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We live on the verge of a technological revolution and the advancements are there in every aspect of our life. With this in mind, the best Rheem tankless water heaters are going to bring the technological advancement to your house. These devices are specifically designated to provide you with a constant flow of hot water. The most impressive thing, however, is that you won’t need an immense amount of storage space to put them in. They are incredibly compact and you can basically install them wherever you find fit. They are also incredibly efficient and are designed to save you a lot of money off your monthly electricity bill.
However, choosing the right one can be burdensome and this is why we have compiled a list of Rheem tankless water heater reviews. The intention is to facilitate the shopping process as much as we can and to save you as much time as possible. With this in mind, let’s take a look at some of the most impressive units.
- Rheem RTE 13
- Max flow rate: 4 gpm
- Dimensions: 10 x 7.25 x 3.25
- Rheem RTG-64XLN
- Max flow rate: 6.4 gpm
- Dimensions: 14 x 10 x 26
- Rheem RTGH-95DVLN
- Max flow rate: 9.5 gpm
- Dimensions: 18.5 x 9.8 x 27.5
- Rheem RTE 9
- Max flow rate: 3 gpm
- Dimensions: 7.2 x 7.2 x 10
- Rheem RTG-84XLN
- Max flow rate: 8.4 gpm
- Dimensions: 14 x 10 x 26
- Rheem RTGH-95DVLP
- Max flow rate: 9.5 gpm
- Dimensions: 18.5 x 9.8 x 27.5
Top 6 Rheem Tankless Water Heaters
Rheem RTGH-95DVLN Tankless Water Heater
The Rheem RTGH 95DVLN is definitely amongst the best Rheem natural gas tankless water heaters on the market right now. This is due to a variety of different reasons. Right of the bat, the device is incredibly energy efficient – it has an efficiency percentage of about 94 thanks to the condensing heat exchanger made out of stainless steel.
At the same time, the unit features incredibly intelligent electronic controls for further convenience. This particular feature is designated to increase the overall efficiency of the device and to make it a lot safer for usage. It also features third-party efficiency which is particularly listed by the AHRI. The device is designated to be used inside and it has a direct vent for further utility and convenient. At the same time, it is perfectly capable of heating an amount of up to 9.5 gallons per minute. This should be more than enough to satisfy even some more demanding water appliances.
The device is also rather compact. It comes in an 18.5 x 9.8 x 27.5 inches which is intended to save you some storage space. The unit also comes with a self-diagnostic system which is designated to provide you with easy installation and effortless service.
Rheem RTE 13 Tankless Water Heater
The RTE13 is another perfect representation of a great tankless water heater produced by one of the leaders on the market – Rheem. The device comes with a specifically designed on-unit temperature control which is intended to make it easy for you to adjust the particular temperature of the water. It also features LED lights which are going to show you whether the unit is in active mode or in a standby mode.
The device comes with a standard 0.5-inch water connection in order to ensure that there won’t be any surprises during the installation. However, it comes with rugged brass and copper heat exchanger. Even though it’s not as efficient as the one made out of stainless steel, these provide greater durability and longevity. The device also modulates the usage of electricity.
Regardless, the unit is certified by Energy Star which means that it is considered incredibly efficient in comparison to other water heaters. It is capable of heating up to four gallons of water per minute which is more than enough for a single application. The unit is also quite compact, coming in a 7.2 x 7.2 x 7.2 inches size. It has an approximate weight of about 7.3 pounds.
The Rheem RTG 64 XLIN is another example of a great natural gas tankless water heater. However, unlike the previous units that we have reviewed, this one has a specific designation – it is designed to be used outside. The device will make sure to heat up to 6.4 gallons per minute at a standard 35-degree rise. This is more than enough for one or two simultaneous water applications and you won’t have to worry about running out of hot water.
The unit has an approximate weight of about 54 pounds and a size of 14 x 10 x 26 inches. It is a bit larger than the devices which are installed inside but this is due to the nature of its main designation. The device is created in order to be used in a domestic environment and it is unlikely to supply enough hot water for any kind of commercial usage.
Rheem RTE 9
This particular device uses electricity as a power source. In fact, it is certified by Energy Star which means that the device is incredibly energy efficient. You are likely to feel a significant difference in the monthly utility bills. At the same time, it comes with a 1-year parts warranty and 10 years warranty on the heat exchanger. However, you should keep in mind that if you want to be able to take advantage of your warranty you should hire a licensed technician to install the water heater.
The RTE 9 electric tankless water heater unit comes with an on-unit temperature control. This is designated to provide you with more control while setting up the right heating temperature. At the same time, the device is equipped with LED lights which are intended to indicate the active element or the standby mode, depending on the current situation.
The device comes with a pretty standard ½ inches water connection which should contribute to the easy installment. No surprises are expected there. It is also equipped with a heat exchanger made out of rugged brass and copper. The device features a modulating power system for further energy efficiency.
Here we have another device which runs on natural gas as the main energy source. This particular tankless water heater is specifically intended to be used outside. The venting needs to be outside for the unit to function properly. Also, the burnt fuels are definitely going to pose significant respiratory and health hazards if the unit is used in an enclosed area.
Now, this particular heater – the Rheem RTG 84 XLN is intended to heat up to 8.4 gallons per minute at a standard 35-degree rise. This means that you could easily use at least two water appliances at a time without worrying about running out of hot water.
It is equipped with a UMC-117 remote control which is designed to provide you with the ultimate comfort and convenience while setting the right temperature of the water. It also has a 10-feet thermostat wire which would allow you to install the thermostat wherever you want. It is always preferable and practically mandatory to install the thermostat somewhere where it won’t be exposed to the conditions of the outside. The unit comes at 14 x 10 x 226 inches size and weighs roughly about 54 pounds. It is also certified by Energy Star.
This particular device is considered as one of the best Rheem propane tankless water heaters. One of the main reasons for this is the energy efficiency ratio of 94%. This is thanks to the specifically designed condensing heat exchanger. Unlike other models, the one which this comes with it is made out of stainless steel which is considered to be the most efficient way to go.
At the same time, the device comes with intelligent controls which are electronic and are designated to increase the efficiency of the unit. However, they are also designed with the idea to provide you with safe operation.
The RTGH-95DVLP is also third party efficient and it is listed by the AHRI. It is capable of delivering up to 9.5 gallons per minute of hot water. This should be more than enough to handle the majority of water applications even if they are running simultaneously. The unit also comes in a compact size of 18.5 x 9.8 x 27.5 inches which means that you can definitely put it wherever you find fit. It would also save you a lot of storage space, unlike regular tank water heaters.
Pros and Cons of Rheem Tankless Water Heaters
There is a lot of merit to purchasing a tankless water heater but there are also some drawbacks which should definitely be taken into serious consideration. This is the exact reason for which we have decided to outline some of the most important ones of them.
Let’s be honest here – cheap hot water is what most people are after in these uncertain times. Tankless water heaters are a lot more efficient than regular ones and this is definitely going to be properly reflected in your monthly electricity bill.
Rheem products are incredibly compact which means that you no longer have to plan for additional storage space. You can just install them above your kitchen sink and enjoy an endless flow of hot water.
Heated water on demand
That’s perhaps the other very important thing that the majority of people are looking for in their water heating solutions. However, it is important to know that they would still take a certain amount of time to preheat the water but it is rather inconsiderable. This means that you can enjoy a stream of hot water whenever you need it without having to wait for hours for your boiler to heat it up.
Low heating capacity
The majority of Rheem units are going to provide you with up to 10 gallons per minute of hot water. This might not be enough if you want to use a few water applications simultaneously.
High installation cost
This is another drawback that is disturbing for most of the people. The installation of a tankless water heater requires a licensed technician and this is definitely going to increase the initial investment. However, in the long run, they are a lot more efficient than regular ones which are definitely going to make up for this slight drawback.
Rheem Tankless Water Heater Installation
Installing a tankless water heater is going to require some basic knowledge in material handling and you would have to have some sort of engineering experience. The reason for this is because you would need to be aware of simple mechanic endeavors and how to properly utilize the tools according to the material that is being used. However, it is important to note that if you want your Rheem tankless water heater to be covered by the warranty, you would have to hire a licensed technician for the installation. The requirement is rather fair. Nevertheless, let’s take a look at the installation steps.
- You have to install a gas supply line. Doing this would involve you installing a basic T and a valve in the already existing gas line. You have to run the corrugated supply for the water heater to work.
- The next step would require you to tie the new waterlines for the water heater. They are generally made out of copper. Be informed that the pipes are held in one place by bell-hanger brackets. This is due to the fact that any contact with the law has to be prevented in order to properly facilitate the pipe insulation. Make sure to clean the pipe and the coat before soldering them to the installation.
- Right after you are through this you would have to build a platform to position the water heater on. The process is rather basic.
- Obviously, you would have to secure the tankless water heater to the aforementioned platform next. You can do this with typical screws through the specific holes of the heater.
- Next, you want to connect the shut-off gas valve as well as the sediment trap and also the supply line. Make sure to properly tighten the nuts at the relevant connections. You should use adjustable wrenches for further convenience.
- Step number six would require you to connect the water shutoff valve to the tankless water heater using the bell-hangers. This should allow you to properly support the runs of the pipes.
- Now you would have to use a special device called Gas-sniffer. This should allow you to determine whether or not there are gas leaks.
- After you have confirmed that there are no actual leaks you have to attach the vent piping, elbows and the connectors.
- You are almost there! Make sure to install the wall thimble throughout the outside wall at the installation site.
- The last thing you want to do is to plug the electric power. It is also highly advisable to insulate the pipes.
Rheem Tankless Water Heater Problems and Troubleshooting
Even though Rheem is one of the leading manufacturers and the products which are offered are considered as some of the best in the industry, there are some Rheem tankless water heater problems that have to be addressed. However, for the sake of being useful, we are also including some of the possible solutions in order to get your device up and running exactly as intended.
No hot water
Of course, this is the most common problem as this is also the main designation of this device. The reasons may be different but some of them include frozen pipes. During cold weather conditions, it is highly likely that the piping is going to freeze which will make the delivery of hot water absolutely impossible. This is common if you haven’t properly insulated your tubing. However, using defrost liquid should do the job but make sure that you let the water pour for a bit in order for the detergent to run off.
The water is actually too hot
This is another common problem. Interestingly enough in most of the case, there is no actual malfunction but the user has just set the controls to a high temperature. However, you can also make sure to check if the hot water tap is clogged. This could also cause the problem. To resolve it, you would have to clean up the fixtures from any sediment that could have built up.
The unit is making too much noise
The first thing that you want to make sure is to check the fan for excessive debris. You can also see if the burner is working properly. In order to determine this, you have to make sure that the flame which is burning is blue.
It is important to know that most of your problems could be perfectly prevented if you are maintaining the unit regularly and properly. This would definitely save you some money. There are a lot of tips on the internet on how to do so and Rheem also includes a user’s manual with very helpful insight.
Where to Buy a Rheem Tankless Water Heater?
There are a lot of shops which offer the products of the Rheem brand. Nevertheless, there are certain factors that you would need to account for when shopping for a Rheem tankless water heater. Right of the bat, it is important to know that most of the retailers are going to add up a certain amount in order to profit from the sale. This is going to make the particular product more expensive than it actually is and it is going to fall on you.
All in all, purchasing the best Rheem Tankless water heater is definitely not a walk in the park. There are a lot of things to be properly accounted for. For instance, you would need to know whether you are going to use it inside or outside and shop accordingly. You would also have to consider the amount of water that you would demand in order to purchase the unit that would most properly accommodate your need. If you’re looking for a traditional Rheem water heater, check out our Rheem Marathon review.
We have compiled this list of the best Rheem Tankless water heater reviews in order to provide you with full and concise information about the units in particular. The aim is to enable you to avoid compulsive shopping in order to prevent you from making unwanted mistakes that could cost you a lot of money in the long term. After all, these devices are definitely not cheap and the investment can be substantial for the majority of homeowners.