Rheem Tankless Water Heater: A Detailed Guide [Top 5 Review]

Interested to know about the Rheem tankless water heater? Are you considering buying a tankless water heater but unsure whether a Rheem would be the best fit for you and your house? Well, you will get all of your answers in this article, you just have to take a walk in it. 

There are numerous tankless water heater brands available, and each one meets a particular set of requirements for a family. Many people prefer Rheem tankless water heaters because they have high-efficiency ratings and take up less space. 

On the basis of experience and quality, the brand has been able to build a solid reputation for itself over the years, but we’ll go into more detail about Rheem tankless water heater along with the 5 best Rheem tankless water heaters in this article. So, let’s start. 

Why Should You Choose Rheem Tankless Water Heater?

Rheem is a reputable manufacturer of heating, cooling, and water heaters. The business has been making water heaters since early 1925s. 

In actuality, it was among the first businesses to create a water heater. The technology, skill, and knowledge that Rheem dealers offer and that the products deliver can be trusted. If you take a look at Google Trends, you can observe the most popular region for Rheem tankless water heaters. 

Most popular region for Rheem tankless water heaters according to Google Trends

In addition to being the leading producer of water heating goods in North America, Rheem is currently the only manufacturer in the world to produce heating, cooling, water heating, pool & spa heating, and commercial refrigeration products.

Core Features of Rheem Tankless Water Heater

  • Energy usage is regulated by “smart” controls to maximize performance and safety.
  • Gas systems that have a maximum flow rate of 0.40 gallons per minute in the business.
  • Instantaneous water temperature viewing through a digital display
  • Direct venting with sealed compartments that releases combustion gases safely
  • Remote controlling system 
  • Protection against freezing in -30 degree temperatures
  • models, both indoor and outdoor
  • The heat exchanger has a 12-year warranty, with parts and labor covered for five and one year, respectively (gas systems only).
  • Water and gas leak detection system by generating automatic error code 

Benefits of Rheem Tankless Water Heater

  • The Energy Star certification for Rheem tankless water heater. A system that complies with Energy Star requirements typically consumes roughly 20% less energy than its equivalent standard product.
  • Tankless units heat water “on demand” rather than keeping a tank’s worth of water throughout the day, which wastes energy.
  • Tankless systems are small and may fit almost any place, including in a closet or beneath a sink.
  • You have control over the temperature of the water leaving a tankless unit that is the right size.
  • With tankless systems, hot water is always available and never runs out. 
  • Have you ever tried to bathe or shower in a house full of guests before a big event? The hot water in a storage tank unit ultimately runs out when there are too many users. That issue won’t ever arise with a tankless system.

5 Best Rheem Tankless Water Heaters to Get a Warm Winter! 

It’s crucial to do your homework before making such a sizable commitment, so we’re here to assist. The pros and cons of each model including features and specifications of top-rated Rheem tankless water heater will be discussed in this section.

Products Ideal For Pricing Details 
RHEEM Gas Condensing Tankless Water HeaterIndoor Installation BUY NOW
Rheem Tankless Electric Water HeaterVacation Homes & BathroomsBUY NOW
Rheem Mid-Efficiency Tankless Water HeaterOutdoor Installation BUY NOW
Rheem High-Efficiency Tankless Water HeaterBoth Indoor & Outdoor Installation BUY NOW
40 Gallon Rheem Professional Water HeaterSmall to Medium Homes BUY NOW

1. RHEEM Gas Condensing Tankless Water Heater

RHEEM Gas Condensing Tankless Water Heater
RHEEM Gas Condensing Tankless Water Heater

Enjoy the ease and comfort of constant hot water. Rheem’s natural gas condensing tankless water heaters come in indoor and outdoor models and are packed with features to help you save money and minimize water waste. 

Additionally, the up to 96% efficiency of these ultra-low NOx tankless solutions helps to lower energy expenses.

Specifications

  • Brand: Rheem
  • Capacity: 8.4 Gallons
  • Power Source: AC/DC
  • Item Dimensions (LxWxH): 27.5 x 9.8 x 18.5 inches
  • Color: Gray

Key Features

  • Ensure consistency to produce hot water 
  • Low operating cost with high energy efficiency and water savings 
  • Compact and space-saving design
  • Advanced water and gas leak detection system 
  • Generates automatic error code after finding any leak and shutting down the unit

Pros

  • Save water, space, and money 
  • Reduce energy consumption 
  • Easy and convenient to operate  

Cons

  • Sometimes you may face technical issue 

Price

Price: $1,188.00

FREE delivery 

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2. Rheem Tankless Electric Water Heater

Rheem Tankless Electric Water Heater
Rheem Tankless Electric Water Heater

With a Rheem tankless electric water heater, you can take advantage of the comfort and convenience of continuous hot water on demand. 

The point-of-use electric models are perfect for a single faucet or shower, while the whole-home electric models are appropriate for houses with busy families, homes with luxurious bathrooms, and vacation homes.

Specifications

  • Brand: Rheem
  • Capacity: 18 Kilowatts
  • Power Source: AC/DC
  • Item Dimensions (LxWxH): 18.5 x 14.5 x 3.5 inches
  • Color: Gray

Customer Reviews: 4.5 out of 5 stars (1,215 ratings) 

Key Features

  • Integrated with external digital thermostatic control with LED display and ensure +/1 degree accuracy
  • Designed with the most advanced self-modulation technology that adjusts power to meet hot water demand
  • Covered with durable copper immersion two heating elements that are field serviceable. 
  • Flow rate up to 4.4 GPM
  • Easy simple installation – bottom 3/4 inch NPT water connections
  • Threaded for easy replacement, simple installation 
  • All models with an output of more than 6kW feature energy modulation, which means they only use as much electricity as is necessary to warm the water you need.
  • Each model has a digital temperature control that makes setting the set point simple.

Pros

  • Temperature controlling system 
  • Powerful performance 
  • Save energy, money, water, and space   

Cons

  • Not support two showers and two sinks at the same time

Price

Price: $447.32

FREE Returns 

FREE delivery

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3. Rheem Mid-Efficiency Tankless Water Heater

Rheem Mid-Efficiency Tankless Water Heater
Rheem Mid-Efficiency Tankless Water Heater

A mid-efficiency outdoor natural gas tankless water heater for continuous hot water is the Rheem RTG-70XLN-1. These outdoor models heat water to the required temperature whenever and for as long as you need it, using less energy and space.

Specifications

  • Brand: Rheem
  • Capacity: 100 Gallons
  • Power Source: AC
  • Item Dimensions (LxWxH): 13.88 x 8.88 x 23.63 inches
  • Color: Gray
  • Style: Industry, Outdoor

Key Features

  • Even while taking several back-to-back showers, Rheem tankless gas water heaters never run out of hot water since they continuously supply it.
  • The energy needed to heat the water you need is automatically adjusted in all Rheem tankless gas versions. This updated method increases efficiency while consuming less energy.
  • Rheem uses emission reduction methods to improve air quality. Every model complies with or exceeds stringent government requirements in all 50 states.
  • The tankless remote electronic thermostat from Rheem makes it simple to change the water’s temperature in increments of two degrees between 85 and 140 degrees Fahrenheit. 
  • Additionally, the device can be turned ON or off by only touching the power button. Also, anytime service or maintenance is required, thorough diagnostics are digitally shown.

Pros

  • Reduce energy consumption 
  • Easy and convenient controlling 
  • Remote controlling system 
  • No need for venting 

Cons

  • Sometimes it burst at 25-degree temperatures but is expressly advertised as freeze-proof to 30-degree.

Price

Price: $709.30

FREE delivery 

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4. Rheem High-Efficiency Tankless Water Heater

Rheem High-Efficiency Tankless Water Heater
Rheem High-Efficiency Tankless Water Heater

Enjoy the ease and comfort of constant hot water. Rheem’s high-efficiency condensing tankless gas water heaters come in indoor and outdoor models and are packed with features to help you save money and minimize water waste. 

Additionally, the up to 96% efficiency of these ultra-low NOx tankless solutions helps to lower energy expenses. 

Specifications

  • Brand: Rheem
  • Capacity: 100 Gallons
  • Power Source: AC/DC
  • Item Dimensions (LxWxH): 27.5 x 9.75 x 28.5 inches
  • Color: Gray

Key Features

  • Even while taking several back-to-back showers, Rheem tankless gas water heaters never run out of hot water since they continuously supply it.
  • The energy needed to heat the water you need is automatically adjusted in all Rheem tankless gas versions. 
  • This updated method increases efficiency while consuming less energy.
  • Rheem uses emission reduction methods to improve air quality. 
  • Every model complies with or exceeds stringent government requirements in all 50 states.
  • The tankless remote electronic thermostat from Rheem makes it simple to change the water’s temperature in increments of two degrees between 85 and 140 degrees Fahrenheit. 
  • Additionally, the device can be turned ON or off by only touching the power button. Additionally, anytime service or maintenance is required, thorough diagnostics are digitally shown.

Pros

  • ENERGY STAR certified 
  • Save up to 33% of energy costs
  • Qualified for local utility rebates
  • Built-in WiFi

Cons

  • Little bit expensive 

Price

Price: -6% $1,402.37

List Price: $1,499.00 

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5. 40 Gallon Rheem Professional Water Heater

40 Gallon Rheem Professional Water Heater
40 Gallon Rheem Professional Water Heater

There are numerous 40-gallon electric water heaters available. Rheem continues to expand upon our foundation of tank-type gas water heaters to provide some of the highest-performing water heaters now on the market, ranging from conventional to high efficiency. 

For any family’s lifestyle and budget, this selection of gas water heaters offers the ideal blend of performance, functionality, and efficiency, so you can rely on consistent hot water for years to come.

Specifications

  • Brand: Generic
  • Capacity: 40 Gallons
  • Power Source: Gas Powered
  • Item Dimensions (LxWxH): 61.5 x 21.25 x 61.5 inches
  • Special Feature: Overheat Protection

Key Features

  • Long-lasting tank protection is provided by a premium-grade anode rod. Features
  • For simple installation, an electric junction box is situated above the heating elements.
  • When temperatures are too high, an over-temperature safeguard turns the power off.
  • Included a temperature and pressure relief valve
  • Low lead-compliant system

Pros

  • Cord-free design 
  • Enhanced-flow brass drain valve
  • Easy to light 
  • No matched required 

Cons

  • Increased size 

Price

Price: $633.00 

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Explore the Types of Rheem Water Heater

There are mainly three categories of Rheem water heaters available. A wide range of electric units with different efficiency ratings is available from Rheem. 

Since gas units may give higher flow rates and gas prices in the Dunwoody and Marietta areas are typically lower than those for electricity, they typically provide more comfort and energy savings.

Tankless Water Heater

With a Rheem tankless water heater, you can take advantage of the comfort and convenience of continuous hot water on demand. 

While the whole-home tankless water heaters available in natural gas, propane, and electric types are fantastic for homes with busy families, homes with luxurious bathrooms, and vacation homes.

Rheem offers a wide choice of alternatives, whether you’re wanting to supply hot water to your entire home, a single site, expansions, garages, outbuildings, or even RVs in order to locate the best tankless water heater for your requirements.

Tankless Condensing

Rheem’s natural gas condensing tankless water heaters come in indoor and outdoor models and are packed with features to help you save money and minimize water waste. 

RHEEM RTGH-84DVLN-2 Condensing Tankless Water Heater is one of the best natural gas condensing tankless water heaters because it will provide a 12-year warranty and ensure ENERGY STAR certification. 

Tankless Mid-Efficiency

With mid-efficiency tankless gas water heaters that provide a constant flow of hot water, Rheem has the solution. 

Both indoor and outdoor models, which are energy-efficient and compact, can heat water to the desired temperature whenever and for however long you need it.

For example, you can try Rheem Mid-Efficiency Tankless Water Heater that will deliver a maximum flow rate between 7.0 to 9.5 GPM (gallons per minute). 

Tankless Electric

Rheem electric water heaters are perfect for a single faucet or shower, while the whole-home gas and electric models are appropriate for houses with busy families, homes with luxurious bathrooms, and vacation homes. So, this type will be one of the best water heaters for bathrooms and indoor usage.  

In this regard, you can go for Rheem Tankless Electric Water Heater which is almost 99.8% energy efficient and deliver a maximum flow rate of 8.8 GPM. 

Tank Water Heater

If you’re looking for a gas tank water heater or an electric tank water heater, Rheem has you covered as they produce the world’s best tank water heater.

Tank-Type Gas

For any family’s lifestyle and budget, Rheem tank-type gas water heater offers the ideal blend of performance, functionality, and efficiency, so you can rely on consistent hot water for years to come. For instance, you can take a look at the 40 Gallon Rheem Natural gas water heater

Tank-Type Electric

Rheem electric tank-type water heater is a perfect illustration of providing the ideal ratio of value, effectiveness, and features for any lifestyle and price range. In this case, the 30 gal. Residential Electric Water Heater will be a better decision. 

Hybrid Water Heater

Compared to a conventional 100-Watt incandescent light bulb, Rheem ProTerra Hybrid needs less energy to operate. When you purchase the Rheem Hybrid Electric Water Heater, you can save money through federal tax credits, local utility rebates up to $1,0001, and energy cost savings of up to $491 annually.

Heat Pump Water Heaters

Operating costs are decreased by up to 3.5 UEF. Any leak, big or tiny, internal or external, is discovered by the LeakSenseTM Built-in Leak Detection System.

Direct plug-in power cord installed at the factory Replaces a regular gas water heater with ease. You will get all of them from the Professional Prestige Plugin Heat Pump Water Heater

Point-of-Use

Rheem point-of-use water heaters are designed to supply hot water almost immediately, saving you time and space while providing hot water where you need it. 

These little water heaters are a wonderful option for house extensions, detached constructions, and more because they are simple to install beneath sinks. In this regard, the Rheem RETEX-04 Point-of-Use Tankless Water Heater will be the best choice. 

Solar Water Heaters

Heat your water by utilizing the sun’s power. Rheem offers a selection of solar water heaters that can efficiently and cheaply heat the water in your house. 

Pick from a number of choices to keep your hot water stored and offer backup capacity if necessary. In this context, Rheem SolPak Electric 80 Gallon Water Heater will be a perfect choice. 

Combination Boiler

Look no further than a Rheem Combination Boiler if you want to conserve space in your home while yet enjoying the convenience of continuous hot water. 

This type is included Energy Star Certification and 95% AFUE. The ideal replacement for a boiler is included an outdoor reset sensor. For example, you can try Rheem RCBH199DVLN Combi Tankless Water Heater Boiler to get the best experience. 

Which Factors Should You Consider Before Buying a Rheem Tankless Water Heater?

The majority of homeowners in the US, Canada, and Singapore want to install Rheem water heaters, but they are unaware of what factors to take into consideration when selecting a storage water heater for their homes. 

Rheem water heater models are widely accessible in various countries, and what sets each model apart from the others is its size, appearance, or cost.

The following considerations should be taken into account when purchasing or installing a Rheem water heater for hard water.

Storage Type

You should think about the water heater’s storage kind while purchasing one. The majority of Rheem storage water heaters heat water in a tank that is typically filled with water. 

To get hot water to come out of the showerhead or the tap while utilizing a Rheem storage water heater, you will need to turn the valves on your faucet. This occurs when cold water enters the storage water heater’s tank and efficiently heats the water.

On the latter, rapid water heaters are energy-efficient but lack storage tanks. The water in an immediate water heater is heated by coils to the desired temperature. 

Storage Capacity

The capacity, or quantity of hot water that the storage water heaters can hold, is typically mentioned. The smallest size typically has a capacity of three liters. 

On the other hand, the larger storage water heaters can be able to hold twenty-five liters or more and are typically utilized in large residences and commercial buildings. You can go for 75-gallon water heaters for large homes. 

The capacity of a Rheem storage water heater will be determined by how much hot water it produces each second, typically measured in liters per second or gallons per minute.

Energy Efficiency

The main driver of demand for tankless water heaters is rising customer concerns about energy sustainability. In general, storage water heaters use a lot of electricity. Due to the fact that they adhere to the energy efficiency standards Singapore is pushing. 

“The market of tankless water heaters was estimated at $3.26 billion globally in 2021, and from 2022 to 2030, it is anticipated to grow at a CAGR of 8.7%.” Source  

Rheem water heaters have top models that are energy-efficient. With an instant water heater, on the other hand, you can save more energy at least 30% more because they only produce heat when it is actually needed.

So, Rheem storage water heaters use more energy since they can hold more water than other types of water heaters. 

Household Size

The space you have in your home or bathroom for the placement of the Rheem storage water heater installation. 

It must be taken into consideration during water heater installation because it may involve electrical configuration and could impair the water heater’s overall performance as well as lead to a power trip. 

Therefore, the size of storage water heaters varies according to the heater’s capacity, installing low-capacity storage water heaters will take up less room.

Safety Precautions

You should think about your own safety as a customer. Your installed water heater may occasionally produce steam, and the added pressure may harm it. 

There is a safety valve on top-of-the-line water heaters like Rheem’s that makes sure there is no excessive pressure inside the heater.

Finally, the recent Rheem water heater models include a thermostat mechanism that shuts off the electric supply once the water reaches the maximum temperature setting in order to prevent overheating that can result in water heater problems.

Installation and Maintenance Cost of Rheem Tankless Water Heater

For Rheem to honor the warranty, professional installation is necessary. The guarantee will be nullified if the product is installed improperly.

Rheem tankless water heaters range in price from $350 to $1,100 for electric units with a 5-year warranty to $630 to $2,000 for gas systems with a 12-year warranty. 

One of the biggest producers of water heaters in the US is Rheem, and their tankless gas models adhere to tight Low-NOx emission regulations.

Some Drawbacks of Rheem Tankless Water Heaters

Despite being touted as one of the greatest water heaters, there are several drawbacks and risks of the Rheem tankless water heaters that you should be aware of. The key ones are listed below.

High Installation & Maintenance Cost

When compared to a traditional water heater, the upfront cost of installing a Rheem tankless water heater is very expensive. In fact, the least expensive model is about twice as expensive as conventional devices.

Additionally, the cost of labor and other installation expenses is very high. For instance, if you choose a gas hot water heater, you will have to pay a lot of money to reroute your gas lines.

Inconsistent Temperature

If you are only using one machine, not multiple, a Rheem tankless water heater will only give constant hot water. 

Users have cited inconsistent water heating as one of the system’s shortcomings in the majority of tankless water heater evaluations. To reduce heating irregularities, you might install many tankless water heaters.

Long-Term Maintenance

The maintenance of a Rheem tankless water heater is similar to that of traditional tanks. To get rid of the calcium, silt, minerals, and other things in the system, you must flush it at least once a year. 

The system also has fans and filtration, which need routine maintenance to work effectively. Due to the system’s intricacy, experts advise engaging specialists to carry out the maintenance.

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Concluding Words!

With good cause, Rheem tankless water heaters have long been regarded as one of the best brands. All household sizes can utilize their tankless water heaters, some of which are energy-efficient and simple to install. 

The model you choose for Rheem tankless water heater will mostly rely on how much water you use, and depending on the data we provided, there are a number of models available to meet your needs.

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