Rheem Tankless Electric Water Heaters
The new degree of comfort.™
Tankless electric water heaters offer continuous hot water quick and on demand for point-of-use applications
Features
- Continuous hot water on demand
- Industry leading low-flow activation
- External temperature control
- LEDs indicate active element and standby mode
- 1/2-Inch water connections
- Rugged brass/copper heat exchanger
- Pre-wired 2-foot power supply cord(s) included
Efficiency
- Modulating heat exchanger improves energy efficiency
- No standby heat loss aids in energy consumption
- No venting needed - eliminates greenhouse gases
Easy Installation
- Complete install without removing the cover
- Easy water connections using 1/2-inch compression fittings
- Lightweight
Space Savings
- No T&P valve required
- Compact size - fits almost anywhere
Applications
- Homes
- Restaurants
- Apartments
- Offices
- Condos
- Laboratories
- Hospitals
- Anywhere hot water is needed
- Rest rooms
Warranty
10-Year limited heat exchanger and 1-Year limited parts warranty.*
*See Residential Warranty Certificate for complete information.
Model Specifics
RTE 3 and RTE 7
- Ideal for fast, continuous hot water at a single point-of-use faucet or other fixture.
- RTE 3 (3kW/120V) requires a dedicated 30 AMP breaker.
- RTE 7 (7kW/240V) requires a dedicated 30 AMP breaker.
RTE 9 and RTE 13
- Ideal for fast, continuous hot water at a lavatory or sink.
- RTE 9 (9kW/240V) requires a dedicated 40 AMP breaker.
- RTE 13 (13kW/240V) requires a dedicated 60 AMP breaker.
RTE 18 and RTE 27
- Designed for fast, continuous hot water in a bathroom addition/renovation or single shower.
- RTE 18 (18kW/240V) requires two dedicated 40 AMP breakers.
- RTE 27 (27kW/240V) requires two dedicated 60 AMP breakers.
All models come with an on-unit temperature control with LED lights.
Rheem Tankless Electric Specifications
Illustrations show various Rheem tankless electric water heater models (RTE 3, 7, 9, 13, 18, 27) and a typical under-sink installation diagram. These units are Rheem RTE Tankless models, offering 3 kW to 27 kW capacity, available in 120 and 240 Volt AC Electric. They are MET and US certified.
Flow Rate by Application
| APPLICATION | FLOW RATE IN GPM AT 60 PSI |
|---|---|
| Typical Shower | 2.0 GPM |
| Typical Bath Tub Faucet | 2.5 GPM |
| Bathroom Vanity Sink Faucet | 1.0 GPM |
| Kitchen Sink Faucet | 1.5 GPM |
| Washer | 2.0 GPM |
Water Temperature and Flow Rate Recommendations
Recommendations based on hot outlet water temperature of 105°F.
| GROUND WATER TEMPERATURE | REQUIRED FLOW RATE IN GALLONS PER MINUTE | SUGGESTED ECOSENSE MODEL (KW) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1.5 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | ||
| 35 | 13 | 18 | 27 | 27 | ||||||
| 40 | 9 | 13 | 18 | 27 | 27 | |||||
| 45 | 9 | 13 | 18 | 27 | 27 | 27 | ||||
| 50 | 9 | 13 | 18 | 27 | 27 | 27 | ||||
| 55 | 7 | 9 | 13 | 18 | 27 | 27 | 27 | 27 | ||
| 60 | 7 | 7 | 9 | 18 | 18 | 27 | 27 | 27 | ||
| 65 | 7 | 7 | 9 | 13 | 18 | 18 | 18 | 27 | ||
| 70 | 7 | 7 | 9 | 13 | 13 | 18 | 27 | 27 | 27 | |
| 75+ | 3 | 7 | 7 | 9 | 18 | 18 | 18 | 27 | 27 | |
Plumbing connections: 1/2 NPT. Minimum flow rate: 1/2 gal. min.
Dimensions (inches/pounds)
| MODEL | HEIGHT | WIDTH | DEPTH | WEIGHT |
|---|---|---|---|---|
| RTE 3 | 10-1/4 | 5-3/8 | 3-1/4 | 6 |
| RTE 7 | 10-1/4 | 5-3/8 | 3-1/4 | 6 |
| RTE 9 | 10 | 7-1/4 | 3-1/4 | 8 |
| RTE 13 | 10 | 7-1/4 | 3-1/4 | 8 |
| RTE 18 | 10-1/2 | 11-1/4 | 3-1/4 | 12 |
| RTE 27 | 10-1/2 | 11-1/4 | 3-1/4 | 12 |
Electrical Specifications
| MODEL | KW | VOLTS | RECOMMENDED BREAKER SIZE (AMP) | MAX POWER (AMP) | AWG WIRE |
|---|---|---|---|---|---|
| RTE 3 | 3 | 120 | 30 | 29 | 10 |
| RTE 7 | 7 | 240 | 30 | 29 | 10 |
| RTE 9 | 9 | 240 | 40 | 38 | 8 |
| RTE 13 | 13 | 240 | 60 | 54 | 6 |
| RTE 18 | 18 | 240 | (2) 40 | 75 | (2) 8 |
| RTE 27 | 27 | 240 | (2) 60 | 112 | (2) 6 |
