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Rheem RETEX-04 Professional Classic® Tankless Electric Water Heater
The Rheem RETEX-04 Professional Classic® tankless electric water heater delivers on-demand hot water for single point-of-use applications while saving space and energy. This compact, lightweight unit features a durable copper immersion heating element with brass top for increased durability and easy replacement. The digital temperature display shows the outlet temperature, providing at-a-glance monitoring of your hot water. Designed for small applications like hand washing stations, wet bars, or small utility sinks, the RETEX-04 provides consistent performance in a sleek, space-saving design that installs easily with standard 1/2" NPT water connections.
Performance & Specifications
| Feature | Specification | Benefit |
|---|---|---|
| Power Rating | 3.5 kW, 120V, 29 Amps | ✓ Standard household voltage with robust heating capacity |
| Flow Rate | 0.3 GPM to 1.5 GPM | ✓ Ideal for single point-of-use applications |
| Temperature Rise | 48°F at 0.5 GPM, 24°F at 1.0 GPM | ✓ Provides practical heating for hand washing and light use |
How It Works: Advanced Heating Technology
Stage 1: Instant Activation
Function: Water flow sensor activates heating at just 0.3 GPM
Benefit: Immediate response with no standby energy loss
Stage 2: Precision Heating
Function: Copper immersion heating element with brass top provides efficient heat transfer
Benefit: Consistent water temperature for improved user experience
Stage 3: Real-Time Monitoring
Function: Digital display shows current outlet water temperature
Benefit: Easy temperature monitoring at a glance
Key Features
- ✓ Compact Design: Space-saving unit at just 5-7/8" x 10-7/8" x 2-3/4"
- ✓ Digital Display: Shows outlet water temperature for easy monitoring
- ✓ Durable Construction: Copper heating element with brass top increases longevity
- ✓ Easy Installation: Simple 1/2" NPT water connections with included adapters
- ✓ Lightweight: Just 4.5 lbs for easy mounting and handling
- ✓ Energy Efficient: Heats water only when needed, eliminating standby heat loss
- ✓ Safety Certified: ETL listed to UL 499 and CSA standards
- ✓ Lead-Free Certified: Tested and certified by the Water Quality Association against NSF/ANSI 372
- ✓ Field Serviceable: Element designed for easy replacement if needed
- ✓ Reliable Performance: Designed for years of consistent operation
Comparison to Traditional Tank Water Heaters
| Feature | Rheem RETEX-04 Tankless | Traditional Tank Water Heater |
|---|---|---|
| Energy Usage | Heats only when water flows | Constantly reheating stored water |
| Space Requirements | Compact, wall-mounted design | Large footprint requiring floor space |
| Installation Flexibility | Mount near point-of-use | Typically requires dedicated utility space |
| Hot Water Availability | Continuous supply at specified flow rate | Limited to tank capacity before recovery |
| Lifespan | Longer potential lifespan with replaceable components | Typically 8-12 years before replacement |
Ideal Applications
- ✓ Hand Washing Stations: Perfect for bathrooms with low to moderate use
- ✓ Wet Bars or Kitchenettes: Provides hot water for small sink applications
- ✓ Utility Sinks: Ideal for laundry rooms or work areas
- ✓ Small Offices: Supplies hot water for break room or bathroom sinks
- ✓ RVs or Tiny Homes: Space-saving solution for compact living
What's Included
- 1 × Rheem RETEX-04 Professional Classic® Tankless Electric Water Heater
- 1/2" NPT adapters for water connections
- Installation instructions and owner's manual
- Mounting hardware
Note: This product is covered by a 5-year limited warranty on the heating chamber and a 1-year limited warranty on parts. The water heater must be installed in accordance with local plumbing and electrical codes by a qualified professional.