7 Best Rinnai Tankless Water Heater Reviews & Guides

Water heaters are indeed an essential part of a home, for, without them, you wouldn’t be able to take a hot bath in the chilly mornings or do the dishes. When it comes to tankless water heaters, you are not without options. Rinnai tankless water heaters are top-selling water heating units and highly rated by the homeowners.

7 Best Rinnai Tankless Water Heaters of 2019 on the Market:

IMAGEPRODUCTDimensionsWeight
Natural Gas
RinnaiRL75eN
Rinnai RL75eN Tankless water heater14 x 10 x 23 inches43.6 poundsCHECK ON AMAZON
Propane

Rinnai RL94iP

Rinnai RL94iP14 x 10 x 23 inches44.3 poundsCHECK ON AMAZON
Outdoor Propane
Rinnai V65EP 6.6 GPM Low NOx 
Rinnai V65EP 6.6 GPM9 x 14 x 23 inches47.4 poundsCHECK ON AMAZON
Natural Gas
Rinnai RL75iN
Rinnai RL75iN14 x 9.3 x 23 inches50 poundsCHECK ON AMAZON
Indoor Natural Gas
Rinnai V65IN 6.6 GPM 2020
Rinnai V65IN 6.6 GPM13.9 x 8.8 x 23.6 inches49.4 poundsCHECK ON AMAZON
Propane
Rinnai RL94eP 2020
Rinnai RL94eP9.6 x 14 x 24.3 inches44.3 poundsCHECK ON AMAZON
Ultra Series
Rinnai RUC98iN Ultra Series 2020
Rinnai RUC98iN10 x 18.5 x 26 inches61.7 poundsCHECK ON AMAZON

About Rinnai:

Rinnai Corporation is a Japanese multinational company based in Nagoya, Japan. It was founded in 1920 by Hidejiro Naito and Kanekichi Hayashi. The company first produced pressurized oil stoves. By the early 1930s they expanded into:

  • Gas appliances
  • Space heaters
  • Ranges
  • Gas hot water units
  • Cooking stoves

Then in 1964, Rinnai succeeded producing its first efficient water heaters. It is the number one selling brand of tankless water heaters in North America. The company has announced its exciting products that include:

  • New M-Series Condensing Boiler
  • Next-generation Sensei™ Tankless Water Heater
  • New Demand Duo™ 80 Hybrid Commercial Water Heaters

It is interesting to know that more than thirty million Rinnai tankless water heaters have been installed all over the world.

Rinnai Tankless Water Heaters Reviews:

Rinnai is a brand that has always been known for innovation. It is a company that is dedicated to finding the best technology to make the best tankless water heaters. Here we are providing a detailed review of seven best Rinnai tankless water heaters that were in the top-selling list. So, without further ado, let’s have a look:

1. Rinnai RL75eN Natural Gas Tankless Water Heater:

Best Industrial Tankless Water Heaters 2020

With the thermal efficiency of 82%, Rinnai RL 75eN natural gas tankless water heater grabs your attention right away.

Features:

Easy to install:

The forts feature that makes it one of the best hot water tankless heaters is its easy installation. ½ inch gas line can be used for direct installation; however, many customers say that 3/4gasline is still be used.

Continuous supply of hot water:

The unit has a flow rate of 7.4 gallons per minute. It can support two bathrooms and two sinks simultaneously. You will not run out of hot water during shower as the unit provides an endless supply of hot water.

Remote control:

The best part of the Rinnai RL75eN Natural gas tankless water heater is that it comes with a remote control that enables you to control water temperature even from a remote location. Also, it can be controlled by Wi-Fi system. All you have to do is to link the Wi-Fi, and you would be able to control the temperature.

Freeze protection system:

You have installed the unit outdoor, then don’t worry if the temperature outside gets too low. The unit comes with the freeze protection system that senses the low temperature and automatically starts taking measures to protect itself from freezing.

Pros:

  • Easy installation
  • Freeze protection system
  • Wi-Fi control
  • Remote control
  • Supports two bathrooms and two sinks easily
  • The flow rate of 7.4 GPM
  • Endless supply of hot water
  • Commercial use available

Cons:

  • The unit creates noise while working
  • Expensive if the home does not need 7.4 GPM flow rate
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It is an energy-efficient and eco-friendly tankless water heater that is worth investing in. The flow rate is quite high to meet the needs of multiple bathroom use.

Features:

Flow rate:

The flow rate of the unit is quite high, as already stated above. With a flow rate of 9.4 gallons per minute, it can meet the demands of a large home.

Energy-efficient:

Most homeowners want to install a water heating unit that is energy efficient. They do not want to pay huge amounts as energy bills every month. Rinnai RL94iP is powered by propane gas. It uses less fuel and helps you save a few bucks every month on energy bills.

Endless supply of hot water:

What do you want on a winter morning? A nice hot bath, of course! Rinnai RL94iP supplies hot water without any interruption. It supports two bathrooms and three faucets at the same time. You will not run out of hot water during your hot shower.

Pros:

  • Consumes less fuel
  • Energy efficient
  • Easy to operate digital control
  • Highly efficient unit
  • The flow rate of 9.4 gallons per minute
  • Leak detection system
  • Freeze protection system
  • Temperature lock
  • Built-in circ logic circulation system
  • Endless supply of hot water

Cons:

  • Coldwater sandwich
  • Expensive fitting
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It is an outdoor tankless water heater, so no venting is required. It is powered by propane, so it consumes less energy and saves money as compared to electrical tankless water heaters.

Features:

Safe installation:

It is a safe unit to install, and you can install it by yourself easily if you have any knowledge about the plumbing work. The enhanced scale detection system reduces the chances of serious damages to the unit.

Supports multiple taps:

The unit supports two bathrooms simultaneously.

Continuous supply of hot water:

The unit provides a continuous supply of hot water when you turn the tap on. However, you may wait for a few seconds to get hot water if you turn the tap off.

Natural gas and propane use:

It is a propane tankless water heater, but the best part is that it can use natural gas as the main power too. The energy factor of the unit is 0.82, which is quite low.

No water waste:

The unit does not make noise while working. It does not take much time to heat water, so less water is wasted.

Lightweight and compact:

It is a lightweight and compact tankless water heater, so you can install it anywhere as per your needs.

Remote control:

It comes with remote control, which enables you to control the water temperature no matter which room you are in.

Temperature lock:

The unit features a temperature lock that prevents unauthorized changes.

Pros:

  • Enhanced scale detection
  • Fast heating time
  • Smart temperature lock to avoid unintentional touches
  • Low NOx design
  • The flow rate of 6.6 gallons per minute

Cons:

  • You need to wait to get hot water if you turn the tap on.
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It is a unit that can outperform any conventional tank water heater in both longevity and delivery.

Features:

Endless hot water:

It provides an endless supply of hot water and supports two bathrooms simultaneously.

Thermal efficiency:

The thermal efficiency of the unit is 82%, which is low, but still, it can outperform a tank water heater.

Commercial and residential use available:

The best thing about Rinnai RL75iN natural gas tankless water heater is that it is suitable for both commercial and residential use.

Flow rate:

The maximum flow rate of the unit in 9.4 gallons per minute, which means you will be getting a continuous supply of hot water.

The easy control PC board:

The unit comes with a digital controller with error code indicator that enables you to see the temperature on the control panel. It makes it easy to adjust the temperature.

Pros:

  • Quite working condition
  • High tech combustion design
  • Easy digital control
  • Commercial and residential use available
  • On-demand water heater
  • Installation is fairly simple and easy
  • Reasonable price

Cons:

  • Coldwater sandwich
  • Need to install it carefully using bells and whistles
  • Venting kits can be hard to install
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Tankless water heaters are better than tank water heaters, for they occupy less space and are energy efficient. Rinnai is a popular brand that is making tankless water heater for both commercial and residential use. Rinnai V65IN 6.6 GPM tankless water heater is powered by natural gas. It is installed indoor, so you need to get a venting kit installed along.

Features:

Easy installation:

It is easy to install the unit. If you have basic plumbing knowledge, then you can install it on your own. It will save you the installation cost. But if you do not know anything about plumbing, then it is better to call a professional plumber.

Light in weight:

It is a lightweight water heater as compared to the other Rinnai tankless water heaters.

Maximum BTU:

Higher the BTU input faster the performance. Maximum BTU of Rinnai V65IN 6.6 GPM natural gas tankless water heater is 150,000.

Low NOx design:

The unit is low NOx design, which means it reduced the emission of greenhouse gases.

Quiet working conditions:

It is an efficient tankless water heater that helps you save money on energy bills. The best part is that it works quietly and smoothly, just like the other Rinnai tankless water heaters.

Pros:

  • Durable and safe
  • Flawless hot water
  • Leak detector
  • Energy efficient
  • Environment-friendly
  • Ultra-compact design
  • Suitable for mobile homes
  • Compact and lightweight
  • Indoor installation
  • Easy installation

Cons:

  • Low energy rating
  • Periodic clean and flush
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It is powered by propane, which means it saves more on energy bills as compared to electrical tankless water eaters. It is an indoor tankless water heater so, venting kits are required.

Features:

Installation:

The installation of the unit is fairly simple, and it can be mounted on both interior and exterior walls. But make sure that the venting system is exposed to fresh air. You need to take care of the unit as it can’t get wet.

Multiple bathroom use:

The unit has a flow rate of 9 gallons per minute, which means it can provide water to multiple bathrooms.

Energy-efficient:

It is an on-demand water heater, so it only consumes energy when needed. It does not take much time to heat water, so you will be able to save money on energy bills.

Digital control:

The unit features a digital control that is easy to use, and you can set the temperature without any difficulty. It comes with the error code readout that helps you to use the unit safely and quickly.

Pros:

  • A powerful unit that supports multiple bathrooms
  • High flow rate makes it perfect for both large and small homes
  • Turns on only when you need hot water
  • Highly efficient and money saver
  • Easy operating control panel

Cons:

  • Long waiting time for hot water
  • Requires venting system
  • The flow rate may change according to the weather outside
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It is a tankless water heater that used natural gas as the main power source.

Features:

A constant supply of hot water:

The unit has a flow rate of 9.8 gallons per minute, which means it can support two to three bathrooms according to the outdoor climate. It supplies hot water continuously.

Commercial use available:

With the temperature up to 185 degrees F, it can be used for commercial purposes as well, but you need an extra commercial remote.

Quiet working conditions:

It does not create much noise while working. In fact, you can hardly hear the noise. The unit heats the water in 20 seconds, which saves your money on energy bills every month.

Energy-efficient:

It is one of the best Rinnai tankless water heaters that have an energy-efficient rating of up to 95%.

Venting options:

It is a natural gas tankless water heater that provides two venting options concentric PVC and twin pipe.

Pros:

  • Longer lifespan than a tank water heater
  • Optional venting method
  • Energy efficient
  • Money saver
  • 5 years warranty on parts
  • Supports multiple faucets
  • Takes up less space
  • Continuous Supply of Hot Water

Cons:

  • Expensive
  • Need professional help to install it
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Rinnai Electric Tankless Water Heater:

Rinnai is a famous brand that produces the best tankless water heaters. But the company is an expert in making propane and natural gas tankless water heaters. They do not make an electric model because there are several potential drawbacks to electric tankless water heaters. The relative operating cost of electric models is much higher than the gas tankless water heaters.

However, if you are looking for some best electric tankless water heaters for your home or office, then you should check our electric tankless water heater reviews.

Rinnai Propane Tankless Water Heaters Reviews:

Installing a tankless water heater is a good idea as it can reduce your monthly bills considerably. Propane tankless water heaters are a great option, for they are powered by propane and save money than electric tankless water heaters. Let’s have a quick look at propane tankless water heater reviews:

1. Rinnai RL94iP Propane Tankless Water Heater:

Rinnai RL94iP

It is an energy start qualified and certified tankless water heater. With a flow rate of 9 gallons per minute, it is a perfect water heater for large homes. The unit has a thermal efficiency of 83%. The unit automatically shuts off the power supply in case of any leak to prevent damages.

2. Rinnai V65EP 6.6 GPM Outdoor Tankless Propane Water Heater:

Rinnai V65EP 6.6 GPM Low NOx 

It is a Rinnai tankless water heater that has a compact design which enables you to install anywhere. The unit efficiently delivers up to 6.6 gallons per minute. The unit is easy to install and saves energy too.

3. Rinnai RL94eP Propane Tankless Water Heater:

Rinnai RL94eP 2020

It is a strong and effective unit that supplies hot water at a flow rate of 9 gallons per minute. If you are looking for a small unit that Rinnai RL94eP is perfect for you as it weighs only 6 pounds. Since it is an indoor tankless water heater, no venting is required.

Rinnai Tankless Gas Water Heaters Reviews:

Rinnai Tankless water heaters are top-selling and highly rated water heater by homeowners. They are energy-efficient and compact in design, which makes them popular in the market. We have pulled together different types of Rinnai tankless gas water heater reviews for you to help you make your buying decision.

Large flow rate tankless gas water heaters:

Rinnai RL75iN Natural Gas Tankless Water Heater

Rinnai RL75iN

Best Commercial Rinnai Gas Tankless Water Heaters:

Rinnai RL75iN Natural Gas Tankless Water Heater

Rinnai RL75iN

Rinnai Tankless Water Heater Cost:

Rinnai is a top-selling brand in the market. You have decided to install a tankless water heater in the house, but what is the cost of a Rinnai tankless water heater? Is it expensive? Well, the price of Rinnai tankless water heaters is different according to the model, type, and specifications. If you want to install a large flow tankless water heater, then remember its price is relatively high.

If you lack a budget, then you can choose any other brand or choose a tankless water heater with a low flow rate.

The installation cost also affects the buying decision. You need to get professional help while installing a Rinnai tankless water heater, so you must have a budget for that too. You should not try to install a Rinnai tankless water heater by yourself if you don’t want to end up damaging the unit.

Though the price of Rinnai tankless water heaters is a bit high, it is still worth paying when you see the performance. They are energy efficient, which means you would be able to save money on energy bills every month. They are compact, which means you can install them anywhere. Also, they come with a ten years warranty on the heat exchanger.

You want to install a Rinnai tankless water heating unit in the house then check the price on Amazon, where you will get a discount too.

Is Rinnai The Best Tankless Water?

When it comes to buying a tankless water heater, you may easily get confused with so many options available out there. There are many famous and leading brands in the market, and it becomes quite difficult to decide which one is the best, even when you have enough budgets.

Each brand has its own specifications and features. In order to decide which one is the best, you need to check the pros and cons of each product and then decide. You should be aware of your hot water needs before buying a tankless water heater.

Many units provide a large flow rate to meet your large hot water requirements. Some units are more energy efficient. You have to decide what your needs are and which tankless water heater would fit your hot water needs.

If still, you are not able to decide what tankless water heater you should buy, then check them on Amazon.

Rinnai Tankless Water Heater Venting:

If you are installing a Rinnai outdoor tankless water heater, then no venting is required. Since Rinnai Tankless water heaters are different than others, you need to install it near the outside.

Rinnai non-condensing tankless water heaters require the aluminum interior vent pipe with PVC outer pipe.

The company claims that Rinnai tankless water heaters can be installed by ½ inch pipe. But customers do not agree with that. They complain that ¾ inch pipe is needed to install the unit. If you are installing a Rinnai tankless water heater, then do a little homework and get all the details about the venting and installation of the unit.

Benefits of tankless water heaters:

Tankless water heaters are efficient units that can outperform the traditional tank water heaters. Tank water heaters not only occupy much space in the house but also cost you money on energy bills. They consume more energy to keep water hot in the storage tank, and you have to pay huge amounts as energy bills every month.

Tankless water heaters are getting popularity due to the benefits associated with them. Let’s have a quick look at some of the benefits tankless water heaters offer:

  • Energy-efficient:

Tankless water heaters are energy-efficient, and they consume less energy. They only heat water when needed, as they do not have a tank to store water. They are on-demand water heaters, which make them perfect for households.

  • Compact:

Most people live in small and medium homes where they do not have enough space to install a tank water heater. Tankless water heaters are compact and small in size so that you can install them anywhere. Mount them on the wall or install them under sink. They will not take much space in the house.

  • Portable:

Most Tankless water heaters are small in size and light in weight. You can install them in your RV or mobile homes as well. Also, you can take them along for camping.

  • Endless supply of hot water:

Tank water heaters store hot water in the tank, and you may run out of hot water during a shower. Tankless water heaters are on-demand water heating units without a storage tank. Thus they provide an endless supply of hot water without consuming much energy.

The best thing about these tankless water heaters is that they save you money on energy bills every month. You can install these units by yourself if you have any plumbing knowledge. But it is recommended to get professional help to install the unit to prevent damages. The installation cost may be high, but it is worth paying as you get an unlimited supply of hot water without any interruption. Regular maintenance is required, and you should flush the unit at least once a year.

Last Words On Rinnai Tankless Water Heaters:

Rinnai is a popular brand that produces high-quality products for customers. The price of Rinnai tankless waters heaters is high, so you should make a decision carefully. Make sure you know the water flow rate would suit your home. You should consider the energy efficiency of the unit, too, while buying a tankless water heater. It is worth paying for the performance Rinnai tankless water heaters offer.

We have picked our top 3 best Rinnai tankless water heaters for you to make it easy to choose:

For more details, you can contact us or check them directly on Amazon.