Specification
Your location’s average ground water temperature and nozzle settings will affect the performance of Hotwave.
Follow these 2 steps to confirm Hotwave meets your needs.
PERFORMANCE GUIDE
GROUND FAULT
CIRCUIT
INTERRUPTER
(GFCI)
NOZZLE WITH
COLOR-CODED SETTINGS
4 ADJUSTABLE SPRAY PATTERNS:
Flat, Jet, Center, Shower
ON/OFF TRIGGER
WITH LOCKING
MECHANISM
120V. 15-AMP
ELECTRICAL
CONNECTION
INSULATED
ERGONOMIC
GRIP FOR
EXTRA
COMFORT
ADJUSTABLE WATER PRESSURE
LEVER CONTROLS WATER FLOW
6’ WATER HOSE & 5/8”
GARDEN HOSE OR
WATER CONNECTION
INCLUDES A POWER CORD
AND IS COMPATIBLE WITH
A STANDARD GARDEN HOSE
Use the U.S. Ground Water
Temperature Map to locate
your zone.
1
Zone 4
42°F
91°F
Zone 3
52°F
101°F
Zone 2
60°F
109°F
Zone 1
72°F
115°F
Average Ground
Water Temperature
Maximum Outlet
Temperature
2
On the Performance Table,
locate the corresponding
zone row from Step 1.
This row highlights the aver-
age outlet water temperature
and flow rate (water pressure)
by nozzle setting.
Rheem.com
HotWave _05 2023
CONSIDER YOUR LOCATION AND
SEASONAL CHANGES
Note the color of your location on the
map to the right. It corresponds to the
temperature of water entering your water
heater (inlet temp), in the chart below.
CONFIRM THIS MEETS YOUR NEEDS
Use the color of your location to find the
gallons per minute (GPM) and
corresponding Approx. Usage in the
chart below.
SELECTION GUIDE
Note: The number of faucets and/or showers this model will serve based on a temperature setting of 105°F.
Inlet Temp. 37-47˚F
Inlet Temp. 47-57˚F
Inlet Temp. 57-62˚F
Inlet Temp. 62-77˚F
Model Max GPM
Approx. Usage Max GPM
Approx. Usage Max GPM Approx. Usage Max GPM Approx. Usage
RETEX-04
Not Recommended
Not Recommended
0.6 0.9
RETEX-06
0.7 0.9 1.0 1.5
RETEX-08
0.94 1.14 1.27 1.95
RETEX-11
1.30 1.57 1.75 2.68
RETEX-13
1.53 1.85 2.06 3.17
RETEX-18
2.1 2.6 2.9 4.4
RETEX-24
2.8 3.4 3.8 5.9
RETEX-27
3.2 3.8 4.3 6.6
RETEX-36
4.2 5.1 5.7 8.8
Usage Key
Faucet:
Flow rate of 0.5 GPM
Shower:
Flow rate of 1.5 GPM
NOTE: The number of faucets and/or showers this model will serve based on a temperature setting of 105˚F
Higher temperature settings will reduce flow rates.
CONSIDER YOUR LOCATION AND
SEASONAL CHANGES
Note the color of your location on the
map to the right. It corresponds to the
temperature of water entering your water
heater (inlet temp), in the chart below.
CONFIRM THIS MEETS YOUR NEEDS
Use the color of your location to find the
gallons per minute (GPM) and
corresponding Approx. Usage in the
chart below.
SELECTION GUIDE
Note: The number of faucets and/or showers this model will serve based on a temperature setting of 105°F.
Inlet Temp. 37-47˚F
Inlet Temp. 47-57˚F
Inlet Temp. 57-62˚F
Inlet Temp. 62-77˚F
Model Max GPM
Approx. Usage Max GPM
Approx. Usage Max GPM Approx. Usage Max GPM Approx. Usage
RETEX-04
Not Recommended
Not Recommended
0.6 0.9
RETEX-06
0.7 0.9 1.0 1.5
RETEX-08
0.94 1.14 1.27 1.95
RETEX-11
1.30 1.57 1.75 2.68
RETEX-13
1.53 1.85 2.06 3.17
RETEX-18
2.1 2.6 2.9 4.4
RETEX-24
2.8 3.4 3.8 5.9
RETEX-27
3.2 3.8 4.3 6.6
RETEX-36
4.2 5.1 5.7 8.8
Usage Key
Faucet:
Flow rate of 0.5 GPM
Shower:
Flow rate of 1.5 GPM
NOTE: The number of faucets and/or showers this model will serve based on a temperature setting of 105˚F
Higher temperature settings will reduce flow rates.
Zone 2
Zone 1
Zone 3
Zone 4
U.S. GROUND WATER TEMPERATURE MAP
Nozzle Settings
Flat, Jet, Shower Flow Rate
Range
Center, Flat, Jet Flow Rate
Range
Flat, Jet Flow Rate
Range
Average
Inlet
Ground
Water
Temp.
Average Outlet Temp GPM* Average Outlet Temp GPM* Average Outlet Temp GPM*
Zone 1 72°F 84°F 0.3 - 1 102°F 0.25 - 0.4 115°F 0.2 - 0.25
Zone 2 60°F 72°F 0.3 - 1 90°F 0.25 - 0.4 109°F 0.2 - 0.25
Zone 3 52°F 64°F 0.3 - 1 82°F 0.25 - 0.4 101°F 0.2 - 0.25
Zone 4 42°F 54°F 0.3 - 1 72°F 0.25 - 0.4 91°F 0.2 - 0.25
PERFORMANCE TABLE
*Gallons per minute
NOTES: 1. Temperatures displayed in the table are based on national averages, maximum outlet water temperature is 115°F and may vary +5°F/-10°F.
2. The table is directional and outlet temperatures will vary based on flow rate. 3. Temperature and Flow Rate Reference: 60°F considered cool,
72° considered room temperature and the average garden hose water flow rate is 9 GPM. 4. HotWave is not intended for use as a power or pressure
washer. 5. The temperature rise (outlet temp-inlet temp = temp rise) for each nozzle setting: Blue- 12°F, Orange- 30°F and Red- 49°F.
HOOK ATTACHMENT
POWER INDICATOR LIGHT
25’ ELECTRICAL CORD