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Professional Classic Series Tankless Electric RTEX-18 kW
MODEL RTEX-18
Heating Chamber - 5 Years
Parts - 1 Year
- UEF up to .94
- Flow rate up to 4.4 GPM
- Durable powder-coated shell with a galvanized steel backplate.
- Digital thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)
Select GPM
7
GPM
Models
SKU RTEX-18
Model Professional Classic Tankless Electric RTEX-18
Fuel Electric
High Efficiency Yes
Professional Classic® tankless electric water heaters offer continuous hot water quick and on demand for single point-of-use or multiple applications
Performance Features
- Saves Space – up to 93% smaller than a standard electric water heater
- Saves Energy – zero standby heat loss when installed near the point-of-use
- More Hot Water – up to 4 times the hot water delivery of a standard electric tank (per hour)
- consumes the power needed to satisfy hot water demand
- Copper immersion heating elements fit into a multi-chamber design to improve the thermal performance providing better temperature control and faster recovery of hot water
- 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
- Warranty 5 Years - Leaks, 1 Year – Parts
Applications
- Standard Hand Sink – 0.5 GPM
- Washing Machine – 1 to 1.5 GPM
- Kitchen Sink – 1 to 2 GPM
- Dishwasher – 1 to 2 GPM
- Water-Saver Shower Head – 1.5 GPM
- Standard Shower Head – 2.0 GPM
- Bath Tub – = 4 GPM
Average Gallons Per Minute (GPM) based on 2010 Plumbing Standards
| MODEL NUMBER | MAX FLOW (GPM) |
| RTEX-18 | 4.4 |
Heating Chamber - 5 Years
Parts - 1 Year
More Residential Rheem Products
Find additional documentation by viewing these related products.
Electric
Professional Classic Series Tankless Electric RTEX-3.5, RTEX-06 kW- UEF up to 0.95
- Flow Rate up to 1.6 GPM (See specification sheet for the GPM on each model)
- Digital temperature control in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)
- Two 0.35 GPM aerators are included for optimal temperature output and performance
Electric
Professional Classic Series: RTEX-04T, RTEX-06T- Efficient Design – UEF up to .95 and advanced self-modulating technology only consumes the power needed to satisfy hot water demand
- Flow Rate up to 0.25 GPM
- Digital thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)
- Includes two optional 0.35 GPM aerators (flow restrictors) for optimal temperature output and performance
- Stainless steel heat exchanger reduces corrosion for long life.
- Brass 1/2" NPT fittings located on the bottom for the inlet and outlet water connections.
Electric
Professional Classic Series: RTEX-04T, RTEX-06T- Efficient Design – UEF up to .95 and advanced self-modulating technology only consumes the power needed to satisfy hot water demand
- Flow Rate up to 0.25 GPM
- Digital thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)
- Includes two optional 0.35 GPM aerators (flow restrictors) for optimal temperature output and performance
- Stainless steel heat exchanger reduces corrosion for long life.
- Brass 1/2" NPT fittings located on the bottom for the inlet and outlet water connections.
Electric
Professional Classic Series Tankless Electric RTEX-04T kW, RTEX-06T kW- Efficient Design – UEF up to .95 and advanced self-modulating technology only consumes the power needed to satisfy hot water demand
- Flow Rate up to 0.25 GPM
- Digital thermostatic temperature controls in 1-degree increments ranging from80°F - 140°F (26°C - 60°C)
- Includes two optional 0.35 GPM aerators (flow restrictors) for optimal temperature output and performance
- Stainless steel heat exchanger reduces corrosion for long life
- Brass 1/2" NPT fittings located on the bottom for the inlet and outlet water connections
