Rinnai R63LSE Tankless Water Heater Review

Rinnai R63LSE Tankless Water Heater Review The name Rinnai may sound familiar to you; they are one of the largest Tankless Water Heater manufacturers in the United States. The company started in 1920 and has been rising above the competition with innovative designs and the most current technology.  More homeowners are turning to tankless water heaters for their home because they are great space savers and they can save you money as well. One of the best features of the Rinnai Tankless Water Heaters is the fact they are all Energy Star Certified.


This certification means that the tankless water heaters all have an energy factor rating of .82. It also means that these water heaters have a minimum of 2.5 gallons per minute at 77 degrees Fahrenheit rising and a minimum warranty of 10 years on the heat exchangers and a 5-year warranty on all of the parts. Any appliance or product that you see the Energy Star Logo on it means that you will save money on your energy bills and in the case of Tankless Water Heaters; it means that you will save money as well.

Rinnai has a full line of tankless water heaters and one of their premier selling items is the R63LSe. This tankless water can save you anywhere up to 40% on your energy bills costs a year. Think about your water bills and your electric bills now and see how much you can save. Let’s take a look at the R63LSe Tankless Water Heater and see what features and specifications are.

Rinnai R63LSe Tankless Water Heater Features

The Rinnai R63LSe offers a new and improved sleek design, gone are the big and bulky water heaters. This compact water heater can be wall mounted and fit in any closet or basement and you won’t have to sacrifice any space. This water heater offers water on demand. There is no water storage so you can save money on your water and electric bills. This water heater uses less CO2 and NOx making it a “ green” water heater. Not only can you save money but also you can contribute to the environment.

This is made possible by the way this system works. Rinnai Tankless Water Heaters can be used with either Natural Gas or Propane each has the same .82 Energy Factor. When the water flow is sensed the unit starts heating up the water as it passes through the heat exchanger. The system saves about 80% and more of the heat energy and this makes this water heater more efficient.

The R63LSe can be used for homes with 2 or more bathrooms. If you are tired of waiting for the hot water to come back on after someone else already takes a shower then tankless water heaters are the way to go. This unit meets and exceeds the California and Texas NOx emission standards.  This unit also comes with a MC-91-1 digital controller with an error code indicator so you can see when a problem may be rising.

Rinnai R63LSE Tankless Water Heater

Rinnai R63LSe Tankless Water Heater Specifications

The R63LSe can provide up to 6.3 gallons of fresh hot water on a constant demand. With this concept you can use three different water appliances at once. For example, you can run the dishwasher, washing machine and take a shower and not lose one ounce of hot water. The minimum Gas Rate or Input BTU’s is 19,000 and the maximum is 150,000 in Natural Gas. The hot water capacity of the Rinnai R63LSe is 0.6 to 6.3 gallons per minute with a 35 degree Fahrenheit rise. As we mentioned earlier, this tankless water heater is rated at .82 Energy Factor.

To install, the water heater has cold water inlet of ¾” MNPT and a hot water outlet of ¾” MNPT. Since this water heater can be used on both residential as well as commercial applications, the residential temperature range should be between 98 degrees Fahrenheit and 140 degrees Fahrenheit. For commercial applications, the temperature should range from 98 degrees Fahrenheit to 160 degrees Fahrenheit.

This water heater has an appliance electrical supply of AC 120 Volts and 60 Hz. When the water heater is in normal mode the wattage is 36, when the water heater is in stand by the wattage is 2 and in anti frost protection the wattage is 74. These wattages are not much more than a light bulb. This water heater is a forced combustion system and has a direct electronic ignition.

Rinnai has a full line of tankless water heaters, if the R63LSe is not what you are looking for then there are plenty of other water heaters that can do a great job like the R63LSe. You should always compare brands and prices of other tankless water heaters on the market. You want to make an informed decision on buying a water heater because you want it to last a long time. Since the Tankless Water Heaters do not store water there is less likely a risk of corrosion or rust to form.

Rinnai Tankless Water Heaters are affordable and come with a 12-year warranty on the copper heat exchanger for residential installations only and 5 years on parts and one year on labor. If you are in the market for a new water heater, consider tankless. You really can save yourself money on the water and electric bills throughout the year.

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