8 of the Best Rinnai Reviews – For 2019 (Tankless Water Heaters)

Rinnai ReviewsConvenience is king in the 21st century. Ours is an era of unparalleled technological advancement, most of which is meant to streamline mundane, daily tasks. Everything, from our phones and computers to our toasters and doorbells, is getting faster, smaller, and much more functional.

With technology improving the way it is, the huge, hulking tank-based water heaters of the olden days are becoming, well, a thing of the past. It’s no surprise — they’re some of the most finicky and even dangerous household devices.

If you’ve ever owned a tank-based hot water heater, then you know how annoying it is to relight the pilot light — especially if your furnace is in some obscure corner of your house. Maybe your tank has leaked, flooding your basement and ruining your belongings. And while it happens less frequently, bad water heaters have a tendency to explode, taking part of their houses with them.

Clumsy, out-of-date, tank-based water heaters are driving more and more people to go tankless. As tankless water heater grow in popularity though, it can be difficult to navigate the saturated market and find the right unit for your needs.

RinnaiThe Japanese company Rinnai claims to be the #1 selling brand of tankless water heaters. Whether or not that’s true, they are certainly one of the most popular brands in the United States. At any rate, they have a lot to choose from! My Rinnai reviews will help you narrow down your options and find a modern and reliable tankless water heater.

8 Best Rinnai Reviews – Highlight Comparison This 2019

Prices accurate as of:

Tankless Water Heater Benefits

I’ve already discussed some of the major flaws that old-school tank-based water heaters have. In addition to the inconvenience and danger, they also don’t provide a particularly good user experience.

What do I mean by that? Well, let’s imagine that you’d like to take a shower. Depending on where in your house the heater is, you could wait for a minute or even longer for the shower to heat up. Once the hot water starts flowing, it probably won’t last long — and woe to anyone who wants to shower after you!

Older water heaters are also wasteful. Did you know that most showers use about 2 gallons of water per minute? If you have to wait for hot water to start flowing, at least 2 unused gallons of water are going straight down the drain. If you live in a water-poor location where water often gets rationed, you’re not just wasting water — you’re also losing money.

Tank-based heaters don’t just waste resources — they’re also space hogs. Think of how much extra room you’d have for storage in your garage or basement if that humongous tank wasn’t occupying its own corner.

Tankless water heaters like the ones in my Rinnai reviews can solve all of these problems. If you’re interested in knowing how they do it, read on!

Instant hot water

Despite storing huge quantities of hot water, tank-based heaters are rarely able to supply hot water right when you need it. That’s because water cools as it travels through your pipes — the longer it travels, the colder it is on arrival. You might get hot water right away if the tank is close to your sink or shower, but few people are lucky enough to have that setup.

While it might seem that tankless water heaters would take longer to supply hot water, the opposite is true. Thanks to powerful heating elements, tankless heaters can produce hot water in seconds. Some of the heaters in my Rinnai reviews also have a special circulation technology that keeps hot water flowing through your pipes. No matter where your tankless heater is in your house, you’ll never have to wait for hot water again.

Constant supply of hot water

Not only do tankless water heaters supply hot water on demand but they also keep it flowing. Tank-based water heaters take time to reheat their contents — sometimes it can take an hour or more to fully resupply. Tankless heaters, on the other hand, heat water continuously.

Remember the heating elements that I mentioned above? They heat water almost immediately as it flows through the unit. If the flow of water stays at or below your unit’s threshold, you’ll have hot water as long as the heater has a regular supply of gas.

Water and gas savings

Because tankless heaters work so quickly, you won’t need to wait. Simply turn on the shower, and hop in! The amount of wasted water can climb very high, especially in large household with a lot of members. The less water that gets wasted, the lower your monthly bill will be. It’s even better if your area often suffers from droughts — you’ll be doing your part to preserve local water sources!

While tankless heaters produce a lot of heat, they don’t require as much power as you’d think. The heaters in my Rinnai reviews run on different types of gas, including propane and natural gas.

Although their models differ on the types of gas they use, modern tankless heaters are vastly more efficient than their older, tank-based counterparts. Increased efficiency means that you’ll use less gas. And as with saving water, saving gas will also save you money every month.

water heater operational cost

Compact design

Tank water heaters take up a lot of space, and it’s not just because of their size. Because older heaters are rarely well-insulated, it’s not a good idea to store things nearby! When I was growing up, our water heater claimed a 5-square foot corner of our garage. That space would have been useful for storing other things!

In comparison, tankless water heaters are incredibly compact. Unsurprisingly, their lack of a reservoir tank cuts down on their profile. Beyond that, however, modern tankless heaters have advanced internal components that don’t require much space. Even the largest heater in these Rinnai reviews only measures 22 x 14 x 33 inches — about the size of a standard microwave oven!

So with a tankless water heater, you’ll have plenty of room to store other things. In addition, your heater will be easier to access for maintenance or temperature adjustments.

The 8 Best Rinnai Reviews

Rinnai has been making tankless water heaters since the 1920s, and their technology has only improved since then. They offer a wide variety of tankless heaters that cater towards different sized houses and households.

As a helpful tip for these reviews, Rinnai’s heaters contain useful information in their names. If the model name ends with “N,” it runs on natural gas. Names ending in “P” indicate that the unit runs on propane. If you already know which type of gas you’ll be using for your heater, you can simply check the names and skip over the models that aren’t compatible.

All of the tankless water heaters in my Rinnai reviews come with a 120-month heat exchanger warranty and 60-month parts warranty. The warranties are only valid if the unit is installed correctly, so if you aren’t confident that you can do it yourself, it’s a good idea to have a professional do it.

Decided that you’d like to buy a tankless hot water heater? Then read on — I will compare several of Rinnai’s water heaters in these Rinnai reviews to help you make the best possible choice for all your hot water needs.

1. Rinnai RUC98iN

Rinnai RUC98iN

For the first of my Rinnai reviews, I’ll be looking at Rinnai’s RUC98iN natural gas tankless water heater. If you need instant, continuous hot water in large quantities throughout your home or commercial space, this may be the unit for you.

Overview

The RUC98iN is a powerhouse of a heater that can deliver heavy flows of hot water almost instantly. Created for indoor use, the RUC98iN has a 9.8 gallons per minute (GPM) hot water capacity. And at 82 pounds and 10 x 18.5 x 26 dimensions, it’s compact enough not to be an inconvenience. It also has a minimum/maximum water pressure of 50 – 150 PSI and a minimum/maximum gas rate of 15,200 – 199,000 BTU/h.

High Efficiency

With 95% thermal efficiency, the Rinnai RUC98iN will save you money on your gas bill each month. It also means that you won’t lose heat in the air — most of it will go to the water, which is where you want it.

Dual Pipe System

If you’re looking to heat a large space, like a big house or a small office building, then the RUC98iN’s dual pipe setup may be appealing. It gives you more options for creating an efficient piping layout, which in turn will ensure that hot water arrives where you want it without delay.

Variable Venting

The RUC98iN also has versatile exhaust venting options. It’s possible to use either PVC or concentric vent pipes, though the latter style is recommended as it’s more efficient.

Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater, Twin Pipe
  • Concentric or PVC venting option
  • Up to 0.96 Energy Factor/Up to 0.92 Uniform Energy Factor
  • The space-saving design allows Indoor Installation type
  • Ultra low NOx emissions
  • 199,000 max BTU

Last update on 2019-08-17 at 04:26 / Affiliate links / Ratings / Images from Amazon Product Advertising API


2. Rinnai V65IN

Rinnai V65IN

For some people, an incredibly powerful water heater may not be necessary. Empty-nesters or singles who don’t use much water may want to settle for something a bit more modest than Rinnai’s RUC98iN. That’s why, for the second of my Rinnai reviews, I’ll be looking at the V65IN tankless heater.

Overview

The Rinnai V65IN runs on natural gas and has a maximum water flow rate of 6.5 GPM. Its lower flow rate, combined with its dimensions of 13.9 x 8.8 x 23.6 inches and low weight of 49.6 pounds, make it ideal for use within a smaller home or apartment. Its standard ¾-inch connection type means that it should be easy to install in any home.

App Integration

The ability to control your water heater via mobile app is probably something you never thought you needed. Rinnai disagrees, so they made it possible to do just that with the V65IN. If you’re uptight about saving every possible bit of energy, then you can use the app to schedule periods of lower usage throughout the day. You can also set it to vacation mode when you plan to be away from home for longer than a day or so.

Leak Detection

Another useful feature that the V65IN has is its leak detection system. If the unit senses a leak, it will automatically shut off its water supply. It’s a feature that you hopefully won’t need, but it could save you from the inevitable damage that leaks can cause.

Sale
Rinnai V65IN 6.6 GPM Indoor Low NOx Tankless Natural Gas Water Heater
  • Endless hot water for your entire home
  • V65iN HE High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
  • Up to 6.5 GPM hot water flow rate (varies by groundwater temp)
  • Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.
  • Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

Last update on 2019-08-17 at 09:00 / Affiliate links / Ratings / Images from Amazon Product Advertising API


3. Rinnai V75IN

Rinnai V75IN

Like the sound of the V65IN but not sure if it’ll be powerful enough? The third of my Rinnai reviews features an alternative tankless water heater that may be closer to what you’re looking for.

Overview

As you might guess based on the model name, the Rinnai V75IN is a higher hot water capacity version of its little brother, the V65IN. It has a 7.5 GPM flow as opposed to the V65IN’s 6.5. This makes it better suited for small to medium sized houses, or for small households, than the V65IN.

Additional GPM

Is there anything else that sets the V75IN apart from the less powerful version? For starters, it has identical dimensions and weight — 4 x 9 x 23 inches and 49.6 pounds. That means that you would get an extra gallon per minute of hot water without the unit taking up additional space.

App Integration & Leak Detection

Aside from its convenient size, the V75IN also inherits its junior model’s extra features. Just like the V65IN, the V75IN has app integration and leak detection technology.

Rinnai V75iN Tankless Hot Water Heater, Large, V75iN-Natural Gas/7.5 GPM
  • Endless hot water for your entire home
  • V75iN HE High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
  • Up to 7.5 GPM hot water flow rate (varies by groundwater temp)
  • Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.
  • Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

Last update on 2019-08-17 at 09:00 / Affiliate links / Ratings / Images from Amazon Product Advertising API


4. Rinnai V65EP

Rinnai V65EP

This fourth Rinnai review is also the first review of a propane water heater. If you plan to heat your water with propane, is the V65EP right for you?

Similar to Rinnai’s V65IN, the V65EP has a 6.5 GPM flow rate. It’s also a similar size — 9 x 14 x 23 inches and 47.4 pounds.

Overview

Unlike the other models I’ve reviewed so far, the V65EP is meant to be installed outdoors. This is great for people who might be pressed for space, especially if you need a heater for an apartment or house that doesn’t have a garage or basement.

App Integration

Similar to the previous two models I’ve reviewed, the V65EP is Wi-Fi ready — you can control it with an app, just like the V65IN and V75IN. This feature may be more useful for this model, since it has to be outside. Instead of going out to change your heater’s settings, you can simply do it sitting down!

Five-Fixture Connectivity

You can connect the V65EP to five different fixtures, whether they’re sinks, showers, or washing machines. It’s the perfect number for a smaller home, but the V65EP could struggle with larger homes that have more than two bathrooms.

Rinnai V65EP Tankless Water Heater, Large, V65eP-Propane/6.5 GPM
  • Endless hot water for your entire home
  • V65eP HE High Efficiency Tankless Hot Water Heater - Propane: Outdoor Installation Only
  • Up to 6.5 GPM hot water flow rate (varies by groundwater temp)
  • Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.
  • Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

Last update on 2019-08-17 at 09:00 / Affiliate links / Ratings / Images from Amazon Product Advertising API


5. Rinnai RL94EP

Rinnai RL94EP

Looking for a tankless propane water heater that can handle your entire house? If the V65EP doesn’t meet your expectations or needs, then this Rinnai review of the RL94EP may offer you a more suitable option.

Overview

Like Rinnai’s other tankless water heaters, the RL94EP is compact. It’s only 14 x 10 x 23 inches and 44 pounds. It has a 9.4 gallons per minute flow rate and support for 6 fixtures. These features make the RL94EP a potentially appealing choice for a medium-sized household.

Outdoor Setup

Like the V65EP, the RL94EP belongs outdoors. Thanks to its space-saving design, however, it won’t stick out much and get in the way of your landscaping.The RL94EP also works with Rinnai’s app, so it’s easy to reprogram from anywhere for maximum energy savings.

Hot Water Recirculation

What really sets the RL94EP apart from the previous models I’ve reviewed is its recirculation technology. While the other heaters are capable of delivering hot water in less than a minute, the RL94EP can do it in mere seconds. This is an optional feature that requires extra installation, but for most people, installing the recirculation system should be well worth the effort.

Rinnai RL94EP Tankless Water Heater, Large, RL94eP-Propane/9.4 GPM
  • Endless hot water for your entire home
  • RL94eP HE+ High Efficiency Tankless Hot Water Heater - Propane: Outdoor Installation Only
  • Up to 9.4 GPM hot water flow rate (varies by groundwater temp)
  • Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
  • Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

Last update on 2019-08-17 at 09:00 / Affiliate links / Ratings / Images from Amazon Product Advertising API


6. Rinnai V65IP

Rinnai V65IP

This next Rinnai review covers another propane-based tankless heater: the V65IP. Read on to see how this model could strike a good middle ground between the others I’ve reviewed so far.

Overview

Does the V65IP sounds familiar? It should — it’s the propane-based version of Rinnai’s V series tankless heaters. With a 6.5 GPM flow rate, it has a similar hot water output to the V65IN. It’s also the same size — 14 x 9 x 23 inches and 50 pounds.

Wi-Fi Ready

In addition to its size and flow rate, it also has Wi-Fi capability and app integration. Furthermore, it belongs indoors just like its fellow V series models.

Propane Power

So what advantage does the V65IP have over the other V models that I’ve reviewed? Propane is more efficient and burns cleaner than natural gas, which means that it’s better for the environment. On the other hand, propane is more expensive than natural gas.

If you’re having trouble deciding between Rinnai’s V series models, you should take stock of the type of gas you’d prefer using. For most homeowners, natural gas is the more readily available and convenient of the two energy sources. Nevertheless, propane will allow your heater to perform optimally. You can’t go wrong either way!

Rinnai V65IP 6.6 GPM Indoor Low NOx Tankless Propane Water Heater
  • Endless hot water for your entire home
  • V65iP HE High Efficiency Tankless Hot Water Heater - Propane: Indoor Installation Only
  • Up to 6.5 GPM hot water flow rate (varies by groundwater temp)
  • Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.
  • Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

Last update on 2019-08-17 at 09:00 / Affiliate links / Ratings / Images from Amazon Product Advertising API


7. Rinnai RU80EN

Rinnai RU80EN

While all of the tankless water heaters in my Rinnai reviews are highly energy efficient, they aren’t the most efficient units available. If you’re after energy, and therefore money savings, then the RU80EN might be more appealing than the units I’ve reviewed so far.

Overview

Rinnai’s water heaters are compact, and the RU80EN is no exception. It’s 18.5 x 11 x 26 and 70 pounds — bigger than some of the other models, but still not much bigger than a microwave oven.

High GPM

The RU80EN’s 8 GPM hot water capacity is plenty for a medium household. It might even be suitable for a larger household, depending on your local water source’s ambient temperature.

Condensing Technology

What makes the RU80EN stand apart from the others in my reviews is the fact that it’s a condensing boiler. Condensing water heaters operate a bit differently. Instead of venting extra heat, they’re able to add it where you want it — in your water.

Remote Controls

While the RU80EN doesn’t work with Rinnai’s app, you can control it remotely with a separate digital controller.

Indoor or Outdoor

Keep in mind that the RU80EN has two variants — an indoor version and an outdoor version. Indoor heaters are easier to access, while outdoor heaters take up less interior space. While the best form is a matter of preference, I personally like outdoor heaters better since they stay out of the way. Water heaters aren’t exactly meant to be displayed!

Rinnai RU80EN 8.0 GPM Outdoor Ultra-NOx Condensing Tankless Natural Gas...
  • Condensing Technology for Greater Efficiency and Significant Energy Savings
  • Up to 97-Percent Thermal Efficiency
  • Pre-set at 120-DegreeF
  • Natural Gas and Propane Models Available
  • Meets California and Texas NOx Emissions Standards

Last update on 2019-08-17 at 09:00 / Affiliate links / Ratings / Images from Amazon Product Advertising API


8. Rinnai RU180iP

Rinnai RU180iP

Sometimes, all you need is pure volume. Maybe you live in a large house, or own a big restaurant or other commercial space. If you need a lot of hot water and don’t want to wait for it, this Rinnai review might help you solve that problem!

Overview

The propane-powered RU180iP has the highest hot water capacity out of the devices in these Rinnai reviews. Its 10 GPM flow could work well for sizable families, frequent showerers, and dedicated dishwashers.

Wall Mounting

While it has the highest output of the models I’ve reviewed, the RU180iP is also the biggest. It’s 22 x 15 x 34 inches — bulkier than the others, but by no means huge. It also weighs 74 pounds, but that won’t matter much once it’s attached to your wall! You should install it indoors, so it’s best suited for a garage or basement.

Wi-Fi and Recirculation

The RU180iP combines the best features from all of the products I’ve reviewed. To start with, it’s Wi-Fi ready and compatible with the app. It’s also capable of recirculating hot water, which means that you won’t have to wait after turning the faucet.

Energy Star Qualified

If you’re eager to save power with a new tankless water heater, then you might be interested to know that the RU180iP is Energy Star qualified. That means that it’s highly efficient, both in terms of energy use and heat retention.

Dual Pipe Setup

To top everything off, the RU180iP has a dual pipe system. As with the RUC98IN, this setup allows you more flexibility in the way you configure your piping.

Rinnai RU180iP Tankless Water Heaters, RU180ip-Propane/10 GPM
  • Endless hot water for your entire home
  • RU180ip Sensei SE+ Super High Efficiency Tankless Hot Water Heater - Propane: Indoor Installation Only
  • Up to 10 GPM hot water flow rate (varies by groundwater temp)
  • Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
  • Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

Last update on 2019-08-17 at 09:00 / Affiliate links / Ratings / Images from Amazon Product Advertising API

The Best Rinnai Tankless Water Heater

Rinnai has an impressive lineup of tankless water heaters, but one clearly stands apart from the others. Based on safe judgement and research, the Rinnai RU180iP is the best tankless water heater out of all the models in my Rinnai reviews.

Not only does the RU180iP combine all the best features from the other heaters, it’s also the most energy efficient model on the list. The RU180iP will help you save money, and it’ll ensure that you’ll never be unsatisfied again by a lack of hot water!

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