page title icon 10 BEST RINNAI TANKLESS WATER HEATER 2021 | Complete guide

Having a tough time to identify the best Rinnai tankless water heater and do not know much about to differentiate between different models. Then you have entered a perfect place of information about all the best Rinnai tankless water heaters.

When you have started the search for the best tankless water heater, you have heard many names of different brands each having some best features. It is not possible that during finding a tankless water heater, someone never heard the name of Rinnai.

Some people have traditional tank water heaters in their homes. They must be facing problems associated with these tank heaters. In winters, the best remedy for our body is a hot shower. Coming from an office in chilling weather and then wait for an hour to get a shower is a disaster. Tank water heaters have cold water stored in it and wait for an hour or half to heat this water. Secondly, it occupies more space in the house. These traditional tankless water heaters do not have any proper temperature control. In winters, the water freezes in the tank due to chilly weather. It is a really serious problem that forces users to move toward tankless water heaters.

While moving towards tankless water heaters, many brands are popping up with many attractive features. But through significant research, it has been observed that Rinnai has many different series. Each model from different series of rinnai is competitive with the most reputed model of other brands. Thus, this is making Rinnai the cause of attraction for buyers.

It has a very small size. As compared with conventional tank heaters, it occupies 90 % less space. It provides instant hot water by quick heating. Some of the models of Rinnai are natural gas-operated, some are propane operated while others are operated through electricity. These heaters are highly efficient appliances. These heaters can provide instant hot water and give relief to users.

BEST RINNAI TANKLESS WATER HEATER

Our team has researched a lot to describe all the features of the best Rinnai tankless water heaters. A list of these on-demand Rinnai tankless water heaters is given below. Just go through the list and find the best one for your need.

Image Product Details   Price
backpac Rinnai V65EP 6.6 GPM Brand: Rinnai
Model:
V65EP
Weight:
47.4 Pounds
Voltage:
120 Volts
Check Price
backpac Rinnai RL94EP Brand: Rinnai
Model:
RL94EP
Weight:
44.2 Pounds
Voltage:
120 Volts
Check Price
backpac Rinnai V53DeP Brand: Rinnai
Model:
V53DeP
Weight:
33 Pounds
Voltage:
120 Volts
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backpac Rinnai RUC98iN Brand: Rinnai
Model:
RUC98iN
Weight:
82 Pounds
Voltage:
120 Volts
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backpac   Rinnai RL75IN Brand: Rinnai
Model:
RL75iN
Weight:
50 Pounds
Voltage:
120 Volts
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backpac   Rinnai RUCS75iN Brand: Rinnai
Model:
RUCS75iN
Weight:
57.2 Pounds
Voltage:
120 Volts
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backpac   Rinnai RU180iN Brand: Rinnai
Model:
RU180iN
Weight:
64 Pounds
Voltage:
120 Volts
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backpac   Rinnai RUR199iN Brand: Rinnai
Model:
RUR199iN
Weight:
84 Pounds
Voltage:
120 Volts
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backpac   Rinnai Indoor V75IN Brand: Rinnai
Model:
V75IN
Weight:
45.6 Pounds
Voltage:
120 Volts
Check Price
backpac   Rinnai Indoor RL94IN Brand: Rinnai
Model:
RL94IN
Weight:
44.2 pounds
Voltage:
120 volts
Check Price

1. Rinnai V65EP

  • Wi-Fi connection
  • 60 months warranty on parts and 120 months warranty on heat exchanger
  • 1-year labor warranty
  • Easy installation
  • High efficiency
  • More than standard amps are required

When we talk about high-energy Rinnai tankless water heaters then its V series comes to the top. The V models of Rinnai are famous due to their high efficiency. V models have uniform energy factor in the range of 0.79 to 0.82. This model is enough to provide hot water to the whole family of an average house. These small size heaters can be installed outdoor.

Talking specifically about Rinnai V65EP, it is propane operated tankless water heater. Having a flow rate of 6.6 GPM, it provides enough hot water to take three to four showers with one to two kitchen usages simultaneously. Rinnai V65EP supplies a consistent endless supply of hot water.

Wi-Fi connection is available with this model. Users can easily connect it through Wi-Fi. The control-R 2.0 app is installed to control specific features including temperature. Users just have to install it in phones and control the heater through this. They can also ON and OFF through this app. By using this tankless water heater, the environment also remains clean. Firstly, it is installed outdoor. Moreover, it releases fewer oxides of nitrogen making the environment worth breathing. The power output associated with Rinnai V65EP is 10300 BTU to 150000 BTU. It offers warranty 60 months warranty on parts, 120 months warranty on the heat exchanger, and a year labor warranty.

Key Features

  • Flow rate up to 6.6 GPM
  • 103000 BTU to 15000 BTU output
  • Energy rating factor up to 0.82
  • Temperature range 98 degrees F to 140 degrees F
  • Control-R technology

2. Rinnai RL94EP

  • Wi-Fi connection
  • High efficiency
  • Technically more advanced
  • Impressive components quality
  • A little bit more expensive

Let’s discuss the RL series of Rinnai which is a successor of the V series models of Rinnai. RL tankless water heaters are usually specified with a high flow rate. Their flow rate is as much high sufficient for large families. Categorized in whole-home tankless water heaters, it gives an endless supply of consistent hot water.

RL models have a uniform energy factor of 0.81 to 0.82. These models are available in both propane and natural gas. Rinnai RL94EP is a propane tankless water heater. This can be installed outdoor only. It has a flow rate of 9.4 GPM which is approximated to endless hot water of more than six showers simultaneously. This provides enough water to fulfill needs of large family.

As compared with V models, Rinnai RL94EP has isolation valves. These valves stop the flow of water in some specific direction and provide safety to the users. Rinnai RL94EP is capable of Circ-Logic. This technology performs the recirculation of water inside the tankless water heater. Recirculation technology is in very few tankless water heaters as it increases the efficiency of the heater and gives hot water to the user instantly when the user opens the faucet.

This model is also Wi-Fi connected. All these attractive features make it the most-reviewed tankless water heaters. Rinnai RL94EP is a little bit more expensive than other tankless water heaters.

Key Features

  • Flow Rate Up to 9.4 GPM
  • Circ-logic technology
  • Includes isolation valves
  • Uniform energy factor up to 0.82
  • 60 months warranty on parts
  • 120 months warranty on heat exchanger
  • 1-year labor warranty

3. Rinnai V53DeP

  • Wi-Fi enabler
  • High efficiency
  • Vacation mode
  • Outdoor installation
  • Need to buy a temperature control

Every model of Rinnai has some specificity and gets popularity with that specificity. Now, talking about another model of the V series of Rinnai, which is also good to use in an average house of 3 to 4 members. These appealing features help it to remain in the list of best Rinnai tankless water heaters.

Rinnai V53DeP not only has all the features of V models but also has less price compared with other models of respective series. It provides the flow rate up to 5.3 GPM. This GPM rate provides enough hot water for a small family. Due to control-R technology, users can easily control their temperature through mobile phones. Also, they can put the heater on vacation mode without moving towards the heaters. The vacation mode saves energy from wasting when the user is not using the heater.

This model has very high efficiency. Rinnai V53DeP is featured with an outdoor installation thus saves space inside the user’s house. People with small houses don’t have to worry about space. Like its other family members, it also offers a 12-years warranty on heat exchangers, a 5-years warranty on parts, and a labor warranty of 1 year.

Key Features

  • Flow rate up to 5.3 GPM
  • Energy rating factor up to 0.82
  • Control-R technology
  • Temperature range 98 degrees F to 140 degrees F

4. Rinnai RUC98iN

Rinnai RUC98iN
  • Low emission of nitrogen oxides
  • Energy-star certified
  • MC-91-2US temperature controller
  • Condensing tankless water heater
  • Quiet appliance
  • Relatively high price

RU series is one of the recent series of Rinnai. This series is a further advanced version of the V and RL series. The tankless water heaters of the RU series lie in the premium list of tankless water heaters. Their prices are usually higher than ordinary tankless water heaters. It is featured with flow rate up to 9.8 gallons per minutes. Thus spending a little bit more money does not waste as it fulfills the hot water need of a full family.

Rinnai RUC98iN is designed in such a way that it can easily be installed inside the houses. It has a very small size the user does not have to worry about more space coverage. Multi-functional Rinnai is also a very elegant look. It also looks great inside the houses. It has a temperature display LED in the front. Although it has modern technologies to control the temperature of the water, the temperature can also be controlled through the touch button right beside the temperature displaying LED.

Modern Circ-logic technology enables users to control the water temperature as per their requirements. User does not have to worry about the heater activation or other maintenance as they can do this through their cell phones. Its maximum output power rate is 199000 BTU which is much higher compared to other highly rated brands. The lower emission of nitrogen oxides makes it more environmentally friendly. It also has concentric or PVC vents pipes installation for the emission of burnt gases. Voice enabler is also the best option in this tankless water heater. These features make it the best on-demand tankless water heater.

Key features

  • Flow rate up to 9.8 GPM
  • Digital temperature display
  • Temperature range of 98 degrees F to 140 degrees F
  • Circ-Logic technology
  • The maximum output rate is 199000 BTU
  • High efficiency
  • Uniform power factor of 0.96

5. Rinnai RL75IN

Rinnai RL75IN
  • Technically more advance
  • Uniform energy factor up to 0.82
  • Wi-Fi enabler
  • Some users complain about its warranty

Some higher RL series members have also advanced features just like the RU series. Rinnai RL75IN is operated by natural gas. It has significant features that compete with other series models. It has a significantly high flow rate up to 7.5 GPM. People with average families can prefer this to install in their homes.

Rinnai RL75IN can be used not only for residential uses but also for commercial uses. While using it for residential purposes, it provides a temperature range of 98 degrees F to 140 degrees F. Also, the MC-91-1US temperature controller comes with it. This controller helps the user to control temperature and also indicates error code. If you are using it for commercial purposes, then it provides a high temperature up to 160 degrees F. The controller for commercial uses has to buy separately.

It provides a high thermal efficiency of 82 %. The heat capacity of this Rinnai tankless water heater is very high. The heat capacity range that it can provide is between 10300 to 180000 BTU. Like other models of this family, it also enables through Circ-Logic technology. This model can be controlled by various forms of methods. In addition to the temperature controller and circ-logic technology, it can also be enabled through Wi-Fi. Rinnai RL75IN uses natural gas as an input power source and is installed inside the home. It has a compact size thus does not occupy much space.

Key Features

  • Flow rate up to 7.5 GPM
  • Temperature controller MC-91-1US
  • Circ-Logic technology
  • 82 % thermal efficiency
  • Residential temperature range is 98 degrees F to 140 degrees F
  • The commercial temperature range is 98 degrees F to 160 degrees F
  • Output power rate up to 180000 BTU
  • 60 months parts warranty
  • 120 months heat exchanger warranty
  • 12 months labor warranty

6. Rinnai RUCS75iN

Rinnai RUCS75iN
  • High-efficiency appliance
  • Energy-saving device
  • Wi-Fi connection
  • Vacation mode
  • Less emission of oxides of carbon
  • Elegant design
  • High activation pressure is required

RUC series is another series of Rinnai has an energy factor rating of 0.85 to 0.90. It is operated by natural gas. This series is also introduced after the RL series. This series is similar to both RL and RU series except for one or two features.

RUCS75iN is one of the successor of the RUC series. It comes up with a flow rate of 7.5 GPM. The tankless water heater with this flow rate is high enough to provide endless hot water to families of 5 to 6 members. This is a very energy-efficient appliance. It provides consistent hot water to the users so that they do not have to wait long for their desired temperature water.

The Control-R app is the best feature in all the models of Rinnai. Users can easily change the temperature of the water heater through this app. Users can also put this tankless water heater in vacation mode when they are not at home or not using the heater. This enhances the thermal efficiency of tankless Rinnai water heaters. It uses approximately 40 % less energy thus saves energy.

Like other models of this brand, Rinnai also offers 12 months labor warranty, 60 months warranty on parts, and 120 months warranty on the heat exchanger. Looking into its safety, it meets all the standards of safety of the US and Canada. It is also energy star certified. There are no batteries required for the ignition of its burner. With all these features, it has also a special feature of easy installation.

Key features

  • Flow rate up to 7.5 GPM
  • Rating of energy factor up to 0.90
  • Control-R app
  • 5-years parts warranty and 12-years heat exchanger warranty
  • 1-year labor warranty

7. Rinnai RU180iN

Rinnai RU180iN
  • Low utility bills
  • Power saving appliance
  • Environmental friendly appliance
  • Technically more advanced
  • Touch screen temperature control
  • Some users complain about water temperature
  • Professional installation is required

One of the modern series of Rinnai is the RU series. This series is featured with all the advanced technology. That’s why it catches the attention of viewers very easily. These series are designed keeping in view the needs of a large family. It is a single operating appliance to fulfill the need of the whole family rather than installing multiple heaters in a single house. Like other members, it offers 60 months warranty on parts, 120 months heat exchanger warranty, and a labor warranty of a year also.

For large family usage, a high flow rate is required. Rinnai RU180iN has a very high flow rate up to 10 GPM. Circ-Logic technology is also integrated into it for the recirculation process. The recirculation process causes the water to flow from the tankless heater and remains hot. So, users can easily get a consistent supply of hot water instantly. Connection of external pump increases its efficiency. Thus, it saves time for the user by providing hot water wherever or whenever someone needs it.

Talking about the protection it can provide then it is enough to say that it is energy star qualified. It emits very low oxides of carbon and nitrogen providing a safe atmosphere for the users. This environmentally friendly appliance is also approved by South coast air quality management. Also, it has a uniform energy factor of 0.92. Rinnai RU180iN uses energy only when working or someone is using hot water. Thus it saves energy and also decreases the utility cost. If we look at all these premium features and its whole-home supply water quality then its price is great. It is good to install a single unit instead of three units at the same price.

Key features

  • Activation flow rate 10 GPM
  • Circ-Logic technology
  • Uniform energy factor of 0.92
  • Energy-star certified
  • Voice activation
  • LED temperature display

8. Rinnai RUR199iN

Rinnai RUR199iN
  • Energy-saving appliance
  • Low utility bills
  • Voice activation
  • If the power goes out, the user has to do all the temperature setting again

The latest model series of tankless water heaters is RUR models from the SENSEI SE+ series. They are the best tankless water heaters. These models are featured with all the best and advanced features. It can compete with any tankless water heater from any other highly rated brand. Talking specifically about Rinnai RUR199iN, as shown by the name it is a natural gas-operated tankless water heater.

Starting with its flow rate, it has a flow rate of up to 11 GPM. This flow rate is very large. It provides endless hot water. You can say easily say about this that you will never be deficient of hot water. A rough approximation can be made about this that it can provide hot water to almost six showers and 4 sink usage simultaneously without running out of water. This is super cool for a large family. It has a uniform energy factor of 0.93 and a rating energy factor up to 0.96.

For recirculation technology, ThermaCirc360 technology is fabricated. This allows the recirculation of hot water in certain patterns. It usually matches its recirculation pattern according to the user’s usage. Thus, reducing the waiting time for users. The recirculation property is very less common in other brands. It provides instant hot water only when someone needs it. Thus it does not waste any extra energy. This energy-saving property also reduces utility bills.

Rinnai RUR199iN is also controlled through the app. Thus, voice activation is also enabled in this feature. It also offers a long-term warranty on its tankless water heaters just like other family members.

Key features

  • Flow rate up to 11 GPM
  • ThermaCirc360 recirculation technology
  • Energy star qualified
  • Uniform energy factor of 0.93
  • Low energy consumption
  • Digital temperature display

9. Rinnai Indoor V75IN

Rinnai Indoor V75IN
  • Vacation mode
  • Enhanced scale detection
  • Shut off when detects any leak
  • Takes some time to heat water

Once again this model is from the V series of Rinnai tankless water heaters. People may think that it is one of the oldest series of Rinnai. Then how many of these series models can stand in the list of best Rinnai tankless water heaters? The simple answer I can give that it has a low price as compared with other tankless heaters of this brand.

Other models of the V series discussed here till now are all propane tankless water heaters. While the Rinnai V75iN is a tankless water heater operated through natural gas. It is usually best to use it in the areas where natural gas is easily available. Having a flow rate up to 7.5 GPM, it is enough to supply hot water to an average family. In contrast with other family members, it has a digital temperature display and touch screen temperature control buttons at the front of the heater.

Just like other \v series family members, it can also be operated through Control-R. This app makes it easy for users. People can control their appliances through their phones no matter where are they. Isn’t it cool? The presence of vacation mode also saves energy and increases the efficiency of this tankless water heater. This model is good concerning its feature at such a reasonable price.

Key features

  • Flow rate up to 7.5 GPM
  • Control-R technology
  • Energy factor rating up to 0.82
  • Consumes less energy
  • Temperature range of 98 degrees F to 180 degrees F

10. Rinnai Indoor RL94IN

Rinnai Indoor RL94IN
  • Mobile app R 2.0
  • Low utility bills
  • Modern features
  • Highly durable appliance
  • Parts are easily replaceable
  • Mobile app issues sometimes, need to reinstall

Rinnai RL94IN also stands in the list of best tankless water heaters. Models of RL series are usually not designed for the whole house. As they are not able to provide enough hot water that can fulfill the hot water needs of the whole family. When someone looks towards it, he/she can surely confuse it with tankless heaters of the modern series of Rinnai as they resemble a lot with them.

It has a temperature displaying LED in the front. Also, the temperature can be controlled through touch screen technology embedded just beside the LED. Ordinary tank heaters have a life span of almost 8 to 10 years. But Rinnai tankless heater has a greater life cycle of almost 20 years. This life span can also be increased through proper maintenance care. Recirculation in this tankless water heater can be performed through Circ-Logic technology. Rinnai RL94IN comes with isolation valves that prevent the flow of water to undesirable places.

Key features

  • Flow rate up to 9.4 GPM
  • Circ-Logic recirculation technology
  • Uniform energy rating factor 0.82
  • Highly efficient
  • Temperature can be controlled
  • No batteries required

Rinnai Indoor RL94IN

Ultimate Buyer’s Guide for Best Rinnai Tankless Water Heater

Rinnai tankless water heaters have the best features and people can surely select them. But keep in mind your needs while purchasing any tankless water heater. Following are the Buyer’s Guide to Buy Best Outdoor Rinnai Tankless Water Heater:

Hot water supply: Rinnai water heaters provides continuous supply of hot water. The existence of tankless rinnai water heater provides an assurance of hot water for long time usage. It will never let users face any problem regarding hot water in winters.

Installation

As the Rinnai tankless water heaters are small in size so they occupy less space. This features allows user to install it anywhere in their houses. Some tankless water heaters of Rinnai are small enough to get adjusted even in a small cabinet or under the sink. Also, the installation of many models of rinnai do not need professional technicians. Only a few higher models need a professional one to fit these tankless water heaters.

Fuel consumption

The Rinnai tankless water heaters are available in different fuel consumption varieties. Even each of its models can vary in terms of activation through natural gas or propane. In fact, some of the models are electricity operated. Hence, the rinnai gives opportunity to users to choose the desired model according to the availability of fuel.

Venting

When the tankless water heaters are in running mode, they release different gases which are harmful for human health. When tankless water heaters are installed inside the houses, the steam coming out of this also become dangerous. So, users should go for a tankless water heater with a proper ventilation system.

Flow rate

Flow rate is measured in gallons per minute (GPM). This is one of the most important features of any type of tankless water heater. People using it for outdoor purposes usually do not require a high flow rate. A high flow rate is required when people want to use the tankless water heater for the whole house.

Weather conditions

When we talk about indoor tankless water heaters, the weather conditions do not affect the efficiency of the heater. But when the heater is installed outdoor, weather conditions like stormy winds, rain, etc. Try to buy an outdoor tankless heater that is resistant to such weather conditions.

FAQs

What makes Rinnai tankless water heaters different from other brands?

Rinnai has a different series of tankless water heaters. Each series has some specific features. The thing that makes a difference from other brands is that anyone can use it. It has flexibility either to use for small houses, or large families, or whatever you want, etc.

Why Rinnai tankless water heaters are more expensive than others?

Rinnai tankless water heaters are fabricated with more modern technologies than others. Also, they provide multi-functions and are more efficient than others. That’s why they are more costly than other tankless water heaters.

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