Performance Series Tankless Electric RETEX-8, RETEX-11, RETEX-13 kW
MODEL RETEX-13 (derated 208V performance)*
Heating Chamber - 5 Years
Parts - 1 Year
- UEF up to .96
- 8 kW model flow rate up to 2.0 GPM
- 11 kW model flow rate up to 2.7 GPM
- 13 kW model flow rate up to 3.2 GPM
- Digital thermostatic temperature controls ranging from 80°F - 140°F
- Copper heat exchanger
- Side ½” CF water connections
- Warranty 5 Years - Leaks, 1 Year – Parts
Select GPM
5
GPM
Models
SKU RETEX-13 (derated 208V performance)*
Warranty Years 5
Model Performance Series Tankless Electric RETEX-8, RETEX-11, RETEX-13 kW
GPM 5
Depth 3.63"
Height 12.63"
Width 8.25"
Single Shower Minutes 9999
Number Back To Back Showers 9999
Install Location Indoor
High Efficiency Yes
Kilowatts 10
Water Connector Size 32 32
Amps 49
Recommended Breaker Size 1x60
Voltage 208
RecommendedWireSize 6
Maximum Flow GPM 5
Adjustable Thermostat False
Performance tankless electric water heaters offer continuous hot water quick and on demand for single point-of-use or multiple applications
Performance Features- On demand, consistent and endless hot water
- Compact and stylish with digital temperature control in increments of 1°F ranging from 80°F to 140°F*
- 99.8% Energy efficient
- Robust copper immersion heating elements with brass top increases durability and are threaded for easy replacement
- Simple Installation
- Digital temperature display
- External controls to adjust temperature in increments of 1°F*
- Whole-Home – up to 6 GPM
- Water-Saver Shower Head – 1.5 GPM
- Standard Shower Head – 2.0 GPM
- Standard Hand Sink – 0.5 GPM
- Kitchen Sink – 1 to 2 GPM
- Bath Tub – = 4 GPM
- Dishwasher – 1 to 2 GPM
- Washing Machine – 1 to 1.5 GPM
Heating Chamber - 5 Years
Parts - 1 Year
More Residential Rheem Products
Find additional documentation by viewing these related products.
Performance Series Tankless Electric RETEX - 04T, 06T kW
- Saves Space – Up to 98% smaller than a standard electric water heater
- Saves Energy – Zero standby heat loss when installed at the point-of-use
- Efficient Design – UEF up to .95 and advanced self-modulating technology only consumes the power needed to satisfy hot water demand
- Durable copper sheathed heating elements are replaceable, easy to maintain and improves service life
- Digital thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)
- Designed to be mounted in an upright position with the inlet and outlet water connections at the bottom of the unit for ease of installation
- Venting is not required to operate, simplifying the installation process compared to a gas tankless water heater
- Includes two optional 0.35 GPM aerators (flow restrictors) for optimal temperature output and performance
Performance Series Tankless Electric RETEX - 04T, 06T kW
- Saves Space – Up to 98% smaller than a standard electric water heater
- Saves Energy – Zero standby heat loss when installed at the point-of-use
- Efficient Design – UEF up to .95 and advanced self-modulating technology only consumes the power needed to satisfy hot water demand
- Durable copper sheathed heating elements are replaceable, easy to maintain and improves service life
- Digital thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)
- Designed to be mounted in an upright position with the inlet and outlet water connections at the bottom of the unit for ease of installation
- Venting is not required to operate, simplifying the installation process compared to a gas tankless water heater
- Includes two optional 0.35 GPM aerators (flow restrictors) for optimal temperature output and performance
Professional Classic Series Tankless Electric RTEX-13 kW
2.3-2.3 GPM
- UEF up to .96
- Flow rate 1.3 - 2.3 GPM
- Durable, lightweight engineered polymer shell does not rust or corrode.
- Digital thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)


