Natural Gas Tankless Water Heaters

Are you got stuck with choosing a natural gas tankless water heater for your house?

Are you confused about choosing between natural gas tankless water heaters and electric tankless water heaters? Then you are on the perfect platform. We will answer your questions.

We have searched for natural gas tankless water heaters. We assure you that natural gas tankless water heaters are a money-saving product. We know that they cost more for installation, but they will save your money from burning over monthly bills. They will save $100+ than any other heaters.

Instead of using electric and propane water heaters, you should use natural gas tankless water heater because they will provide you with more GPM than any of these tankless water heaters.

Before sharing the list of these natural gas tankless water heaters, we will share some vital information about which features will help you to find a good natural gas tankless water heater.

Few features which should be available in good gas tankless water heaters are:

Leakage protection:

As you know, gas-leakage can cause serious harm to you. Every gas heater must have leakage protection that will save you from serious-harms.

GPM (Gallon per minute):

We don’t think that anyone of us would like to run out of hot water supply during the shower. You should check out the GPM of every water heater you select.

GPM is a hot water supply per minute.

Anti-freezing protection:

If you use these water heaters in a cold and freezing climate, you should check out these protection in your selected water heaters.

Energy-factor:

Energy factor is a term that describes the usage of energy. If any gas heater has a 0.8 EF rating, it means that the gas heater uses 80% of natural gas, and the other 20% shows energy loss. The average Energy-factor of any gas heater will be 0.8 to 0.9 EF rating. The maximum Energy-factor will be 0.9 with 10% of energy loss.

  1. Takagi T-H3-DV-N natural gas tankless water heater
  2. Rinnai RUC98iN Ultra Series natural gas tankless water heater
  3. Rinnai RUR98iN Ultra Series natural gas tankless water heater
  4. Noritz NRC6661-DV-NG natural gas tankless water heater
  5. Eccotemp fvi12-NG FVI-12 Natural Gas tankless water heater
  6. Rinnai V94IN natural gas tankless water heater
  7. GASLAND BE158 natural gas tankless water heater
  8. Rheem RTG-95DVLN natural gas tankless water heater
  9. Complicated WA686 outdoor natural gas tankless water heater
  10. Eccotemp i12-NG natural gas tankless water heater

Takagi T-H3-DV-N

Natural Gas Tankless Water Heaters

Qualities:

Company: Takagi

Model No: T-H3-DV-N

Weight: 59 pounds

Voltage:120 Volts

Dimensions: 10.75 x 17.75 x 22.5 inches

Colour: white

Gallon per minute: 10 GPM

Available on: Amazon

Product Description:

                                         The product Takagi T-H3-DV-N has the highest GPM of all the products on our list. We had added this product to our inventory based on its great GPM.

These tankless gas water heaters required input energy of about 199,000 BTU. The Takagi T-H3-DV-N is a natural gas-powered tankless water heater. As the right guider, we will recommend this product if you have a big family. Takagi had the highest GPM on our list. It will never run out of water. This product’s uniform energy factor is 0.93 average uniform energy factor of tankless gas water heaters is 0.82.

Tankless water heaters are ten times smaller than any tanked water heaters. They had a large tank which consumes more space. Every customer chose tankless water because they had less space. Takagi has a size of a small suitcase it can be adjusted anywhere in your house.

The heat exchanger of Takagi is made up of stainless and copper. Copper is a good conductor of heat. It can maintain your heater. Water heaters have safety devices, including a condensate overflow sensor, flame sensor, lightning protection machine, freeze protection device, and overheat prevention device.

It has a stylish design which temperature control buttons. It has a digital temperature display. It requires 120 volts. It can run four showers in a warmer climate and three batteries in colder weather.

It has an ultra-low emission of NOx, which increases the uniform energy factor of this product. Takagi is the indoor water heater. It is fantastic for close houses.

Pros & Cons

Pros
  • It has the highest GPM of 10.

  • It has an Ultra-low emission of NOx.

  • It has a 0.93 uniform energy factor.

  • Its maximum input is 199,000BTU’s.

  • Its heat exchanger is made of copper and stainless.

  • Almost four showers can run with this heater.

Cons
  • It is expensive.

  • Its GPM may change in a colder climate.

Rinnai RUC98iN Ultra Series

Natural Gas Tankless Water Heaters

Qualities:

Company: Rinnai

Model No: RUC98iN Ultra Series

Weight: 82 pounds 

Dimensions: 10 x 18.5 x 26 inches

Colour: white

Gallon per minute: 9.8 GPM

Available on: Amazon

Product Description:

                                   The products Rinnai series had high ratings on Amazon and these products are beautiful and comfortable to design. As you know, tankless water heaters are trending now so. We are here to give you a choice between the top 10 tankless natural gas heaters.

Rinnai RUC98iN Ultra Series is an energy-efficient water heater. It has an energy factor of Up to 0.96. The Uniform energy factor is Up to 0.92. Most natural gas heaters have a maximum energy factor up to 0.80, but Rinnai has an energy factor above 0.90, a fantastic feature. The Rinnai tankless gas water heater Ultra-low NOx emissions (as compared to water heaters with tanks). It uses less energy because it cut out NOx emissions. This tankless water heater’s average life expectancy is 20 years, which is much better than only 8-10 years of a traditional tank water heater. It has a Gas Input rate of 15,200 – 199,000 BTUs.

This water heater has 95% Thermal Efficiency. Thermal efficiency is the heater’s ratio in the given heat energy so, Rinnai tankless gas water heater can use 95% of its life for providing you with hot water. It has a temperature range of 98° F to 140° F at the Residential level and a Temperature Range of 98° F to 185° F at the Commercial level. It has safety devices for flame failure, boiling protection, current thermal fuse, glass fuse, and combustion fans. These protections are extraordinary. It will assure the safety of your family.

It will never run out of hot water because the maximum Gallon per minute of this tankless water heater is 9.8 GPM. If you have a big family, it will be a good option because 9.8 GPM is impressive for household use. This hot water capacity is awe-inspiring because you can’t find this huge capacity in electric tankless water heaters. Your trusted Rinnai Tankless water heaters provide you best services.

As you know, you choose tankless water because you want to save extra space or you have space issues. It has a compact design that can keep your area. You can hang it on a wall.

Pros & Cons

Pros
  •  Its maximum energy factor is 0.96.

  • Its flow rate is 9.8 gallons per minute.

  • It has a digital temperature display with buttons on it.

  • The temperature Range is 98° F to 140° F.

  • Its input power is 15,200 – 199,000 BTUs per hour.

  • It has low NOx emission levels.

  • Indoor installation, with twin pipe.

Cons
  • Customers have issues with the automatic temperature controlling system, but you can control the temperature manually too.

Rinnai RUR98iN Ultra Series

Natural Gas Tankless Water Heaters

Qualities

Company: Rinnai

Model No: RUR98iN Ultra Series

Weight: 82 pounds

Dimensions: 14.04 x 9.27 x 26.9 inches

Colour: white

Voltage: 120 volts

Gas Rate Input BTU’s: 15,200 – 199,000BTU’s

Gallon per minute: 9.8 GPM

Available on: Amazon

Product description:

According to the high GPM, this product has an excellent rating and reviews. Rinnai RUR98iN Ultra Series has impressive features. First of all, we will discuss the energy factor of Rinnai RUR98iN is 0.96. it is the maximum energy efficiency of these products.

Rinnai has condensing technology features dual heat exchangers to provide maximum efficiency. 0.96 is the ideal and fantastic energy efficiency. It means 96% of the energy will be used in heating water for your needs.

As you know, tankless water heaters are best for space-saving. They have a small and compact design with beautiful features. Indoor water heaters must be small because they can save extra space than a traditional tanked water heater. Rinnai RUR98iN has a length of a small suitcase. It can fit anywhere in your house.

The activation or startup energy of this product is 15,200 – 199,000BTU’s. It is the minimum energy required for every gas tankless water heater. It requires 120volts of electricity or battery for its electronic condensing technology.

The most impressive part of this product is it will never run out of hot water. It has a maximum of 9.8GPM, which is the ideal GPM for every gas tankless water heater. GPM is the gallon per minute water supply of hot water. If you had a large family, you should give a try this product. I hope it will meet your water needs.

Pros & Cons

Pros
  • It has the size of a small suitcase.

  • It has an excellent flow rate of 9.8 GPM.

  • It is suitable for large houses.

  • It has condensing technology, which increases energy efficiency.

  • It has low NOx emissions.

  • It is WiFi capable.

Cons
  • It is expensive, but it has fantastic qualities. 

Noritz NRC6661-DV-NG

Natural Gas Tankless Water Heaters

Qualities

Company: Noritz

Model No: NRC6661-DV-NG

flow rate:6.6GPM

Energy efficiency: 92%

height:23.6inches

weight: 18.3inches

maximum output:120000BTU

minimum input:15000BTU

Voltage: 120volts

uniform energy factor: 0.89

Available on: Amazon

Product Description:

The Noritz NRC661 tankless water heater works with natural gas. This compactly composed water heater can be installed in many places. You can manage multiple baths plus devices together. Noritz NRC661 is highly efficient and compact designed to save on your energy bill.

Its maximum output power is 120000BTU per hour. Noritz NRC661-DV-NG water heaters have safety devices, including a condensate overflow sensor, flame sensor, lightning protection machine, freeze protection device, and overheat prevention device. All these have five-year parts warranty.

These products have a restore heat exchanger, double flame heater, and 25% denser copper piping. No other tankless water heater in its category can strike its achievement, dependability, work, and feature. The active-connect order also allows many heaters to be joined and worked by the same controller system for enhanced hot water needs.

All of this functionality and ability is seamlessly supported by a self-diagnostic network system and digital remote, assuring there is always perfect non-varying hot water for everyone to use.

It is a less costly, durable, comfortable, and PVC vented installation tankless water heater.

Pros & Cons

Pros
  • High-efficiency low NOx Eco-Burner reduces discharges.

  • It has a uniform energy factor of 0.82 and direct electronic ignition.

  • Its maximum output power is 120000BTU.

  • Easy to install and indoor installation.

  • It has safety devices, including a condensate overflow sensor, flame sensor,

  • lightning protection machine, freeze protection device and overheat prevention

  • device.

  • Noritz NRC6661-DV-NG is Natural gas tankless water heater.

Cons
  • Its installation is only for indoor use.

Eccotemp fvi12-NG FVI-12 Natural Gas

Natural Gas Tankless Water Heaters

Qualities

Company: Eccotemp

Model number: FVi12-NG

flow rate: 3.4GMP

Energy efficiency: 79%

Product Dimension: 6*15.5*25 Inches

Item Weight: 33 pounds

Colour: White

Gas Rate: 25,000 to 74,500 BTUs

Voltage: 120 volts

Available: Amazon

Product Description:

The Eccotemp fvi12-NG FVI-12 is one of the most reliable units in the natural gas class. Eccotemp water heaters have many attractive specialities. This is suitable for small and medium homes. It is useful for cottages and vacation cabins. This unit is working with natural gas and liquid propane. Eccotemp is an indoor tankless water heater.

The Eccotemp FVI12 water heater has been used at elevations up to 2000 feet. Installation of the Eccotemp FVI12 other than 2000 feet may infect overall product achievement and performance. Installation of the Eccotemp FVI12 greater than 5000 feet is not suggesting.

Eccotemp is a digital heat display on a compact and space-saving device with the least noise product. The product must be installed near a standard household 120-volt plug as it’ll use electrical energy to work the inside exhaust fan and digital performance. It’ll use 10 watts when working and 2 watts when empty. A stainless iron horizontal vent kit is involved. But, a vertical kit is available if required. This water heater can give 3.4 GPM of hot water on a routine basis Eccotemp system has useful heating elements. While water is crossing through the system, there is an endless supply of hot water.

The flow rate of water finds out the quantity of hot water that can be produced. The components are more efficient than the conventional water heater. So you don’t worry about hot water.

Pros & Cons

Pros
  • It has a horizontal and vertical vent kit.

  • Eccotemp tankless water heater is an energy-saving and space-saving unit.

  • You require no worker to install this unit. You can install this heater to an upward space or a wall in your house.

  • This is secured, more efficient, and best for small homes and cabins.

  • Accurate temperature and water flow arrangement

Cons
  • Capacity may be too little for some customers.

  • Users prescribed to flushing every three months

Rinnai V94IN

Natural Gas Tankless Water Heaters

Qualities:

Company: Rinnai

Model No: V94IN

Weight: 46.3 pounds

Dimensions: 14.04 x 9.27 x 26.9 inches

Colour: white

Gallon per minute: 9.8 GPM

Available on: Amazon

Product Description:

Rinnai is the top seller on Amazon for gas tankless water heaters. Its products have high reviews and ratings. That’s why we have added a few products of Rinnai to our list.

The 1st and the best product on our list are Rinnai V94IN. Let’s discuss its features and quality. Use 40% less energy than traditional tank water heaters because you heat water only when you need hot water.

Rinnai V94IN is an energy-efficient water heater. It has an energy factor of about 0.82. The Uniform energy factor will be 0.81. Efficiency packaged in a compact design that cuts out CO2 emissions (compared to water heaters with tanks), uses less energy and conserves water. Every part of this Rinnai Tankless water heater is replaceable, so you can easily replace its functions. This tankless water heater’s average life expectancy is 20 years, which is much better than only 8-10 years of a traditional tank water heater.

It has smart technological advancements such as WiFi monitoring, which can monitor your tankless water heater’s efficiency and address issues before you experience a break in service. Your trusted Rinnai Tankless water heaters provide you best assistance. As you know, you choose tankless water because you want to save extra space or you have space issues. It keeps 16 sq. Its compact design allows for installation in non-traditional spaces.

It will never run out of hot water because the maximum Gallon per minute of this tankless water heater is 9.8 GPM. This hot water capacity is awe-inspiring because you can’t find this huge capacity in electric tankless water heaters.

While you are waiting for hot water to travel from your tank to your shower, you can waste 16 to 20 bottles of water every time that means an average is about 8,700 bottles of water per person per year. It has safety devices for flame failure, boiling protection, current thermal fuse, glass fuse, and combustion fans.

Pros & Cons

Pros
  • Pros:

  • It has a uniform energy factor of 0.82 and direct electronic ignition.

  • Its flow rate is 9.8 gallons per minute.

  • Easy to install and indoor installation.

  • It has safety devices, including a flame failure, boiling protection, current thermal fuse, glass fuse, and combustion fans.

  • Efficiency packaged in a compact design that cut out CO2 emissions.

Cons
  • Its installation is a little expensive, but it can save more than $100 yearly.

GASLAND BE158

Natural Gas Tankless Water Heaters

Qualities: 

Company: GASLAND

Model No: BE158

Weight: 15.71 pounds

Dimensions: 11.8 x 6.1 x 17.3 inches

Colour: white

Gallon per minute: 1.58 GPM

Available on: Amazon

Product Description:

The GASLAND BE158 is one of the most reliable units in the natural gas tankless water heaters class. GASLAND water heaters have many attractive specialities. This product has a lightweight and compact structure. It has 11.5% energy-saving technology. Natural gas water heaters are designed with advanced combustion technology, which can decrease burning noise and gas consumption. It will save energy and reduce your bills.

The product has a maximum power output of 41,000BTU/Hr. No need to preheat before using a tankless water heater because it can maintain temperature. It will provide you with the water flow with your desired temperature as soon as you turn on the tap. It has a low water pressure startup, and it just needs 2.5 PSI of water pressure. It has a capacity of 1.58 gallons per minute of hot water. It has Fully adjustable water flow and heat. You can get instant, endless hot water quickly with this tankless gas water heater.

It is a portable tankless water heater. Also, you can wash your pets with this tankless water heater outdoor. Hang it using the mounting bracket on the back of the gas water heater. It only takes you a few minutes to install anywhere in your house or outside the home. It can bring a fantastic hot shower for you when you are camping because it is a portable water heater.

It has protection devices, for example, anti-freezing protection, Flame failure device, overheating protection to ensure family safety. It can automatically decrease water pressure between 2.5-110PSI. The anti-freezing device has a drain plug that can discharge the residual water to avoid freezing in cold areas. It has high water temperature protection over 167 °F because over-heating can be dangerous. It can shut off gas supply automatically under unexpected flameout to ensure your safety.

It has a digital temperature display which’s why you need to add a battery cell of lithium-ion. The components are more efficient than the conventional water heater. So, don’t worry about hot water.

Pros & Cons

Pros
  • It has high water temperature protection of over 167 °F

  • Its flow rate is 1.58 gallons per minute.

  • It just needs 2.5 PSI of water pressure to start up.

  • Easy to install and indoor installation.

  • It has safety devices, including anti-freezing protection, Flame failure device, and overheating protection.

  • It has 11.5% energy-saving technology.

Cons
  • Most customers have a problem with low GPM; if you are looking for a high GPM product, you can see Rinnai V94IN indoor from the list.

Rheem RTGH-95DVLN

Natural Gas Tankless Water Heaters

Qualities:

Company: Rheem

Model No: RTGH-95DVLN

Weight: 79 pounds 

Dimensions: 18.5 x 9.75 x 27.5 inches

Colour: white

Gallon per minute: 9.5 GPM

Available on: Amazon

Product Description:

                                         Rheem RTGH-95DVLN has the best rating on Amazon. We can consider it as one of the best products of a tankless gas water heater. First of all, we discuss the energy factor of Rheem RTGH-95DVLN. It has a uniform energy factor of 0.92 and an energy efficiency is 0.94.

The energy efficiency of this product is 94%. It means this product us 94% of energy and 6% of the total energy is wasted. In most of the products, we had found less than 90% energy efficiency. Rheem RTGH-95DVLN has outstanding energy efficiency. That’s why it works well.

We know that if you are looking for tankless water heaters, you must have space. As you know, a tank water heater requires an extra hole for the tank, but these tankless water heaters are beneficial for saving space in your houses. This tankless gas water heater saves space because it has a compact design and a small but beautiful body.

It will never run out of hot water. Its maximum hot water supply is 9.5 GPM. It is the ideal GPM for any tankless water heater because it has no tank for storage. As compared to the Tankless electric water heater, these heaters have high GMP. Its condensing heat exchanger is made from stainless steel, which is the energy efficiency coefficient. This heater has electronic controls, which are specially designed to increase the heater’s energy efficiency and safety. This heater has low NOx emission so. You do not need to worry about any harmful or dangerous emissions.

Pros & Cons

Pros
  • It has 94% energy efficiency.

  • It has anti-freezing protection.

  • It has low NOx emissions.

  • Its condensing heat exchanger is made from stainless steel.

  • It has 9.5 GMP, provide you with endless hot water.

  • It has a digital display and electronic controls.

Cons
  • It has a low startup flow.

  • It is a bit noisy.

Complex WA686 outdoor gas water heater

Qualities:

Company: Complex

Model No: WA686

Weight: 49.7Ib

Dimensions: :15.55 x 6.50 x 22.64 inches

Colour: Multicolor

Gallon per minute: 6.86 GPM

Voltage: 120volt

Energy Factor: 0.82

Available on: Amazon

Product Description:

Complex WA686 is an outdoor tankless water heater beautiful and comfortable design. It is excellent for whole-house use. It provides more than two hot water applications at the same time. It is flow rate is 6.86 GPM, WA686 can provide hot-water for typical two bathrooms, three bedrooms.

It has a Constant Temperature Function, which helps you safe experience clean, hot water at a consistent pre-set temperature Camplux water heater, new multiple protection systems, and contemporary combustion technology to ensure your outdoor security installation; there is no additional vent pipe requires.

The complicated tankless propane water heater was not approving for altitude more than 2000 ft. Anti-freezing safety project, which heats automatically when the temperature below 40 degree. Its power output is 180,000btu/hour. Complex WA686 water heater only works with an energy factor of 0.82 for natural gas when used. For environmental safety, Low NOx emission levels are 9.5ppm.

The natural gas pressure is 1.5-2.6kPa/0.22-0.38 Psi, Available temperature is 99F-140F. Useful, Secure Installation – you can get hot water after a few minutes. It has a digital remote control with a 3.3feet wire for suitable flow control.

Pros & Cons

Pros
  • Its maximum energy factor is 0.82.

  • 6.86 gallons per minute is its flow rate.

  • It has a digital remote control with a 3.3ft remote control wire.

  • Its startup flow rate is 0.79 gallon per minute.

  • Its gas pressure is 1.5-2.6kPa/0.22-0.38 psi.

  • Available temperature is 99º F(37℃)-140º F(60℃).

  • Its output power is 180,000 BTU per hour.

  • It has low NOx emission levels,

  • Outdoor installation, no additional pipe required.

  • 120volt power supply, CSA certified for US and Canadian use.

Cons
  • Complex WA686 heater line is not suitable for elevation more than 2000 ft.

  • It is only for outdoor installation.

Eccotemp i12-NG natural gas tankless water heater

Natural Gas Tankless Water Heaters

Qualities

Company: Eccotemp

Model number: i12-NG

flow rate: 4.8 GPM

Energy efficiency: 79%

Product Dimension: 17 x 29 x 11 inches

Item Weight: 28.8 pounds

Colour: black

Gas Rate: 25,000 – 80,000 BTUs

Voltage: 120 volts

Available: Amazon

Product Description:

Eccotemp company had a verity of products this company had electric gas and propane all types of products. These products have high ratings and good reviews. Here we will discuss the features in detail.

Eccotemp i12 has a maximum gas rate of about 25,000 – 80,000 BTUs. Every gas heater requires this gas rate as an activation gas rate. Its energy efficiency is 79%, which means it uses 79% of its heating water energy. It requires 120 volts for the digital display.

It will never run out of water. If you had a family of 4 to 5 members, it would be a perfect and compatible water heater for your house. It has a maximum of 4.8 GPM. Its activation flow of water will be 3GPM. We will guide you as a real helper. This product can’t help you with a big family or large houses. This product has a fantastic feature that activates only on demand. No pilot light is needed, reducing energy consumption.

It has an entirely digital system that works with electricity. Its Features fully automatic temperature controls with an energy-saving mode. It has an electronic child lock technology; it will save your family. The Eccotemp i12-NG comes with a horizontal stainless steel vent kit, which is ready to install. The Eccotemp i12-NG offers a 35-40 °F temperature rise when operating at a flow rate of 3 GPM. 77- °F temperature rise will provide you with 1.5 GPM.

As you know, indoor tankless water should have a small size. Tankless water heaters are excellent and short in length. Their maximum size is about a small suitcase, which can fit anywhere in your houses like cabins, cottages, and smaller homes. This product features a sleek black glass casing, fully automatic temperature controls, LCD temperature display, and a touch screen. The presentation of this product shows temperature and GPM on LCD.

Pros & Cons

Pros
  • It has a maximum gas rate of about 25,000 – 80,000 BTUs.

  • It has a sleek black glass casing, fully automatic temperature controls, an LCD temperature display, and a touch screen.

  • It’s The display of this product shows temperature and GPM on LCD.

  • It has a maximum of 4.8 GPM.

  • It has electronic child-lock technology.

Cons
  • It has a low GPM.

  • It cannot work for prominent families.

FAQ’s

Qno.1- Discuss the comparison between gas and electric tankless water heaters?

Features Electric tankless water heater Gas tankless water heater
 

Energy Efficiency:

 

Up to 0.89 EF

 

Up to 0.83 EF

 

Unit Cost:

 

$500-$700

 

$1,000-$1,200

 

GPM

At least 3.5 & max 9.5 GPM At least 8 & max 20 GPM
 

Warranty

 

6 to 10 years

 

9 to 12 years

 

Digital display

 

Available

 

Available

     

 

Qno.2- Are indoor gas water heaters are safe?

Firstly, you must have to choose indoor gas water heaters and read the precautions carefully. As a guide, I will recommend that you must have ventilation around your gas heater. Some times gas leakage can be hazardous for your house and family. Be careful about ventilation.

Qno.3- Comparison between tankless and tanked water heaters?

As you know, tankless water heaters do not require extra or larger space. On the other side, a tanked water heater requires considerable distance. They need a five times larger area than any tankless water heater.

Qno.4- which one heater you recommend between natural gas and propane?

Both gases have the same working, but their cost may vary according to your country cost charts. So, we cannot recommend any one of these.

 Qno.5- list a few cons of gas tankless water heaters?

They are Expensive.

They require ventilation even if they are indoor water heaters.

They require electricity for digital display.

Add a Comment

Your email address will not be published. Required fields are marked *