Tankless water heaters probably are one of the best innovations in the field of water heaters. Considering how important they are, one should make sure that while buying a water heater, they buy the right one.
Moreover, tankless water heaters provide the consumer with several benefits. Some of which are space-saving, reducing gas bill and providing more efficient as well as good user experience.
If you are on the market for a good tankless water heater, Rheem must surely be on your list. Rheem tankless water heaters are one of the best in North America and among the most famous brands.
This is because it has become one of the most widely accepted water heater manufacturers mainly in the United States. It is a worldwide company which sell products in various countries.
Furthermore, they cover all kinds of uses—whether it is indoor or outdoor, commercial or at home. Rheem also has the best after-sales services and high-quality models.
They make water heaters for small and large families. So you can be sure that you would find at least one model that fully suits your needs.
In the following list, you can check out some of the best models from Rheem and hopefully discover one that is perfect for you!
7 Best Rheem Tankless Water Heaters Reviews 2021
Rheem RTEX-13 is a wonderful all-in-one heating solution available and provides a great value. Basically, it is a good option for a point-of-use unit and best for those who live alone or in small apartments.
In case you are looking for the best value for your money, this unit is perfect for you.
Also, it offers a flow rate of about 3.17 GPM which is just enough for a small home. Additionally, its small and compact size allows the user to install it anywhere.
Due to the energy efficiency features, as well as the cost savings, it is a great choice for those who are on a tight budget.
It also runs on electricity and has about 99.8% efficiency. So, you can be sure that you’d be saving a lot in the long run. It has earned a good reputation among the users because of its user-friendly operation and the best-in-class manufacturers guarantee.
- Lightweight And Compact
This compact model is able to save the essential space for you. Even though it is small and light in weight, it has many great features. The unit can be installed easily even by yourself and can be put up anywhere; even under the sink or any other place which is convenient for the user. Its maximum flow rate of 3.17 GPM is good for a single bathroom use.
- Adjustable Digital Thermostatic Control
Operating the water heater is quite simple. The adjustable digital thermostatic control allows the user to change the temperature of the water as required. You can simply use the button and change the temperature easily. Since it is an advanced design, heat can be increased in increments of 1°F with the help of an easy-to-use and convenient LED display system.
- Energy Efficient
Since it is one of the best tankless water heaters, it is really efficient and affordable. This electric tankless water heater model provides endless hot water and is very energy efficient. It works only when the outlet is operating, therefore saving a lot of money in the long run. It boasts a 99.8% energy efficiency. In addition to that, it is pretty easy to install and also saves a lot of money on the installation cost.
The Rheem Heating Chamber RTEX-13 is a good and inexpensive option for you if you are living in a smaller living space. One of the significant downsides it poses is its limited flow range.
It is one of the best options for small scale use. So, if you want a low-maintenance inexpensive heater that’ll also meet your hot water requirements, this model is for you.
The Rheem RTEX-18 offers elegant and high-quality performance. This unit from Rheem ensures longevity, usability and compactness. This is because its installation process is simple and it is light in weight.
Despite the small design, it is extremely powerful and environmentally-friendly. Additionally, the device has an external thermostatic regulator, which displays the temperature of the water inside up to a 1-degree accuracy.
The Rheem RTEX-18 is powered by electricity and heats up rapidly due to the use of two highly conductive copper heating elements, which transfer heat to the water. Also, its energy consumption is remarkably low so it can assuredly save you money in the long run.
The unit is easy to install and also is very user-friendly. It is an ideal point-of-use product which is good for homes, apartments, offices and hospitals.
- Simple Installment
This electric tankless water heater unit is very easy to install even by yourself which greatly reduces the high costs on installation. It is lightweight, easy to use and can fit into even the smallest of areas. It also promises simple replacements. Installation is super easy. As a good electric tankless water heater around $500, it really worth its price.
- Digital External Thermostatic Control
The RTEX-18 model’s temperature lights up once you turn on the valve somewhere. Since the operation on control is simple, it enables you to increase the water temperature one degree a time. It also features an external thermostatic control with digital LED display with +/- 1 degree of accuracy.
- Durable Heating Elements
The heating elements of Rheem RTEX-18 are engrossed in strong copper. So, the durable copper material protects the heating element. It is also equipped with a rugged copper and brass heat exchanger which can withstand harsh water conditions. Along with that, it has a satisfying after-sale service for you.
The Rheem RTEX-18 is an outstanding electric water heater for most homes with average hot water requirements.
It does a good job but finding its parts can become a bit difficult. Whether it is used as a point-of-use unit or a complete home water heater it can surely provide a constant supply of hot water.
The Rheem RTGH-95DVLN is a gas-powered tankless water heater ideal for indoor purposes. In particular, it is 94% energy efficient and gives a generous flow rate of 9.5 GPM.
With such a generous flow rate, you can run four showers simultaneously. So, it is right among the high-end commercial water heater flow rates enough even for busy households.
The heater is also manufactured with settings that automatically improve safety along with energy and cost-efficiency. It is a natural gas unit made for indoor use, so it will need proper ventilation.
For that reason, it comes with a 2-pipe design for a direct vent PVC system. It can easily cater to higher demands so you don’t have to worry about running out of hot water at all.
- Heat Condensing Body
The model is designed using stainless steel. Also, the metal’s nature makes sure that the main tank flow of the water heater isn’t affected. Thus protecting it from various factors like rust and corrosion. This method of the model design means that the chances of the water heater’s long life are ensured.
- Advanced Technology
This heater’s package comes with digital remote control and a ten feet thermostat cord. The remote-controlled operation will ensure the digital working of the control flow. Therefore, it helps you get a comfortable experience. Its EZ-Link wire is a technology which connects two independent tankless water heaters to operate as a single unit. So, it increases the water heating efficiency. It also consists of a self-diagnostic system so the system apparatus functions are on a constant check from inside. This will warn you whenever any problem arises.
In spite of some minor setbacks, the Rheem RTGH-95DVLN holds good in terms of great performance. It can also operate conveniently at higher altitudes.
This is ideal for those who prefer to save on the energy bills. It is recommended that the unit be installed by a professional. All in all, the unit is best suited for large families with high hot water demands.
The Rheem RTEX-24 provides an all-around experience when we talk about providing hot water to your entire home. This is a highly energy-efficient model that performs impressively.
It provides hot water services on-demand to either one fixture or your whole house. At a generous flow rate of 6 GPM, it can serve up to three fixtures at a time. It includes cost-saving technology and impressive hot water services.
The appearance and high efficiency may be the strong selling point of Rheem RTEX-24. This model has received positive reviews from the customers for its sleek design and high performance not only floor singular fixtures but also for households with multiple family members.
- High Flow Rate
The flow rate can get as high as 5.9 GPM, which proves to be a favourable feature for those whose requirements are high. So, it is capable of serving for the entire house. This feature enables the use of multiple outlets at the same time.
- Advanced Self-Modulation
The unit can provide an unlimited amount of hot water thanks to an advanced self-modulation mechanism. It is a feature that ensures the appropriate temperature to the output. In order to do that, the mechanism identifies the temperature and flow of the water so that it can provide the amount of heat needed for heating the water. This way, it ensures the required output. Moreover, the output temperature won’t modify even if the flow changes. Also, the temperature can range from 80 to 140F degrees.
- Copper Immersion Heating Elements
The unit has durable copper immersion three heating elements, which are actually field serviceable. The robust copper immersion heating elements with brass top increases durability and threaded for easy replacement.
Rheem RTEX-24 is satisfactory for almost any type of household. The unit has a sleek design and is very easy to install. It can assuredly offer you a powerful, efficient and dependable performance. So, if you prefer a reliable system and can afford the expense, this is the perfect choice for you.
The Rheem RTEX-08 is a self-modulating efficient tankless water heater. Additionally, it comes at an affordable price too. It has several interesting features and is made to be installed indoors. It is one of the top-rated compact tankless water heaters. With a flow rate maxing out at 1.95 GPM, it is a good option for mobile homes, RVs and small cabins.
Its compact design and light weight allow it to be installed virtually anywhere the user finds fit. It is also easy to install and takes a minimal amount of time to put up. It provides hot water quickly and on demand for single point-of-use sinks, showers or multiple applications.
- Digital Thermostatic Control
The RTEX-08 water heater consists of a control setup with which the user can control and monitor the unit. The thermostatic display is different from the ordinary digital display. You can use the thermostatic control to adjust the temperature with increments of 1°F. according to your preference. The advanced features make for an easier user interface. You are bound to have an easy operational experience with the unit
- Energy Efficient
This unit has environmentally friendly features and technology. The company has tried to make it good for the environment and comfortable for the user. One of the most appealing features of this heater is the energy efficiency. It saves the precious energy that can be used in other important works. At the same time, it also saves money for the user.
The Rheem RTEX-08 is a cost-saving and energy efficient water heater. It doesn’t need high maintenance and can be installed easily almost anywhere.
Its has a low flow rate which might barely suit the needs of even a small apartment. Despite that, the features and ease of operation make it a good option for those who want an affordable unit. As stated earlier, It is best suited for spaces like mobile homes, small cabins and RVs.
The Rheem RTG-84DVP is a tankless water heater that runs on liquid propane. It is mainly designed for residential applications and heats hot water on demand.
The RTG line is Raheem’s mid-efficiency units but it surely is a solid choice. Besides that, it is small and compact which saves your essential storage space. It is also, highly dependable and energy efficient.
It offers a flow rate of 8.4 GPM which is enough to provide hot water for an entire home. The technology held by such a small heater doesn’t fail to impress.
Operating the unit is simple and since the unit is small in size, it can be installed anywhere. The digital interface also helps improve the user experience as well.
- Self Protection
The unit consists of a self-protective system that is built into the unit. Mainly, it protects the system from overheating. Additionally, the next generation burner technology used to heat water ensures high performance and energy efficiency. The Rheem RTG-84DVP follows the low nitrogen oxide emission standards too. As a matter of fact, build, overall performance, and safety features, the water heater is also eligible for federal tax credits.
- Ease of Operation
Fortunately, you can operate the unit from a distance. You can also check the water temperature or unit status whenever using the digital display. It’s a user-friendly digital display that helps you set the temperature and take a look at the unit’s status from time to time.
The Rheem RTG-84DVP is a great option for almost any kind of household. The small and compact size which allows for easy installation. It can support the hot water needs for an entire house. The digital interface makes it a convenient and comfortable product to operate. It is a great product considering the value.
Therefore, you can assuredly have a good user experience with this unit. So, overlooking the minor shortcomings, the positive aspects make the unit completely worth buying.
The Rheem RTG-84XLP-1 is an exceptional propane tankless water heater. In general, it has low NOx emissions and is a medium efficiency water heater.
Also, it should be noted that the unit should be installed outdoors. This model features freeze protection, that is, it can withstand harsh cold conditions.
It has a maximum flow rate of 8.4 GPM which is best suited for households with 2-3 bathrooms. The unit is also compatible with residential hot water recirculation pumps. It has about 82% energy efficiency along with an all copper heat exchanger.
The hot start programming of the unit minimizes cold water bursts by reducing the flow rate until the water reaches the desired temperature.
So, you don’t have to worry about being hit with cold water when you first switch your shower on in the morning. This unit also has other exclusive water saving technology that can save you over 1,000 gallons of water every year.
- Compact Size
The RTG-84XLP is designed to be compact and small in size. So, it occupies only a small area. The small size combined with outdoor installation lets you install it anywhere as well as rids it of ventilation requirements.
- Low usage costs
Since hot water flows out of the unit quickly, not much cold water is wasted in showering. The recirculation pump recycles the water that’s already been heated to improve product efficiency. The high efficient design also saves a lot of money for your bills.
The RTG-84XLP-1 is a good unit which provides comfort as well as an assurance of high quality performance. This model is perfect for the use of one big family or home use. You can comfortably enjoy hot water whether you’re washing dishes or showering.
All in all, it’s a great outdoor propane water heater that I’d recommend in case you don’t want an electric or natural gas unit.
It is said that on an average, heating water costs about 20% of your general budget. So, it is apparent that water heaters need to be chosen carefully with all factors into consideration. Nowadays, people are opting for replacing their old tank-type water heaters with tankless water heaters. However, it is necessary to know that buying a tankless water heater is like an investment.
You must select one that best suits your needs and comes within your budget. Switching from a tank water heater to a tankless unit can be expensive as you would have to retrofit your pipelines and possibly your electrical system.
Generally, homeowners who choose to replace the old units, choose the type that runs on the same fuel- natural gas or electricity. This adds to the convenience in the installation of the tankless water heaters.
Scoping Your Options
Basically, there are two types of tankless water heaters: gas and electric. Gas tankless water heaters are less expensive to operate, but they typically require venting—outdoor models are an exception.
Electric tankless water heaters don’t require venting, they usually only require a dedicated electrical circuit. Plus, they’re easier to install. Added to that, you need to determine where you need the unit.
For a single location—like a sink, bathroom, dishwashers or choose a point-of-use tankless electric water heater.
For whole-home applications, choose the water heater type that matches your home service, either electric, natural gas or liquid propane.
Before deciding on the size you think about two factors: flow rate and temperature rise. Flow rate is the gallons per minute of hot water that your household uses at a given time. To do this, you have to include all the appliances that use hot water.
After you do the math, you can shop for a tankless heater that matches your number. If you don’t, it will mean you need multiple units. Temperature rise is the amount temperature of the tap water rises before it comes out of the faucet. Normally this is about 70 degrees Fahrenheit.
Certainly, where you stay matters because the temperature of tap water differs with areas. You’d find a very significant difference in the water coming into your house and the temperature that it has to rise to. Make sure you take into account the place you will have the tankless water heater.
Unique Features And Benefits
Certain models have unique features which are limited only to them. So, let’s say you want to free up even more space inside your home, consider a Rheem outdoor tankless water heater.
If you want instant hot water at the faucet, consider a Rheem tankless water heater with recirculation.
Similarly, if you enjoy remote control, which enables you to adjust your water temperature and monitor your system from anywhere, consider a model that’s EcoNet Enabled.
1. What is the history of Rheem?
Rheem was founded by two brothers—Richard and Donald—as Rheem Manufacturing Company in Emeryville in 1925. It began back in the 1920s as a galvanizing plant based in San Francisco, California. After that, it began manufacturing and distributing water heaters in the 1930s.
2. How long are Rheem units expected to last?
Normally, the Rheem tankless water heater units have a life expectancy of more than 20 years. Additionally, they have easily replaceable parts which help extend their life by about 10 to 15 years, depending on the frequency of use and the quality of water and installation.
3. How to flush or drain a Rheem unit?
Flushing or draining the water heater extends its life and keeps it running efficiently. Following are some brief steps on how to flush or drain your unit.
To begin, shut the power off to the unit then close the hot and cold water shut off valves to the system. The Rheem gas water heaters normally have the valve on the lower front of the water heater used to shut off.
After that, connect a garden hose using the service valve and pump a flushing mix. Take the opposite end of the garden hose in the place you will drain the water. Then turn the hot water on at the nearest faucet allowing the water to drain from the tank through the garden hose.
Open the valves, turn on the pump, and let the system circulate. When it is complete, restore the unit as before, open the hot and cold water valves and rest the system.
4. How do I adjust the temperature on my system?
You can control the temperature by turning the thermostat dial/gas control valve on the unit. On the units that allow remote functionality, you can adjust temperatures even when you are away from home.
5. Can the unit be installed in the same place my old water heater was installed?
If enough combustion air is provided, Rheem tankless water heaters can be installed anywhere, including garage, basement or on an outside wall. Plus, they can be installed in locations where a storage water heater may not fit.
6. Can I convert the water heater from LP to natural gas or vice versa?
No, that is not possible. These units cannot be converted from one fuel source to another.
Rheem is a brand you can trust to provide reliable and an all around satisfying performance. It is a premium brand that provides innovative and smart technology.
Rheem’s products and services are top-tier. You can buy any of the Rheem product with confidence. With the large variety of models they offer, anyone can find a unit that best suits your needs.
Rheem tankless water heaters are an ideal solution for large families and households with high hot water demands. The best models come with the recirculation and can even provide hot water instantly, so there are no unpleasant cold water bursts. Also, their products have amazing warranty offers and several features that are state of the art and elegant.
This concludes our article about some of the best tankless water heaters that Rheem has to offer. In the end, the decision is left up to you. We hope you found our article helpful and that it assisted you in finding you the best tankless water heater.