---
title: "Envirotech ESI Technical Data and Sizing"
url: https://tanklesswaterheatersdirect.com/shop/tanklesswaterheaters/electricwaterheaters/electricwaterheaterstechspecs.htm
description: "Technical and Specification Page For more technical information -download a ESI 2000 Envirotech installation manual"
---

# Envirotech ESI Technical Data and Sizing

Specification data recorded on this site for Envirotech ESI Technical Data and Sizing.

## Envirotech Electric Tankless Water Heater

Technical and Specification Page For more technical information -download a ESI 2000 Envirotech installation manual

## Flow Rates

| Model | 55F deg Rise | 50F deg Rise | 43F deg Rise | 39F deg Rise |
|---|---|---|---|---|
| ESI 2000 4.12 | 3.5 gpm | 4 gpm | 4.5 gpm | 5 gpm |

Flow rates calculated at 240 volts, lower voltage input will reduce temperature rise.

## Envirotech Sizing Chart

| Model | Capacity (Assumes 50 degree input water) |
|---|---|
| ESI 2000 4.12 | Provides 3.2 gallons per minute for water usage at 115°f: 2 sinks at once, dishwasher   Provides 3.8 gallons per minute for water usage at 105°f: 2 sinks at once or 1 shower, bathtub fills in about 7 minutes. This assumes a 50 degree ground (input water) - the higher the input water the more hot water you will get out. |

## Specifications

| Model | Volts | Kilowatts | Amps | Wire Size | Weight | Dimensions |
|---|---|---|---|---|---|---|
| ESI 2000 4.12 | 240v | 28 kw | 120 (4 x 30a)   Comes with sub-panel and breakers | 10 ga. | 21 lbs. | 16" x 13.6" x 3.5" |

## Misc Info

| Model | ESI 2000 4.12 |
|---|---|
| Minimum Flow Rate GPM | .4 GPM |
| Water Input/Ouput | 3/4 inch |
| Minimum Water PSI | 10 PSI |
| Maxamum Water PSI | 90 PSI |

## Warranty

The ESI 2000 is guaranteed for life against leakage or rupture.