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

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

Luxury Collection Natural Gas, External Whole House Tankless Water Heater with 9.4 GPM at 30° F Rise for Five Plumbing and Appliance Outlets With a capacity up to 9.4 gallons per minute (GPM) of hot water, the RL94e is capable of supplying continuous hot water to as many as five plumbing and appliance outlets simultaneously, ensuring you never run out of hot water. You'll appreciate greater energy efficiency, lower energy costs and the simplicity of exterior installation. Qualifies For Federal Tax Credit A tankless water heater is an energy-efficient water heating system that heats water only when it’s needed. These space-saving, long-lasting water heaters provide an endless stream of clean, hot water for all your appliances simultaneously without temperature fluctuations. And all while saving you up to 40% in energy costs! Features: ENERGY STAR® Qualified Certified for Installation in Manufactured (Mobile) Homes Commercial-grade Heat Exchanger for Residential and Commercial Applic...

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

• 9,900 ? 199,000 BTU
• Comes standard with MC-91-1US Digital Controller with Error Code Indicator
• 83% Thermal Efficiency
• Residential Temperature Settings: 98°F - 140°F
• Commercial Temperature Settings: 98°F - 185°F (commercial controller must be purchased separately)

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

Customers say's :
Pretty good, but has an irritating design flaw.
When it works, it's pretty good. Doesn't have quite the same "push" as a tank water heater, as there isn't a 300-pound column of water being pulled towards the outlet in the tank by gravity. However, as advertised, it will keep water flowing at a constant temperature. You can take a shower for 5 minutes or 5 hours, and the temperature will never change!

Now, the design flaw. I had to screw around with this thing for about an hour at 3AM to figure out that if it loses power, you have to drain the water tank. If you don't do this, the calibration it tries to run when it's powered on will fail. Fortunately, there is a reasonably quick solution.

The following was adapted from page 15 of the manual: [...] - Use it at your own risk. If your heater doesn't work, maybe just call a plumber. (Hand them a printout of this if they get stumped.)

Here's the steps:
- Disconnect power
- Make sure NOT to stand in front of the MAINTENANCE valves (they open to...

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Works Great without "design flaws"
The lower capacity 7.5 would have been adequate for my two bedroom house, but my plumber recommended the 9.4 because the "isolator valves" are included with the 9.4, but not the 7.5. If you get the 7.5 you'll have to pay about $100 for these valves. A no-brainer, why not get the 9.4 for about the same price as the 7.5 and you get the larger flow capacity as a bonus. I wondered why I saw no mention of this in the numerous product descriptions on the internet. I was therefore pleased to find the valves included in the box. Essentially, you're getting the higher capacity heater for about the same price as the 7.5 model!

I'm not experiencing any of the "design flaws" described in previous reviews. I have had to turn off the gas frequently during my remodel. No problem with the heater working perfectly after gas is turned on, with no adjustments or procedure necessary.

As far as adjusting the temperature, this is easily done with an included touch pad with digital...

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worked well through the recent arctic blast

This heats really efficiently and quickly. The plumbers we have talked to also say it is a great product. Only problem is that when we changed from a tank to tank-less it revealed flaws in our plumbing. That cost another couple hundred to fix, but we still aren't sure why the flaws were more pronounced with the tank-less when the water is hotter and the heated water comes to the faucet faster...either way, I only mention for reference.

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