Use and Care Guide

Flow Rate GPM
Temp Rise °F
Tempra
®
12
Tempra
®
15
Tempra
®
20
Tempra
®
24
Tempra
®
29
Tempra
®
36
10
20
30
40
50
80
90
70
60
0
1.00.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5
5.0 5.5 6.0 6.5 7.0 7.5 8.0
Temperature Rise vs. Flow Rate at 240 V
Easy To Size For Every Home
Find the right size
Stiebel Eltron customer service provides sales assistance for
our water heaters, including sizing recommendations, to both
homeowners and professional installers. Please call or email
if you have any questions.
SIMULTANEOUS
FIXTURES
42°F 52°F 62°F 72°F
Tempra
®
12
Trend & Plus
DRAWS 50 A - Requires minimum 100 A electric service
Tempra
®
Trend
&
Tempra
®
Plus Tankless Electric Water Heater Sizing Guide
MAX. FLOW RATE FROM UNIT
1.3 GPM 1.6 GPM 1.9 GPM 2.5 GPM
Tempra
®
24
Trend & Plus
DRAWS 100 A - Requires minimum 150 A electric service
Tempra
®
15
Trend & Plus
DRAWS 60 A - Requires minimum 100 A electric service
1.6
GPM 1.9 GPM 2.4 GPM 3.1 GPM
Tempra
®
20
Trend & Plus
DRAWS 80 A - Requires minimum 125 A electric service
2.1
GPM 2.5 GPM 3.1 GPM 4 GPM
Tempra
®
29
Trend & Plus
DRAWS 120 A - Requires minimum 200 A electric service
3.1
GPM 3.7 GPM 4.6 GPM 6 GPM
Tempra
®
36
Trend & Plus
DRAWS 150 A - Requires minimum 300 A electric service
3.9
GPM 4.6 GPM 5.7 GPM 7.5 GPM
1 Use the map to find the approximate ground
water temperature where you live.
2 Check the column on the table with your
ground water temperature to see how many
fixtures can be supplied at the same time with
hot water.
3 Use your actual maximum flow rate to fine-
tune these recommendations. If you know you
have 1.5 GPM low flow showerheads, for
instance, then 3 GPM would supply 2 showers
at the same time, or 1 shower plus 1 sink, etc.
MAX. FLOW RATE CALCULATED FOR 105°F WATER
SHOWER
1.5 GPM
(RANGE 1.5-2.5)
KITCHEN SINK
1.5 GPM
(RANGE 1.0-2.2)
BATHROOM SINK
0.5 GPM
(RANGE 0.5-1.0)
FIXTURE FLOW RATES
(AND TYPICAL RANGES)
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
42°F
52°F
72°F
62°F
2.6 GPM 3.1 GPM 3.8 GPM 5 GPM
Low
Flow
SIMULTANEOUS
FIXTURES
42°F 52°F 62°F 72°F
Tempra
®
12
Trend & Plus
DRAWS 50 A - Requires minimum 100 A electric service
Tempra
®
Trend
&
Tempra
®
Plus Tankless Electric Water Heater Sizing Guide
MAX. FLOW RATE FROM UNIT
1.3 GPM 1.6 GPM 1.9 GPM 2.5 GPM
Tempra
®
24
Trend & Plus
DRAWS 100 A - Requires minimum 150 A electric service
Tempra
®
15
Trend & Plus
DRAWS 60 A - Requires minimum 100 A electric service
1.6
GPM 1.9 GPM 2.4 GPM 3.1 GPM
Tempra
®
20
Trend & Plus
DRAWS 80 A - Requires minimum 125 A electric service
2.1
GPM 2.5 GPM 3.1 GPM 4 GPM
Tempra
®
29
Trend & Plus
DRAWS 120 A - Requires minimum 200 A electric service
3.1
GPM 3.7 GPM 4.6 GPM 6 GPM
Tempra
®
36
Trend & Plus
DRAWS 150 A - Requires minimum 300 A electric service
3.9
GPM 4.6 GPM 5.7 GPM 7.5 GPM
1 Use the map to find the approximate ground
water temperature where you live.
2 Check the column on the table with your
ground water temperature to see how many
fixtures can be supplied at the same time with
hot water.
3 Use your actual maximum flow rate to fine-
tune these recommendations. If you know you
have 1.5 GPM low flow showerheads, for
instance, then 3 GPM would supply 2 showers
at the same time, or 1 shower plus 1 sink, etc.
MAX. FLOW RATE CALCULATED FOR 105°F WATER
SHOWER
1.5 GPM
(RANGE 1.5-2.5)
KITCHEN SINK
1.5 GPM
(RANGE 1.0-2.2)
BATHROOM SINK
0.5 GPM
(RANGE 0.5-1.0)
FIXTURE FLOW RATES
(AND TYPICAL RANGES)
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
42°F
52°F
72°F
62°F
2.6 GPM 3.1 GPM 3.8 GPM 5 GPM
Low
Flow
1 Use the map to find the approximate ground water temperature
where you live.
2 Check the column on the table with your ground water temperature
to see how many fixtures can be supplied at the same time with
hot water.
3 Use your actual maximum flow rate to fine- tune these recommen-
dations. If you know you have 1.5 GPM low flow showerheads, for
instance, then 3 GPM would supply 2 showers at the same time, or
1 shower plus 1 sink, etc.