3 Smart Steps For Endless Hot Water

1 The EcoSmart tankless water heater you choose depends on your climate. Refer to this chart to find out which model best suits your needs.

37˚F42˚F47˚F52˚F57˚F

62˚F67˚F72˚F77˚F

3 Check dimensions and electrical specifications in the chart below.

POU 3.5

POU 6

ECO 8

ECO 11

ECO 18

ECO 24

ECO 27

ECO 36

Model Number kW Volts Required Max Power Required Dimensions WeightBreaker (AMP) Wire

3.5 120 30 29 10 7ʺ x 11ʺ x 3ʺ 4 lbs.

6 208 30 29 10 7ʺ x 11ʺ x 3ʺ 4 lbs.

8 240 40 33 8 12ʺ x 9.75ʺ x 3.75ʺ 4.75 lbs.

13 240 60 57 (2) 6 12ʺ x 9.75ʺ x 3.75ʺ 6.5 lbs.

18 240 (2) 40 75 (2) 8 18ʺ x 14ʺ x 3.75ʺ 11.25 lbs.

24 240 (3) 40 100 (3) 8 18ʺ x 17ʺ x 3.75ʺ 13.75 lbs.

27 240 (3) 40 112.5 (3) 8 18ʺ x 17ʺ x 3.75ʺ 13.75 lbs.

36 240 (4) 40 150 (4) 8 17ʺ x 19ʺ x 3.75ʺ 17.4 lbs.

2 Match your location on the map, shown above, to the corresponding chart below to determine unit capacity.

Results based on outlet temperature of 105°F.

Represents a hand sink faucet opened full with a flow of ½ GPM

Represents a water- saver shower open full with 1½ GPM

POU 6 0.6ECO 8 0.8ECO 11 1.3ECO 18 1.8ECO 24 2.4ECO 27 2.7ECO 36 3.6

Inlet Temp: 37°FModel GPM Approx. Usage

POU 6 0.8ECO 8 1.0ECO 11 1.7ECO 18 2.3ECO 24 3.1ECO 27 3.5ECO 36 4.6

Inlet Temp: 52°FModel GPM Approx. Usage

POU 6 0.7ECO 8 0.9ECO 11 1.4ECO 18 2.0ECO 24 2.6ECO 27 2.9ECO 36 3.9

Inlet Temp: 42°FModel GPM Approx. Usage

POU 3.5 0.7POU 6 1.2ECO 8 1.7ECO 11 2.7ECO 18 3.7ECO 24 5.0ECO 27 5.6ECO 36 7.5

Inlet Temp: 72°FModel GPM Approx. Usage

POU 6 0.7ECO 8 0.9ECO 11 1.5ECO 18 2.1ECO 24 2.8ECO 27 3.2ECO 36 4.2

Inlet Temp: 47°FModel GPM Approx. Usage

POU 3.5 0.6POU 6 1.0ECO 8 1.3ECO 11 2.1ECO 18 2.9ECO 24 3.8ECO 27 4.3ECO 36 5.7

Inlet Temp: 62°FModel GPM Approx. Usage

Average Gallons Per Minute (GPM)

based on 2010 Plumbing Standards

ApplicationsWater-Saver Shower HeadStandard Shower HeadStandard Hand SinkKitchen SinkBath TubDishwasherWashing Machine

1.5 GPM

2.0 GPM

0.5 GPM

1-2 GPM≥ 4 GPM1-2 GPM1-1.5 GPM

POU 3.5 0.6POU 6 1.1ECO 8 1.4ECO 11 2.3ECO 18 3.2ECO 24 4.3ECO 27 4.9ECO 36 6.5

Inlet Temp: 67°FModel GPM Approx. Usage

POU 3.5 0.5POU 6 0.9ECO 8 1.1ECO 11 1.9ECO 18 2.6ECO 24 3.4ECO 27 3.8ECO 36 5.1

Inlet Temp: 57°FModel GPM Approx. Usage

POU 3.5 0.9POU 6 1.5ECO 8 2.0ECO 11 3.2ECO 18 4.4ECO 24 5.9ECO 27 6.6ECO 36 8.8

Inlet Temp: 77°FModel GPM Approx. Usage