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3 Smart Steps for Endless Hot Water
1
Choosing the right EcoSmart tankless electric water
heater depends on your climate. Refer to our map,
chart, and key to determine which model best suits
your location and needs.
The flow rate for each symbol is represented in the GPM
(gallons-per-minute) column of the Application Key. The Range
column indicates variations in GPM for faucets and showers
based on manufacturer and style.
2
Match your location color on the map to the corresponding chart below to determine unit
capacity, or how many faucets and showers can be supported simultaneously
.
3
Verify water heater dimensions and electrical requirements for your chosen product to be sure
that it will best fit your specific water heating needs. This guide was calculated using 240 volts
on all units except for the POU 4T which uses 120 volts to calculate sizing.
Results based on outlet temperature of 105°F. Actual inlet temperature may be affected by
local variations and seasonal changes.
POU 6T 6 0.6
ECO 8 8 0.8
ECO 11 13 1.3
ECO 18 18 1.8
ECO 24 24 2.4
ECO 27 27 2.7
ECO 36 36 3.6
Inlet Temp: 37°F
Model kW GPM Approx Usage
ecosmartus.com 5
|
POU 6T 6 0.6
ECO 8 8 0.8
ECO 11 13 1.4
ECO 18 18 1.9
ECO 24 24 2.6
ECO 27 27 2.9
ECO 36 36 3.9
Inlet Temp: 42°F
Model kW GPM Approx Usage
POU 6T 6 0.7
ECO 8 8 0.9
ECO 11 13 1.5
ECO 18 18 2.1
ECO 24 24 2.8
ECO 27 27 3.1
ECO 36 36 4.2
Inlet Temp: 47°F
Model kW GPM Approx Usage
POU 6T 6 0.7
ECO 8 8 1.0
ECO 11 13 1.7
ECO 18 18 2.3
ECO 24 24 3.1
ECO 27 27 3.4
ECO 36 36 4.6
Inlet Temp: 52°F
Model kW GPM Approx Usage
POU 4T 3.5 0.5
POU 6T 6 0.8
ECO 8 8 1.1
ECO 11 13 1.8
ECO 18 18 2.5
ECO 24 24 3.4
ECO 27 27 3.8
ECO 36 36 5.1
Inlet Temp: 57°F
Model kW GPM Approx Usage
POU 4T 3.5 0.5
POU 6T 6 0.9
ECO 8 8 1.2
ECO 11 13 2.0
ECO 18 18 2.8
ECO 24 24 3.8
ECO 27 27 4.2
ECO 36 36 5.7
Inlet Temp: 62°F
Model kW GPM Approx Usage
POU 4T 3.5 0.6
POU 6T 6 1.0
ECO 8 8 1.4
ECO 11 13 2.3
ECO 18 18 3.2
ECO 24 24 4.3
ECO 27 27 4.8
ECO 36 36 6.4
Inlet Temp: 67°F
Model kW GPM Approx Usage
POU 4T 3.5 0.7
POU 6T 6 1.2
ECO 8 8 1.6
ECO 11 13 2.7
ECO 18 18 3.7
ECO 24 24 4.9
ECO 27 27 5.5
ECO 36 36 7.4
Inlet Temp: 72°F
Model kW GPM Approx Usage
POU 4T 3.5 0.8
POU 6T 6 1.4
ECO 8 8 1.9
ECO 11 13 3.1
ECO 18 18 4.3
ECO 24 24 5.8
ECO 27 27 6.5
ECO 36 36 8.7
Inlet Temp: 77°F
Model kW GPM Approx Usage
Description GPM Range Symbol
Low Flow Faucet 0.5 0.5 –0.9
Bathroom Faucet 1 0.5 –1.3
Kitchen Faucet 1.5 1.0 –2.2
Shower 2 1.5 –2.5
SIZING CHART
SIZING MAP
APPLICATION KEY