The Rinnai RL75iN Natural Gas Tankless Water Heater is 10,300 – 180,000 BTU, and provides 82% thermal efficiency. This tankless water heater uses natural gas to deliver as much as 7.5 gallons of hot water per minute, even in homes with up to three bathrooms.
This unit allows you to cut energy costs by switching to natural gas, which is a cheaper source than propane or electric.
The Rinnai RL75iN allows for remote temperature control between 98° to 140° F, and includes a default setting of 120° F.
This unit can also furnish hot water for up to three bathrooms at the same time, with a delivery rate of 7.5 gallons per minute, or four water demanding appliances, with virtually no temperature fluctuations.
Since this is an on demand hot water heater, there is a 30 to 60 second delay between turning the water on, and optimal hot water output. If you live in areas with higher water rates, this could result in a potential waste of up to 10 gallons per day depending on your water usage.
If you are using the heater with softened well water, you will need to plan on maintenance after around two years of use to avoid water cutting out, the flame going out, or heavily fluctuating temperatures. The maintenance will require you to disassemble the unit in order to reset the sensors.
The Rinnai RL75iN Natural Gas Tankless Water Heater provides an 82% energy efficiency, which results in a significant reduction in utility bills. This reduction generally pays for any extra costs associated with the heater within the first year of use, depending on how often you use hot water. The unit also comes with a digital controller that will provide alerts and codes if any errors are detected during use. The small size and venting system allow you to install the heater in nearly any room, as long as there is a way to vent it directly to the outside.
While there have been some complaints about these units experiencing issues at around the two year mark, most of these are from customers who are also using softened well water. These issues include inconveniences such as the flame going out, the water flow stopping, or heavy temperature fluctuations, all of which can be avoided if the proper maintenance schedule is followed. It is also important to remember that this is an on demand unit, which means the water is not heated until hot water is requested. This does result in a delay before the water makes it from the heater to the requested source.
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Overall, most people who purchase the Rinnai RL75iN Natural Gas Tankless Water Heater are happy with their purchase. The energy efficiency, and the ability to use natural gas provides significant savings in energy bills over time, which essentially offsets the initial costs of installing the unit. If you are looking for a tankless heater that is capable of handling up to three bathrooms, this unit is a great choice.