict

Uses of natural gas is not a new idea but using for water heater is really unique and innovative. The tankless water heater natural gas is an energy efficient process that save your energy cost ans well as environment friendly. Although it has many benefits of the best tankless water heater natural gas but it is difficult to find the right one.

​We already show you a proper guideline that might help you. Unless following proper guide you may face wrong decision. However, still if you are confused then you can choice our recommended tankless water heater natural gas to keep everything clean and smooth

Jason Porter

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