The best water heater you can ever use is tankless water heaters. Tankless water heaters are leading the market and gaining ground vastly. This is as a result of the fact that these water heaters are super-efficient and cost-effective.
Gone are those days when you have to pay huge water bills. Gone are those days when you would be bothered about limited hot water supply. With tankless water heaters, you get continuous on-demand hot water supply without having to burst your account.
Today, there are hundreds of tankless water heater brands, and many brands still keep evolving. Among these numerous brands, certain brands are leading the market, and two of these brands are Rinnai and Rheem.
These two brands produce great tankless water heaters. They are super-efficient and strong. With them, you can hardly go wrong except you bought the wrong unit for your home needs.
Looking at how awesome these two brands are, picking which one to purchase out of the two can be really challenging. In this article, you will be informed about the two brands, their peculiarities, and downsides. Possibly, this might guide you on the best one to purchase for your home needs.
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Contents
Rinnai Tankless Water Heater

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Sometimes around the 1920s, a Japanese named Hidejiro Naito, established a multinational company in Nagoya, Japan. This multinational company is what we now know as Rinna. The company is popularly-known for producing kitchen appliances, heating appliances, rice cookers, flyers, home heating appliances, and much more equipment that run on gas, of which tankless water heaters are included.
Today, Rinnai is one of the leading companies that manufacture water heaters. They are highly functional and very efficient. Rinnai tankless water heaters can be fueled by either natural gas or propane. They can also be used indoors or outdoors.
One of the unique features of Rinnai tankless water heaters is that they operate with advanced technology. They are equipped with Wi-Fi and remote controls.
Rheem Tankless Water Heaters

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Between Rheem and Rinnai, one cannot really tell which brand is older. Rheem was found in California in the year 1921. The company is widely-known far and wide as one of the best water heater manufacturers.
What brought them to limelight and made them even more popular is their gas storage heater, which they launched into the market in 1931. Rheem produces both tank and tankless water heaters that are powered by electricity and gas. They also produce solar-powered tank water heaters.
Compared with the tank water heaters, Rheem’s tankless water heaters are more efficient. They are either powered by electricity or gas. The gas-powered models are durable, functional, and offer high gallons-per-minute ratings.
Rinnai versus Rheem Tankless Water Heaters
It is a really tough one declaring the best between these two brands because both offer almost the same quality of service. Regardless, there are still some little differences that can be pointed out.
Efficiency
They are both super-efficient. But if we should put efficiency, capacity, and performance together, Rinnai has the upper hand. Rinnai has higher gallons-per-minute ratings than Rheem. Rinnai is the best option if you have a large family with high water demand.
Affordability
Rinnai actually makes the most expensive tankless water heaters. Except you are not so particular about saving, but if you are, you should go for Rheem. Installing a Rheem tankless water heater is also cheap compared to Rinnai.
Advanced Features
Rinnai might produce costly tankless water heaters, but their products are heavily-equipped. Wi-Fi technology that sends maintenance alerts to your phone, remote control that allows you to monitor the water system from anywhere in the house, you will surely love it.
Varieties
Who does not like to have a wide range of varieties to select from? Rheem has a wide collection of models from which you can choose the one that suits your home needs. Rinnai does not produce electric tankless water heaters, while Rheem has many.
Final Thought
The best way to choose a good water heater is by selecting the one that suits your house needs. No matter how good a water heater is, if it is not what you need, you will never be satisfied with its performance.