Why Might I Want this Specific Tankless Water Heater?
There’s no question about it. The tankless water heater market today is crowded with models in every shape, size, and capacity imaginable (not to mention some of the cheap knockoff models). As such, it’s becoming harder and harder for the average homeowner to succinctly find a tankless water heater to fit their average simultaneous hot water usage needs. Luckily, high-performing midrange models like the Rheem RTEX-18 are still readily available.
Even on its face, Rheem is one of the most trusted brands in the tankless water heater manufacturing business. Thousands of homes across the country make use of their many reliable water heating modules each and every day. Rheem can also claim a fair number of repeat customers, many of whom are repeatedly impressed at the brand’s ability to implement more durable and efficient components into each new model without hiking prices.
The Rheem Rtex-18 fits into this tradition well. For example, with a 4.4 GPM on average, this model is more than capable of efficiently delivering an ample volume of hot water across two to three in-home outlets at once. Moreover, this model’s self-modulating power control makes it easy to use the least amount of electricity while still attaining an optimally satisfying (and safe) water temperature.
Key Specifications and Features to Look for in a Tankless Water Heater
Dimensions & Capacity
Understanding a prospective unit’s dimensions is essential to the installation process, which may be complicated if you don’t leave enough space for all necessary connection lines. While you may expect the Rheem RTEX-18 to have a low capacity as a result of its compact size, but it can actually output quite a few gallons per minute without needing to store any water internally.
Standard tankless water heaters today are powered by either electricity, natural gas, or propane. While each fuel source has its own advantages, the Rheem Rtex-18 runs on electricity (which is considered to be the most popular due to its simplified installation process).
Flow Rate & Water Pressure
Flow rate (measured in gallons per minute or GPM) describes how much water can pass through a given unit in a minute’s time. This metric also affects water pressure, which is necessary for a sanitary and efficient water distribution system. The Rheem RTEX-18 clocks in at a respectable 4.4 GPM, which is actually higher than average for units in its size class.
Heating capacity describes the top temperature to which a unit’s heating components can warm direct ground water. The Rheem RTEX-18 can heat water to temperatures between 80 °F and 140 °F, a range typically only seen in larger or more expensive units.
Energy Efficiency Ratings & Certifications
Some high-performing tankless water heaters today receive an energy efficiency rating or regulatory certifications to further solidify their ability to save users money on their future utility bills. The Rheem RTEX-18 carries a remarkable 99% energy efficiency rating, indicating that only 1% of its overall energy usage is not applied directly to water heating.
Price and Warranty
Of course, price comparisons are always necessary when deciding between a set of similarly capable units. Add-on value, such as the Rheem RTEX-18’s 5-year warranty, should be taken into account when considering the long term investment value of picking a certain unit over another.
The most user-friendly tankless water heaters available today come with modern digital displays to make it easy to modify the operational temperature with precision. The Rheem RTEX-18 can be counted among this modern group, while some of its competitors still use antiquated analog interfaces.
Those looking to pick up a tankless water heater for the long-term should certainly opt for a model with proven durability. This includes the use of corrosion-resistant internal components, such as those used in the Rheem RTEX-18.
Different Uses for a Tankless Water Heater
Decentralized In-Home Water Heating
Tankless water heaters see a lot of use among homeowners who are looking to move on from their bulky tank water heater and decentralize their water heating system, in turn. Units like the Rheem RTEX-18 make this easy due to their modular nature, which allows them to be installed in a heavy use location such as a kitchen or bathroom. This keeps the desired output point and production point close together, providing more convenience and temperature consistency overall.
Cutting Water and Electric Bills
Tankless water heaters like the Rheem RTEX-18 are also prized by their owners for the manner in which they immediately save homeowners on their utility bills. This is primarily the lack of tank on a tankless water heater. Without, the unit doesn’t store water that isn’t being used, nor is it heating said stored water. As a result, your future electricity and water bills will feel more commensurate with your realistic usage.