Rinnai Tankless Water Heaters

Electric vs. Gas Tankless Water Heater – Which One Is Better?

If you are looking to buy a tankless water heater and finding it difficult to choose between an electric vs. gas tankless water heater, then you’ve come to the right place! Because we will give you all the information you need to make a decision on which is the best water heater to buy.

This review was put together to make sure you do not buy a tankless water heater you will regret later. A heater is very important in homes, especially during winter, and water heating is the second-highest expense in homes.

Nevertheless, picking the right heater, being electric or gas, will save you money and ensure your comfort. Even more, most people are replacing traditional water heaters with tankless water heater models.

Now, there are different models of tankless water heaters for different people and you have to buy the right one. Which is why we’ll provide you reviews for the best tankless water heaters that are currently available right now.

But first, let’s talk about the differences between an electric and gas tankless water heater…

Electric vs. Gas Tankless Water Heater – Differences and Benefits of Both

The best way to choose between an electric vs. gas water heater is to know their difference and benefits:

  • Fuel – While the electric water heater uses electricity, the gas water heater runs on gas. However, there are two types: The first uses natural gas, while the second uses propane gas. Moreover, the type of gas water heater to buy depends on the type of gas available in your home.
  • Power – Gas is usually cheaper than electricity and the power available in your home determines the model you will buy.
  • Initial cost – Admittedly, electric water heaters are cheaper than their gas rival. A normal sized electric water heater cost around $700, while its gas equivalent cost between $1000 and $1800.
  • Installation cost – In addition, the cost of installing a tankless water heater is cheaper in a custom-built house with vital connections. But, when replacing traditional water heaters with electric or gas water heaters is more expensive. Electric tankless water heaters always have lustrous designs, which makes them very easy to install anywhere in the house. They are cheaper to install, except when replacing a traditional water heater. Conversely, gas tankless water heaters are pricey to install. Ventilation, drain pan and other requirements makes it pricey. Installing a gas tankless water heater in a house can be expensive too. However, to reduce cost, install your tankless water heater outside.
  • Operating cost – A gas tankless water heater is cheaper to operate since gas is cheaper than electricity. So, you will save more when you install a gas-fueled tankless water heater.
  • The flow rate and water supply – The constant supply of hot water is the reason why you need to buy an electric tankless water heater. Electric tankless water heaters supply up to 5 gallons of hot water per minute, which will serve a small family. On the other hand, Gas-fueled tankless water heaters are suitable for large families. It supplies between 8 to 10 gallons of hot water per minute at a very fast rate. Be aware that the climate affects the flow rates. Tankless water heaters in cold regions have a lower flow rate than warm regions.

That being said, let’s take a look at the top tankless water heaters that are currently available right now:

Top Tankless Water Heaters Available

1. Takagi T-KJr2-IN-LPG Tankless Water Heater (Propane)

Takagi T-KJr2-IN-LP Indoor Tankless Water Heater Review

The name Takagi is a popular brand in tankless water heater products. They have a wide range of exceptional tankless water heaters. This compact water heater will effectively replace traditional water heaters. Takagi T-KJr2-IN-LP is energy-efficient and comes with an energy factor of 0.81 to 0.83, unlike Stiebel Tempra 24 Plus which has 0.99.

This water heater model weighs 37.7 pounds with a dimension of 6.7 x 13.8 x 20.3 inches, while the Stiebel Tempra 24 Plus weighs 16.1 pounds and has 21.7 x 20.1 x 9.7 inches dimension. Also, it runs on propane and has a voltage of 120 volts. For reassurance, the manufacturer offer buyers a 10 year warranty for the heat exchanger and 5 years for parts. It has an excellent venting system, reliable, safe and cost-effective.

The Features

  • BTU – British thermal unit, minimum of 19,500 and maximum of 140,000.
  • Vent type – Direct vent connection to a stainless steel venting.
  • Fuel – It runs on propane gas, unlike Stiebel Tempra 24 Plus which uses electricity.
  • Water connection – At the bottom which allows for easy connection of the water pipes.
  • Flow rate – It features a maximum flow rate of 6.6 gallons per minute, while Stiebel Tempra 24 Plus has 2.8 GPM which can change automatically.
  • Thermistor – it has an outlet and inlet thermistor to monitor and regulate temperature.

Who Is It For?

Just like the Takagi T-KJr2-IN-NG model, it is best for small families with low hot water needs.

Verdict

The Takagi T-KJr2-IN-LP propane tankless water heater is compact and can fit anywhere indoors. However, it has a low flow rate and runs on propane, which is cheaper. Finally, it requires outdoor venting because it runs on gas. With a flow rate of 6.6 GPM, the heating capacity might suffer.

Where To Buy?

Takagi T-KJr2-IN-LP Propane is available on Amazon. You can get yours here.

2. Takagi T-KJr2-IN-NG Indoor Tankless Water Heater (Natural gas)

Takagi T-KJr2-IN-NG Indoor Tankless Water Heater Review

The Takagi T-KJr2-IN-NG is also a compact model like the previous model, Takagi T-KJr2-IN-LP. It features an automatic thermistor for temperature regulations.

The air-fuel ratio sensor, is a feature we do not see in the Stiebel Tempra 24 Plus model. Also, it has other safety features missing in the Stiebel Tempra 24 Plus, which include: Freeze protection, surge protection, and digital meter protection.

The Takagi T-KJr2-IN-NG water heater weighs 38 pounds and has the same dimension like the Takagi T-KJr2-IN-LP model: 6.7 x 13.8 x 20.3 inches. Also, like Stiebel Tempra 24 Plus electric model, this model is energy star certified with a voltage of 120 volts.

The Features

  • BTU –It comes with a British Thermal Unit with a minimum of 19,500 and maximum of 140,000.
  • Vent type – Direct vent connection to a stainless steel venting.
  • Energy factor – An energy factor of 0.81 – 0.83.
  • Fuel – It runs on natural gas, unlike the Stiebel Tempra 24 Plus model which uses electricity.
  • Water connection – At the bottom which allows for easy connection of the water pipes.
  • Flow rate – It has a maximum flow rate of 6.6 gallons per minute.
  • Thermistor – It has an outlet and inlet thermistor to regulate and monitor the water temperature constantly.

Who Is It For?

It is designed for small families with low hot water supply needs.

Verdict

The Takagi T-KJr2-IN-NG natural gas water heater is installed indoors and requires outdoor venting, unlike the Stiebel Tempra 24 Plus model which does not. This affects the installation cost, which could be almost as high as the heater itself. It is eco-friendly and is good for the environment. A higher flow rate affects the heating of water.

Where To Buy?

The Takagi T-KJr2-IN-NG natural gas model is available on Amazon. You can get yours here.

3. Stiebel Eltron 224199 240v electric water heater (Advanced flow control)

Stiebel Eltron 224199 240v Electric Water Heater Review

Continuing with our electric vs gas tankless water heater review, the Stiebel Eltron 224199 240v compensates for one downside in gas tankless water heaters. The Takagi T-KJr2-IN-LP model has a higher flow rate compared to the Stiebel Eltron 224199 240v with a flow rate of 2.8 GPM.

This electric model comes with an advanced flow control, which is the main feature of this heater. The technology ensures that water temperature remains constant at any flow rate. Also, it’s a 24KW heater model with a microprocessor temperature regulation and digital display.

It’s suitable for cold regions with low water temperatures. The dial selector in this heater model is used to select water temperatures between (86 and 140F). It requires no venting, unlike the Takagi T-KJr2-IN-LP gas model.

The Features

  • Weight – It weighs 16.1 pounds.
  • Dimension – It has a dimension of 21.7 x 20.1 x 9.7 inches.
  • Voltage – The voltage of this model is between 240 to 208 volts maximum.
  • Wattage – This heater has a maximum of 18000 watts.
  • Warranty – This product comes with 3 years parts and 7 years leakage warranty.
  • Thermostat – This product automatically controls temperature using a thermostat based on incoming and water and flow rate.
  • Digital display – It comes with a digital display for the temperature.
  • Advanced Flow Control – This technology uses a sensor to detect a change of flow in water and adjusts based on your needs.

Who Is It For?

The Stiebel Tempra 24 Plus is ideal for high flow demands, most commercially and where the flow rate is unpredictable. It can be installed in large homes with high hot water supply needs.

Verdict

It’s a perfect tankless water heater and has a big edge over the Takagi T-KJr2-IN-LP gas water heater. However, the installation is quite high for licensed personnel.

Where To Buy?

Visit Amazon to order this electric tankless water heater. You can get yours here.

4. Rinnai RUC98iN Ultra Series Tankless Water Heater (Natural Gas)

Rinnai RUC98iN Ultra Series Tankless Water Heater Review

If you think you have seen enough features in the tankless water heaters we’ve talked about already, wait till you meet this model. The Rinnai RUC98iN is an 80-pound ankle water heater that runs on natural gas unlike the Stiebel Tempra 24 Plus electric model.

It comes with a digital controller for changing temperature and flow rates, and is installed indoors. It has a unique feature, two venting options, which the Stiebel Tempra 24 Plus electric model doesn’t have.

The Features

  • Weight – This gas model weights 82 pounds, 65.9 pounds more than the electric model Stiebel Tempra 24 Plus.
  • Dimension – It has a dimension of 10 x 18.5 x 26 inches and is lower than that of Stiebel Tempra 24 Plus.
  • Flow rate – It has a high flow rate, the highest so far 9.8 GPM, while the Stiebel Tempra 24 Plus has just 2.8 GPM.
  • BTU – Its BTU is 199,000, which is also the highest so far.
  • Energy factor – It has the same energy factor than the Stiebel Tempra 24 Plus.
  • Warranty – The manufacturer offers a 12 years warranty for the heat exchanger, 5 years for the parts.
  • Voltage – It has a voltage of 120 volts.
  • Venting – It uses a concentric or twin pipe venting.

Who Is It For?

Assuredly, its twin venting feature makes it ideal for large families and for commercial use.

Verdict

The Rinnai RUC98iN almost beats the Stiebel Tempra 24 Plus electric model in every way. It is the best gas tankless water, which helps save energy and cost, but also serves large households. Rinnai allows you to install this model yourself given that licensed personnel will inspect it. This really reduces the cost of installation.

Where To Buy?

You can buy this gas tankless water heater on Amazon. Click here to get yours now.

5. Rheem RTGH-95DVLN Direct Vent Tankless Water Heater

Rheem RTGH-95DVLN Direct Vent Tankless Water Heater Review

It seems we saved the best for last. The Rheem RTGH-95DVLN is popular among the tankless water heaters and truly stands out. It’s packed with advantageous features. It’s efficient and consumes less energy compared to the Stiebel Tempra 24 Plus electric model. The intelligent electronic control is automatic and monitors its functionality.

Its digital display makes it user-friendly, it allows for temperature setting and maintenance of the heater. Also, it comes with an inbuilt electric blower and a digital remote for easy operation unlike our Stiebel Tempra 24 Plus electric model.

The Features

  • Weight – This gas model weighs 79 pounds.
  • Dimension – It has a dimension of 18.5 x 9.8 x 27.5 inches.
  • Flow rate – It has a flow rate of 9.5 and higher than the Stiebel Tempra 24 Plus electric model.
  • Energy factor – This model has a 94% energy-saving efficiency and features a stainless-steel heat exchanger.
  • Special feature – It has a self-diagnostic system which makes it very easy to install.
  • Digital display – Like our Stiebel Tempra 24 Plus electric model, it comes with a digital display which makes it more user-friendly.
  • Venting – It’s installed using a two-pipe direct PVC vent system.

Who Is It For?

This gas model is for both small and large families, but, preferably for large households for commercial use.

Verdict

The Rheem RTGH-95DVLN water heater is effective and efficient. If you want to save on bills, this is the one. Its automated system makes it easy to use and maintain. Installation cost is an issue you might want to consider, though.

Where To Buy?

You can buy this gas tankless water heater on Amazon. Click here to get yours now.

Bottom Line

The information in this product review will help you select the best tankless water heater, being a gas or electric one, that will suit your needs.

When selecting a tankless water heater, look out for key features like cost, flow rate, weight, BTU, and energy rate. These features will help you select the best tankless water heater for your household or business.

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