Gas Tankless Water Heater

The tankless gas water heater is in demand in this era because the tankless gas water heaters that run on gas can save your bills. After all, in many places, gas rates are cheaper as compared to that of electricity.

To save you from any confusion in selecting a tankless gas water heater, we have set top-rated and highly selling tankless gas water heaters for you. Here is the list of the most effective and top-rated tankless gas water heaters or tankless natural gas water heaters.

Gas Tankless Water Heater Indoor

Image Product Details   Price
backpac Rinnai RU199iN Capacity: 11 Gpm
Color: Silver
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backpac Rheem RTG-95DVLN Capacity: 9.5 Gpm
Color: Silver
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backpac Rinnai V65IN Capacity: 6.5 Gpm
Color: White
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backpac Takagi T-H3M-DV-N Capacity: 6.6 Gpm
Color: White
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backpac Camplux 12L 3.18 GPM Indoor Tankless Natural Gas Water Capacity: 3.18 Gpm
Color: Black
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We have provided a list of the best tankless gas water heater on this website. The selection of a tankless gas water heater depends on how much water you have to use at home.

(1) Rinnai RUR199iN Tankless Water Heaters, RUR1 99in-Natural Gas/11 GPM

Rinnai rur 199iN comes first on the list of tankless gas water heaters. It has a good rating of 4.5 stars, and it comes in a sleek design that produces a good impression on the person.

It is 84 pounds, and it has dimensions of 22.05 x 14.76 x 33.86 inches. It does not require any batteries, and it uses 120v for its operation. Due to its sleek design, it saves space as compared to traditional heaters.

If you want to expand more for warm water for your home, this product is the best option. Rinnai, our 199in can be used for a whole house comfortably, and it is best for large homes or large apartments. It should keep in mind that a professional person or plumber should install this tankless water heater.

Features

It has the technology of ThermaCirc360. This technology is mainly used in Rinnai tankless gas water heaters. It provides hot water in less time or fastly with a built-in circulation pump, a thermal bypass valve, and a timer. Therefore it is good for home use without adding a return line. Due to this technology, consumers’ time is saved in this record. As a result, energy is saved, and it results in a reduction of a consumer bill.

Pros

  • With a larger capacity of 11 GPM, it is ideal for the usage of large homes.
  • It has five years warranty on parts.
  • It has ten years warranty on the heat exchanger

Cons

  • You have to purchase additional parts for connection to dedicated recirculation.
  • Its price is a little bit higher.

(2) Rheem RTG-95DVLN RTG-95

With 4.5 ratings, Rheem RTG-95dvln rtg-95 comes in second in the list of tankless gas water heaters. It has 54 pounds in weight. Its dimensions are 14 x 10 x 26 inches. It has a certification of energy star. For an average household and with a capacity of 9.5 gallons per minute, it will be enough.

Moreover, the need for warm water depends on how much water is used at home. As far as electrical need is concerned, it requires 120 v. This model requires no batteries. It requires a 1/2″ gas line. It has UMC-117 remote control for setting the operations. It is designed to install indoors. It comes in a grey color which is compatible with indoor.

Features:

Rheem RTG-95 DVLN has an energy star certification which means that it is fuel-efficient and it will use less gas than non-certified tankless gas water heaters. This will affect in reduction of consumers’ gas bills. Also, this product does not produce noise while running.

Pros

  • It has 12 years warranty on the heat exchanger, 5 years warranty on parts, and one year warranty on labor.

Cons

  • It may not use in the existing venting because Rheem RTG-95 DVLN requires special.

(3) Rinnai V65IN Tankless Water Heater, Large, V65iN-Natural Gas/6.5 GPM

It is another amazing product on the list. It is 45.6 pounds in weight, and it has dimensions of 14.04 x 9.27 x 26.9 inches with a capacity of 6.5 gallons per minute which means if you use 2 showers at a time, your consumption will be 5 gallons per minute or 5gpm and 1gpm water can utilize for sink purpose.

It requires 120 volts and 60 Hz electrical consumption. For this product, the Gas Supply requirement is 3/4 Inch MNPT and Cold Water Inlet is 3/4 Inch MNPT, and for  Hot, Water Outlet is 3/4 Inch MNPT.

Rinnai V 65IN is energy star certified which is a good thing for saving gas, and as a result, it will cause a low consumer gas bill in the end.  It comes in white color, which will look good when mounted on the wall. Remember that you always installed it from an authorized person or authorized plumber.

Pros

  • For distant control, it has provided an R 2.0 app for this purpose. With this app, you can control features like timers and schedules according to your requirements and put on vacation mode outside the home.
  • It is providing 10 years warranty on the heat exchanger and 12 months for labor warranty and 5 years warranty on parts

Cons

  • Not fit for commercial use

(4) Takagi T-H3M-DV-N Condensing Direct Vent Tankless Water Heater

This product comes in number four on our list. It is a product of Japan. Its capacity is 6.6 gallons per minute. So it means that it will be enough for two bathrooms in a warm climate or 1.5 baths in a cool climate. Basically, it depends according to the need for warm water.

Takagi T-H3M-DV-N has an energy star certification which is good for saving fuel. It is 49 pounds, and its dimensions are 17.75 x 13.12 x 29.5 inches. It has e energy star certification, which is good for saving fuel. It does not require typical batteries, but it needs electricity of 120 v for its operation.

Takagi T-H3M-DV-N is an indoor unit and should be installed after proper venting. It is flexible in using vents, i.e., it requires 3″ PVC venting for 70 feet or 4″ venting for up to 100 feet. Venting of category IV of stainless steel can also use in this product.

As far as the color of this product is concerned this product comes in white color.

Pros

  • It has included safety features like an air-fuel ratio (AFR) sensor, which mixes the air-fuel according to requirements.
  • It has an exhaust and water temperature control sensor and overheats cut-off fuse. The use of an overheat cut-off fuse is to disconnect or turn off the heater if water is too much warm.
  • It has an internal freeze protection system which means that its temperature is too cool that water starts freezing, then in that condition, it will avoid water to freeze inside it for the constant supply of warm water in the home.

Cons

  • It May not be helpful for commercial use of water

(5) Camplux 12L 3.18 GPM Indoor Tankless Natural Gas Water Heater

Camplus 12L 3.18 GPM indoor natural gas tankless water heater comes in number six on our list. It has a capacity of 3.18 gallons per minute which is good for the continuous flow of warm water. Its weight is 28.7 pounds,

It has a slim design, and the front panel has black glass provided with touchscreen control with a Fahrenheit display in digital. This device has a flame failure device, which immediately turns on the flame in the tankless water heater if the flame is cut off.

This unit has the safety feature of overheat protection, which means if the unit is heated, it avoids overheating further.

Its dimensions are 14.37 x 4.72 x 25.39 inches. The package also included fitting parts. It requires 120 v for pilot ignition. It is the wall-mounted type and comes in black color. This model for home use can save money and time.

It is grateful for the use of small homes or cabins. It is useful to provide an on-demand constant supply of warm water for up to 2 to 3 persons. This device is designed for indoor use. It uses standard 1/2 “water fittings and comes with a 2.3-inch horizontal venting pipe which allows quick installation of this product.

Pros

  • It has automatic temperature control with energy-saving mode
  • It also has child lock technology for protection
  • Its price is very affordable.
  • It has ant freezing protection which makes it good for use in cooler areas or snowy areas.

Cons

Gas Tankless Water Heater Outdoor

Image Product Details   Price
Our Recommendation (1) Rinnai V65eN Natural Gas Tankless Capacity: 6.5 Gpm
Color: White
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backpac Rinnai Outdoor Tankless Hot Water Heater / RL94eN / Natural Gas/ Capacity: 9.4 Gpm
Color: Silver
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backpac Noritz NR50ODNG Outdoor Tankless Water Heater, max. 120,000 Btuh Capacity: 5 Gpm
Color: White
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(1) Rinnai V65eN Natural Gas Tankless Hot Water Heater Outdoor, 6.5 GPM

Rinnai V65eN comes ist on our list for a continuous supply of warm water outdoor. It has an average rating of 4.6. It is 47.4 pounds, and its dimensions are 9.6 x 14 x 24.3 inches.

Features

It has an energy factor of 0.2; therefore this product is energy efficient. It provides optimal water pressure with 6.5 Gpm at a constant rate.

Pros

  • It has a scale detection which lets the user know the internal damage of the device.
  • It has a 10-year guarantee on heat exchanger, 5 years on labor, and one year on parts.

Cons

  • Not suitable for commercial use

(2) Rinnai Outdoor Tankless Hot Water Heater / RL94eN / Natural Gas/ 9.4 GPM

When the requirement for warm water is above average for outside usage, this product is perfect for yours. With a capacity of 9.4 Gpm, it provides warm water continuously. It is 44.2 pounds in weight, and its dimensions are 14.02 x 10 x 22.99 inches. This product requires 120 v for electrical ignition.

Features

It has circ-logic technology, which reduces the time for warm water to reach from unit to the point of usage so safe the energy this way.

Pros

  • It has a 10-year warranty on heat exchanger, 5 years on parts and one year on labor

Cons

(3) Noritz NR50ODNG Outdoor Tankless Water Heater, max. 120,000 Btuh, 5.0 Gpm

Noritz NR50ODNG is the final product on our list for outdoor usage. With a capacity of 5 Gpm, it supplies warm water without interruption. It is 33 pounds in weight and has mentions of 10.7 x 17.6 x 26.6 inches.

Pros

  • It emits low NOx or low greenhouse gases
  • This product is highly efficient

Cons

  • Not suitable for commercial use

Buyers Guide

Usually, using a shower simultaneously will require 2 gallons per minute or 2 GPM of water. Similarly, if you use a kitchen faucet, it will need 2 gallons per minute, and for a lavatory faucet, 0.5 gallons per minute or 0.5 GPM will be sufficient.

So if you use one shower, one kitchen faucet, and one lavatory faucet, you will need roughly 4.5 gallons per minute; by increasing the amounts of showers and faucets, warm water in gallons per minute increases. So this is the technique you have to use while selecting one of the best items from our tankless gas water heaters. Usually, small homes need less GPM, and big homes require large GPM numbers to select the tankless gas water heater.

Usually, many houses do not require a small amount or few gallons per minute of water. As the use of warm water increases with the increase of persons. Warm water demands increase with the increase of cold weather.

As far as the price of the tankless gas water heater is concerned, their price may be higher than the modern electric tankless water heater because vents are required for the tankless gas water heater. And the vents have to be installed before the installation of the tankless gas water heater. But there is an advantage of a tankless gas water heater over an electric tankless water heater: gas is cheaper in many areas than electricity.

If you use electricity for warm water, your electricity bill may come higher as the electricity prices are higher than the gas. The installation cost of a tankless gas water heater may be high, but it will be compensated when you receive low bills on gas compared to the electricity.

In the end, the thing most matters is that we have to save money and in case of using the tankless gas water heater or best tankless gas water heater we can save a lot of our amount in terms of using the warm water for the home.

Be careful while installing the vents because if the tankless gas water heater is installed near the living room and the vent is damaged, it can produce carbon monoxide, which is harmful gas for any person living in the home. 

One question can come to your mind that why electricity is used in the tankless gas water heater. The answer is that to start the flame and to turn on the pilot in a tankless gas water heater, ignition requires in tankless gas water heater; therefore, tankless gas water heaters use electricity. Most tankless gas water heaters use 120 v to turn on piolet or ignition purposes.

A tankless gas water heater’s installation cost may increase if you have no vents for it because tankless gas water heaters require vents for running and ventilation. The tankless gas water heater would be safe if it is installed properly therefore always install the gas water heater with the registered plumber.

When we compare the prices of tankless electric gas water heaters and tankless gas water heaters, we come to know that the price of tankless gas water heaters is usually higher than the tankless electric water heater. But tankless gas water heater is more economical in fuel efficiency because gas is cheaper than electricity in many areas. Also, tankless electric water heaters require electricity in kilowatts which can cause the result in higher electricity bills.

Now we understand the working of the tankless gas water heater or tankless natural gas water heater. The tankless gas water heater has basically vented in two ways, i.e., direct vent and power vent. So direct vent pulls air from the outside home, and it has two vents, one vent for intake purposes and one vent for exhaust purposes. After the combustion of natural the byproduct gases or poisonous gases is expelled outside through the exhaust vent. So there is no chance of harmful gases entering in-home or apartment. Due to these settings, tankless water heaters usually require less space than the traditional gas tank water heater.

On the other hand, a power vent requires only an exhaust vent, and it should be placed in a big area for the supply of a sufficient amount of air in the combustion chamber. It should be noted that tankless gas water heaters start work when water starts to flow through it because when water starts to flow through it, the sensor turns on the tankless gas water heater by igniting the gas pilot electrically, and then gas is burned in the combustion chamber till water warms after the water is warmed at specific temperature the sensor turnoff the tankless gas water heater. In this way, tankless gas water heaters work.

Efficiency is another most significant factor in the tankless gas water heater. As far as tankless gas water heater efficiency is concerned, most of the tankless gas water heaters or tankless natural gas water heaters are near or more than 95 percent efficient. Also, their lifespan is more than a traditional gas heater with a tank. So we don’t have to worry about more fuel loss in a tankless gas water heater.

For additional safety in tankless gas water heaters, A5 concentric vents can be applied for this purpose because the A5 concentric vent contains both incoming and outgoing pipes. So if any case gas leakage occurs, the gas will remain in the vent and cannot come out from the vent and cannot enter the home.

Another important factor while installing the tankless gas water heater is that always install the tankless gas water heater from a professional or certified plumber because if it is installed improperly, gas leakage may occur in the home in case of indoor tankless gas water heater, which can cause suffocation also warranty may void in case of installing it from unauthorized person.

Normally the need for warm water also depends on the climate or temperature. Because if climate or temperature is warm, people use less amount of warm water, on the other hand, if the temperature or climate outside is cool. Of course, the need for warm water increases, and warm water is used in a large quantity than the normal days.

Gas tankless water heater installation cost

Depending upon the factors like GPM the gas tankless water heater installation cost may reach from 600$ to 2400$.

Conclusion

We have tried our best to provide you with one of the best tankless gas water heaters. Usually, their life is longer than conventional tank gas heaters. The need for a tankless gas heater depends upon the usage of warm water and another factor that is cost.

If you have to use warm water in large quantities, then Rinnai rur 199IN is the best option because it has 11 gallons per minute to provide a continuous supply of warm water for the whole house. Its initial cost may be slightly higher with installation, but you will be satisfied with the results in the end.

On the other hand, if warm water usage is moderate, i.e., not less or more, then Rinnai V65IN tankless gas water heater is the best option. It has a capacity of 6.5 gallons per minute or 6.5 GPM for a constant and endless supply of warm water in-home or apartment.

Similarly, if you have to use warm water in a small amount, then Camplux 12L tankless gas water heater is best, with a capacity of 3.18 GPM or gallon per minute. For a small amount of water for the home, this product is the best on our list.