Rinnai RL94eN Natural Gas Tankless Water Heater, 9.4 Gallons Per Minute

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Rinnai RL94eN Natural Gas Tankless water heater is an external water heater that is capable of producing up to 9.4 gallons per minutes. This is ideal for large sized families and commercial applications.

This particular model is energy star certified and best suited for family homes. It is designed for wall mounting and capable of supplying water to as many as five plumbing units and appliances at the same time with out temperature fluctuation.

Prime features

There are lot of features and benefits that makes this model outstanding.

Digital controller: Rinnai RL94eN tankless water heater comes equip with a Mc-91-1Us digital controller with error code indicator. This helps you detect when something is wrong with the unit and the exact location of the problem. You can easily salvage the situation before an extensive damage occurs.

High gas input     

It has a gas input range of 9,900 -199,000 BTU and a thermal efficiency of 85 %. You are sure of reliable hot water supply any time of the day.

Energy saving           

Its energy saving efficiency is simply amazing. You are able to save up to 40% on cost of energy with this particular model. This added up over time will eventually cover the cost of purchasing the unit, in addition to making extra saving.

Constant and steady hot water temperature

For those seeking a unit that is capable of supplying hot water at a steady temperature without fluctuation and to several out lets simultaneously, Rinnai RL94eN natural gas tankless water heater is a perfect fit. It has the ability to supply hot water at a steady temperature either for a 5 minutes shower or for 5 hours long. The temperature remains the same even with five plumbing appliances on.

Easy temperature adjustment

The digital controller display makes it possible for user to adjust the temperature to desired preference with out hassles.

Space saving

This is another huge plus for this particular model. Since it is for outside installation, you can still enjoy an endless stream of hot water even if your house is, a not designed well. Space is not a limiting factor with this model.


A 12-year warranty on the heat exchanger, 5 years on parts and 1-year labour warranty for residential application installation guarantees its durability.

Other features include:

An isolation valve

Qualified federal tax credit

Low Nox emission

The cons

The need to drain the water tank in order to keep the calibration functioning is a huge drawback for the unit but will extend the life to a longer period.

Another snag is that the heater attachment screws are also a bit smaller and does not inspire confidence on its capability to hold the heater firmly to the wall. For users who worry over such, a large expansion or toggle screw can be use to securely keep the unit mounted on the wall.

Review summary

Having gone through various reviews on Rinnai RL94eN natural gas tankless water heater, the percentage of positive rating far outweighs the negative. Most of the users are quite happy with the model.

The most outstanding quality is its ability to keep on supplying hot water at a steady temperature, irrespective of the number of appliances that are running at that time.

Rinnai RL94eN is highly recommended for large sized homeowners, who are looking for whole house tankless heater that is great on efficiency and energy saving.

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