Rinnai RL94eN Outdoor Tankless Water Heater Review

Product Name:RL94eN Outdoor Natural Gas Tankless Water Heater
Power Source:Natural Gas
Use Type:Outdoor
Capacity:9.4 GPM
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The Quick Review

One of the most popular, reliable and powerful outdoor natural gas tankless water heaters in the market, the Rinnai RL94eN is the safest bet for those needing outdoor water heating. With a massive 9.4 GPM flow rate, this is one of the most powerful units you will find in the outdoor natural gas category. With an industry leading warranty, backed by one of the most trusted names in water heaters, you cannot go wrong with the Rinnai RL94eN.


With an industry leading 9.4 GPM flow rate, you will be able to heat up to 3 outputs at once. For example, you could heat two showers and a diswasher at the same time, or a washing machine, a dishwasher, a shower and a kitchen sink. That is basically all the hot water the average home would need.


Since this tankless water heater requires a gas line hook up, you will require professional installation. We do not recommend an amateur attempt to install this unit as working with gas lines can be very dangerous. That said, for a professional, this installation is quite straight forward and shouldn’t run up a large labor bill. Many individuals on Amazon has reported that they were able to install it themselves with ease.


If you are looking for long-term value with a trusted name and immediate energy savings by going tankless, the value in the Rinnai RL94eN is clear. While more expensive then some other units, you have to factor in the peace of mind of going with such a trusted name.

Over the long run, the extreme efficiency of this unit using natural gas will be much less expensive than electric hot water tanks.

The Misses

Most tankless water heaters take a while for the water to heat up when you turn on the faucets, and this unit is no exception. It can take up to 15 seconds (in the winter) for the water to heat up, which is slower than conventional electric water tanks. For a unit of this quality, we would expect them to innovate in this area.

There have also been some customers who have reported receiving a faulty unit and having to wait weeks for the warranty process to complete and the new unit shipped out. Fortunately, this was a very small percentage of overall reviews on the product. The majority of purchasers give this product 5 stars or more on Amazon.

Our Recommendation

We definitely recommend this product for any house with up to 3 bathrooms and large appliances. Be sure to check the price to see if a discount is available today.

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