Rinnai Water Heaters 

Rinnai RU98IP Review

Rinnai RU98IP Ultra-NOx Condensing Tankless Propane Water Heater

This model is one of the most efficient water heaters for those with a reduced space available at home. It’s also a new and budget-friendly model.

The main factor to ascertain is whether the model you are buying will meet your needs and demands. This device is an efficient propane consuming tankless super-NOx compressing water heater. It might satisfy your needs.


The main trait to look at in the Rinnai GPM is that it doesn’t have a tank. That’s to say, it doesn’t hold water to warm it up. On-demand is an awesome trait that reduces the risk of explosion.

It is an extremely efficient device with low power and gas needs for heating. That’s for sure a relief for your wallet. It is meant to be installed indoors and its installation is actually simple. It complies with NOx Emissions requirements for using in California and Texas. It even comes with a 12-year warranty on the heat exchanger and a 5-year parts warranty.

There are four versions of this heater to choose from depending on the dimensions of your house. For two or more bathrooms, it’s preferable to buy two or more units. The Rinnai RU98IP has the following features:

  • Weighs 80,5 Pounds
  • Dimensions are 18,5” by 10,1” by 26,4”
  • Max BTU: 199,000
  • Max Energy Factor: 0,94
  • For indoor installation only, not portable
  • Condensing Tech for optimum performance
  • 120°F preset and 180°F option
  • Compatible with all Rinnai Digital Controllers
  • No batteries required


We have some reasons to recommend you buy and install the Rinnai RU98IP 9.8 GPM Indoor Ultra-NOx Condensing Tankless Propane Water Heater.


An awesome feature in this model is the several heating choices it offers. You can select the heat option that better fits your family. It comes preset at 120°F but you have options to set it at lower or higher temps.


The water heater includes three types of warranties. A warranty on the heat exchanger for 15 years, a warranty for all the other parts for 5 years, and a one-year warranty on service for home installations. This is not the kind of warranty that comes with most other water heaters.


You can find lots of tankless heaters, but they’re usually meant for small houses and businesses. This is not the case of the Rinnai RU98IP. This model is ideal for medium to big houses. This becomes much more economical than buying two or more heaters for bigger houses.


You won’t have high gas bills to pay. This model works on propane gas. That makes it a more economical option and you will save money in the long term.


This is an advanced option for you, so hat you can adjust the temperature depending on your family’s requirements. You will need more heat for a larger family or, on the other hand, less heat when you have little children to reduce the risk of scalding.


We have heard some complaints about this model, and you should be aware of them.


The fact that it doesn’t have a tank doesn’t entail that it is a portable heater and you can take it anywhere. As it is a tankless heater, some people think they can take it out. This isn’t so, and it is for indoor use only.

If you want a heater to work outside, then consider buying a portable heater.


If you care about the price, you must keep in mind this is one of the most expensive water heater options. You will make a big inversion by purchasing this tankless model, much bigger than with some others. Anyway, the cost-benefit ratio will be high.


The Rinnai RU98IP 9.8 GPM Indoor Ultra-NOx Condensing Tankless Propane Water Heater is a great non-electric choice. This model comes with some awesome traits and profits. But you must also be aware of some details about this heater. That it isn’t that affordable or not at all portable are some of them. As a rule, you won’t have any issue when buying this apparat. Installing it is also a simple process. The main drawback is that it’s not very affordable and you will make a quantum inversion when buying it.

Rinnai RU98IP 9.8 GPM Indoor Ultra-NOx Condensing Tankless Propane Water Heater

By using this water heater, you will see the difference on your utility bills. This model is suitable and ideal for all house architectures. This is definitely a great pick for a tankless water heater.

Rinnai has made a deep impression on the tankless water heater market with its impressively broad spectrum of models. It keeps launching innovating and sophisticated tankless water heater designs every now and then, which places it among the most best-selling brands worldwide.

Rinnai RU98IP 9.8 GPM Indoor Ultra-NOx Condensing Tankless Propane Water Heater is one of the most sough-after models of the brand and outdoes other tankless models of similar characteristics by having such good traits and benefits.

What will you get from the Rinnai RU98IP?

RU98IP is a dynamic heater by Rinnai that includes some impressive features and functions. Now we will take a close look at this product’s specialties.

Consumption efficiency

One of the issues water heaters are related to is the high demand of energy they need for working. The main aspect on this specific propane model is that it doesn’t consume huge amounts of energy and does consume energy efficiently, unlike many other tankless models. The max energy factor of this model is 0,94. Certainly a good number for its range. It reaches a maximum of 199,000 BTU. It can heat water almost immediately so it doesn’t waste power. It can deliver 9,8 gallons of hot water per minute.

Small and convenient

This tankless water heater is totally user-friendly and doesn’t imply any complex process. It has a compact design and weighs barely 80Lbs with measurements of 18,5” by 10,1” by 26,4”. It has a classy and good-looking finish that will fit in any room effortlessly. It’s among the best indoor tankless heaters available and its installation happens to be quite simple too.

Advanced technology features

It incorporates Condensing Technology that takes the machine’s performance to the next level. Its thermal efficiency is about 96% which means an important energy saving in the long term. This heater complies with California and Texas NOx emission requirements.

What do users say about the Rinnai RU98IP?

This propane tankless water heater receives great feedbacks about its working and functions. It gets five stars when it comes to efficiency and performance. It can run amazingly for a really long time. Its installation is quite simple. It includes a 12-year warranty on all parts and a one-year warranty on service for home installations. It will consume energy efficiently so it will collaborate to lower your utility bills. It’s the best propane powered tankless water heater available.

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