Rheem RTE 9 Electric Tankless Water Heater, 3 GPM | Review

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Rheem happens to be one of the topnotch brands that manufacture some of the best functioning tankless water heaters. The brand has earned a name on a global level for its advanced and interesting features. The reason tankless water heaters have become popular is that they are known to be user-friendly and highly efficient when compared to the old water heater models that comes with tank.

Rheem RTE 9 Electric Tankless Water Heater, 3 GPM is one such popular model of tankless water heaters from Rheem that has created a buzz with its impeccable features. The product was first launched in the market on May 19, 2010.

Main Features of Rheem RTE 9 Electric Tankless Water Heater, 3 GPM

  1. Efficient performance

Rheem RTE 9 Electric Tankless Water Heater is an efficient tankless water heater model that is known to use less electricity to supply hot water to the entire household. The model has earned Energy Star certification as it is known to bring down energy consumption with regard to water heaters to a considerable extent. It supplies continuous, on demand hot water.

The new-age water heater is perfect for point of use applications and comes with advanced features that maximize its efficiency. The maximum rate of flow of the water heater model is 3 Gallons per minute (GPM).

  1. Compact design

Rheem RTE 9 Electric Tankless Water Heater has an attractive and compact design. It weighs 7.8 pounds and comes in the product dimensions of 9 x 7.4 x 10 inches. The 9 volts water heater can be easily fitted into any space and is known to work well in all conditions.

Though, the tankless water heater can be easily fitted, it is best to use professional help if you are planning to use warranty offered by the company. It provides 1 year warranty on parts and 10 years heat exchange warranty.

  1. User-friendly features

Rheem RTE 9 Electric Tankless Water Heater comes with an on-unit temperature control. The LED points out the active aspect of the heater and let know the users about the standby mode. It also has a standard water connection of 1/2 inches. The brass heat exchanger of the tankless water heater ensures to heat the water in a consistent manner. The modulating power keeps the heater working in the best condition.


The Rheem RTE 9 Electric Tankless Water Heater model comes with few disadvantages as well. The water heater is known to decrease the water temperature at times when the flow rate is high. The water heater needs to be installed with the help of professional technician in order to avoid any sort of issues or problems with regard to its functions.

Customer Review

Rheem RTE 9 Electric Tankless Water Heater is known to have fair positive reviews online. The product seems to have some issues with providing hot water consistently. However, not all the models are having this issue and are able to produce hot water for the entire household on a regular basis. The model is compact, easy to use and offers limited electricity consumption for its functionality. On the whole, Rheem comes across as a good electricity-based tankless water heater.

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