Best Rinnai Tankless Water Heater Reviews For 2018 – 2019

It’ll be my privilege to take you down some of the Best Rinnai Tankless Water Heater Reviews for this year 2018 – 2019.  I believe you’ll not be disappointed in my top 10 pick of rinnai water heaters as they are known by consumers for their performance.

Although there’re plenty of companies that are into manufacturing of hot water supply heaters but Rinnai brand is one highly and well respected brand among customers.

Many amazon reviewers remarkably distinguish their product to provide high value for the money. Nevertheless, they’ve water heaters that can be use for residential settings and also commercial tankless heaters as well.

Even if you’re looking forward to install a hot water in your mobile home or stores, falling back to the award-winning home heating appliance manufacturing company, you will able to pick a unit for this purpose. 

You may also check my previous post on Takagi hot water heater reviews or better still continue with me this rinnai discussion.  

Product Name Features
Rinnai RL75IN
Best Rinnai Tankless Water Heater Reviews
Rinnai RL75IN


• 7.5 GPM
• Weight: 50 pounds
• Dimension: 14 x 9.3 x 23 "
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Rinnai RL75eNRinnai RL75eN

• 7.5 GPM
• Weight: 43.6
• Dimension: 14 x 10 x 23 inches
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Rinnai V65IP
Rinnai V65IP


• 6.6 GPM
• Weight: 49.6 pounds
• Dimension: 13.9 x 8.8 x 23.6 "
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Rinnai V75IP
Rinnai V75IP


• 7.5 GPM
• Weight: 49.6 pounds
• Dimension: 14 x 9 x 23 "
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Rinnai RL94IPRinnai RL94IP

• 9.4 GPM
• Weight: 44.3 pounds
• Dimension: 14 x 10 x 23 "
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Rinnai RL94ePRinnai RL94eP

• 9.4 GPM
• Weight: 44.3 pounds
• Dimension: 14 x 10 x 23 "
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Rinnai V53e-NG
Rinnai V53e-NG


• 5.3 GPM
• Weight: 35 pounds
• Dimension: 7.7 x 13.8 x 21 "
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Rinnai V75EN
Rinnai V65EN


• 9.4 GPM
• Weight: 44.3 pounds
• Dimension: 14 x 10 x 23 "
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Rinnai V65EN
Rinnai RU80EN


• 6.5 GPM
• Weight: 47.4 pounds
• Dimension: 13.8 x 6.8 x 20.9 "
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Rinnai RU80EN
Rinnai V75iN Natural Gas Indoor Tankless Water Heater (7.5 GPM)


• 8.0 GPM
• Weight: 70.5 pounds
• Dimension: 18.5 x 10.7 x 26.4 "
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Reviews of 10 Best Rinnai Tankless Water Heater from 2018 – 2019

1. Rinnai RL75IN vs Rinnai RL75eN Reviews

Best Rinnai Tankless Water Heater Reviews
Rinnai RL75IN
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Rinnai RL75eN
Rinnai RL75IN
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Beginning this review, Rinnai RL75IN is best for larger families or household while Rinnai RL75eN is best for family size of 3 persons. While you put that feature into consideration, we also look at the prices of each unit.

Rinnai RL75IN prices is higher to the Rinnai RL75eN model and this is attributed to the heavy duty materials that’s makes it up. However, the first unit cost $1,471.00 while the later $1,014.52, so this is where your budget define the quality and functionality on the water heater you desire.

The Rinnai RL75IN features residential temperature settings of 98°F – 140°F while its rival Rinnai RL75eN temp wasn’t specify at the time of compilation of the reviews. Also, they both have commercial settings of 98°F – 160°F but you need to purchase the commercial controller separately for each of the water heaters. 

More so, the two rinnai tankless heaters features mc-91-1us digital controller and also installed with error code indicator that tells you if your heater is malfunctioning. Another similar, you find in these rinnai tankless Rinnai RL75eN vs Rinnai RL75IN heaters is thermal efficiency of 82%. 

One major high point with Rinnai RL75eN tankless water heater, it’s compatible with Wifi which is not available in Rinnai RL75IN. Furthermore,   Rinnai RL75IN model feature a 10,300 – 180,000 BTU where as not specified with Rinnai RL75eN.

However, the central point of both product, they can be use in residential or commercial environments.  Also, these two units are energy saving efficient and would deliver domestic hot water on demand anytime.

2. Rinnai V65IP vs Rinnai V75IP

Rinnai V65IP
Rinnai V65IP

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Rinnai V75IP
Rinnai V75IP

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Firstly looking at the similarities of these units, both Rinnai V65IP and Rinnai V75IP are indoor tankless system. Also they are powered by propane natural gas which is considered to be more economical to electric tankless water heaters. In addition, V65IP vs V75IP feature the same energy factor of 0.82 and are made of imported parts assembled in US. 

Rinnai V75IP is listed $818.35 while Rinnai V65IP cost $671.45 and both are on sales on amazon. If you’re on low budget but looking for a unit for homes of not more than 3 populations, I’ll advise you pick Rinnai V65IP.

As for dimension, the V65IP measures 13.9 x 8.8 x 23.6 inches while the other V75IP measures 14 x 9 x 23 inches with 49.9 and 70 pounds respectively. However, the items size is not something you should worried about as either unit can fit into smaller spaces.

Talking on their water supply rate, I’ll give the rating to Rinnai V75IP featuring 7.5 gpm compare its counterpart that features of 6.5GPM. As for the BTU‘s rating, it goes to the Rinnai V75IP tankless water heater amounting to 180,000 unlike its rival of 150,000 BTU.

The 6.6gpm unit is designed with the lowest to highest water supply pressure starting from 20 – 150 but this isn’t specifying for the 7.5gpm unit. The manufacturer also stated that the Rinnai V65IP model meets Texas and California NOx emission standards. 

However, to kill the augment revolving the respective unit of discussion, I’ll say the 2 DHW heaters are nice but your budget will speak for your choice.

3. Rinnai RL94IP vs Rinnai RL94eP Reviews

Rinnai RL94IP
Rinnai RL94IP

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Rinnai RL94eP
Rinnai RL94eP

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These two products feature almost similar features, so picking one over the other may not really make any difference. Both tankless water supply heaters can be use in a commercial or residential setting.

The two units feature the same commercial temperature settings of 98 – 185 degree Fahrenheit and also residential temperature settings of 98°F – 140 degree Fahrenheit. So choosing any of these heaters in respect to temperature rise, you’ll still get the same settings.  

Another common things, Rinnai RL94IP and Rinnai RL94eP are equipped with digital controllers which also features error code indicator.

Another feature that brings the RL94eP and RL94IP model into the same class is their BTU value 10,300 – 199,000 of equal range. They also feature the same thermal efficiency rate of 83 percent and also both units have deliver up to 9.4 capacity of hot water per minute.

Moving down to the features that put them off on different class then we’ll be looking at the area of installation. As for Rinnai RL94IP model, it is designed for indoor mounting while requiring the vent to be directed outside the building. However, the Rinnai RL94eP model require outside mounting which I suggest for those that have indoor space challenge to purchase.  

Price is another constrain that may hinder you decision on which one to pick. However, with$1,233.90+ you can pick up theRinnai RL94eP on amazon.com or spend up to $1,801.00 on amazon to buyRinnai RL94IP.

To draw the curtain close on this items we are currently talking about, both can supply hot water up to 5 outlets instantaneously while still saving up to 40 percent of energy bills.

4. Rinnai V53e-NG vs Rinnai V75EN

Rinnai V53e-NG
Rinnai V53e-NG

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Rinnai V75EN
Rinnai V75EN

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So far in this reviews of best rinnai tankless water heaters, Rinnai V53e-NG vs Rinnai V75EN are the cheapest among them with price lower than $thousand. If you don’t have enough money to invest on the highest price tag units then making your choice from these two units will also help you get hot water whenever needed. 

Take note, the Rinnai V53e-NG vs Rinnai V75EN models respectively are both outdoor unit. This simply means, they can’t be installed inside house instead outside. So, if you’re looking for water heaters for indoor placement, check other models as discussed on this page individually.

Further looking into the features of the two items in comparison, they supply hot water with the help of natural gas fuel.  They are also tested and certified for mobiles homes use. However, these rinnai water hot heaters are my best recommendation for anyone looking for tankless heater for mobiles homes installation.  Why do I recommend them? They are compact and very lightweight design. 

Most relevant, Rinnai V53e-NG supplies only 5.3 gpm of water. Hence it should not be use for more than two bathrooms at a time.  While Rinnai V75EN can provides up to 7.5 gallon of hot water per minutes. However, can be use for 3 bathroom use simultaneously.

5. Rinnai V65EN vs Rinnai RU80EN Reviews

 Rinnai V65EN
Rinnai V65EN

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Rinnai RU80EN
Rinnai RU80EN

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To round up rinnai tankless water heater reviews up comes the Rinnai V65EN vs Rinnai RU80EN from the hallmark brand known for water heating system making.

After examining all the features of these 2 rinnai heaters closely, thereby concludes Rinnai RU80EN to be more sophisticated and more powerful. For instance supplies up to 8 gallon of hot water in minute while Rinnai V65EN supplies 6.6gpm.

Although the two units are require outside base installation but you will spend more money to purchase Rinnai RU80EN model because it’s more costly.

RU80EN has a dimension of 18.5 x 10.7 x 26.4 inches and V65EN 13.8 x 6.8 x 20.9 inches. This feature is not any relative importance as both units are outdoor base.

Also, these rinnai tankless heaters meet both California and Texas NOx emissions standards making them safe for use in these countries. More so, either units will help you reduced energy cost as energy rated tankless hot water supply heaters.  

To finalize your decision, Rinnai V65EN is ideal for families of maximum 2 bathrooms supply while the other can be use for up to 3 bathrooms. But I must tell, none of them will disappoint you in supplying the hot water you need.

Final words

We’ve discussed top 10 best rinnai tankless water heaters while comparing two units against each other. However, by doing this, finding and checking out their pros and cons will be easier. The most important thing is for you to look at them closely for you to pick the best unit that will supply hot water to your home efficiently.