Rheem RTEX-08 Professional Classic Electric Tankless Water Heater
Rheem RTEX-08 Professional Classic Electric Tankless Water Heater
RTEX-08, RTEX-11, and RTEX-13 are designed for one or two applications and are installed at the point-of-use. The durable, compact design allows installation in tight spaces. Perfect for a low flow faucet or bathroom faucet. In warmer climates, these models can accommodate a shower. To select a unit that meets electrical and hot water gallons per minute (GPM) requirements, please use the sizing guide.
Applications:
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Standard Hand Sink – 0.5 GPM
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Kitchen Sink – 1 to 2 GPM
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Dishwasher – 1 to 2 GPM
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Washing Machine – 1 to 1.5 GPM
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Water-Saver Shower Head – 1.5 GPM
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Standard Shower Head – 2.0 GPM
Features:
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Saves Space – Up to 93% smaller than a standard electric water heater.
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Saves Energy – Zero standby heat loss when installed near the point-of-use.
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More Hot Water – Up to 4 times the hot water delivery of a standard electric tank (per hour).
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High Efficiency – UEF up to .96 and advanced self-modulating technology only consumes the power needed to satisfy hot water demand.
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Copper immersion heating elements improve the thermal performance providing better temperature control and faster recovery of hot water.
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Stainless steel heat exchanger transfers heat fast and resists corrosion.
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Durable powder-coated shell with an engineered polymer backplate.
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Brass ½" CF located on the side for the inlet and outlet water connections provide strength and durability.
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Designed to be mounted in an upright position with the inlet and outlet water connections on the side of the unit.
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Venting is not required to operate, simplifying the installation process compared to a gas tankless water heater.
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Digital thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C).
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Tested and certified by the Water Quality Association against NSF/ANSI 372 for lead-free compliance.
Specifications:
| Model | Professional Classic Series: RTEX-08 |
| Power | 8 kW |
| Voltage | 240V |
| UEF | 0.96 |
| Amperage | 33 A |
| Recommended Breaker Size | 1 x 40 A Double Pole |
| Household Electrical Service Panel Recommended | 100 Amps |
| Recommended Wire Size | 8 AWG (75°C Insulation) |
| Phase | 1 |
| Water Connections | 1/2" CF |
| Flow Activation Rate | 0.3 GPM |
| Operating Pressure | Minimum: 25 PSI, Maximum: 150 PSI |
| Heat Exchanger | Stainless Steel |
| Element | 1 |
| Dimensions | 11.4" H x 7.9" W x 3.7" D |
| Warranty | 5 Years - Leaks, 1 Year - Parts |
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SKU
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Weight
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MPN
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Manufacturer
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Category
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ApplicationResidential
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Tankless Type
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Energy Source
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Voltage
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UPC
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GTIN
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Power
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Required Breaker
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Water Connection
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Wire Size
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AWG Wire
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Amperage
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Turn On(GPM)
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Flow Range
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Max Flow Rate GPM
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