---
product_id: 28265008
title: "3.5 GPM Electric Tankless Water Heater 16 kW Real-Time Modulating. Model S-16"
brand: "iheat"
price: "29593 Ft"
currency: HUF
in_stock: false
reviews_count: 6
url: https://www.desertcart.hu/products/28265008-3-5-gpm-electric-tankless-water-heater-16-kw-real
store_origin: HU
region: Hungary
---

# 16 kW high power output 3.5 GPM continuous flow 100% stainless steel heat exchanger 3.5 GPM Electric Tankless Water Heater 16 kW Real-Time Modulating. Model S-16

**Brand:** iheat
**Price:** 29593 Ft
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Power Your Flow, Instantly! ⚡

## Quick Answers

- **What is this?** 3.5 GPM Electric Tankless Water Heater 16 kW Real-Time Modulating. Model S-16 by iheat
- **How much does it cost?** 29593 Ft with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/28265008-3-5-gpm-electric-tankless-water-heater-16-kw-real)

## Best For

- iheat enthusiasts

## Why This Product

- Trusted iheat brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleek & Space-Savvy:** Compact 12x4x8 inch wall-mounted design fits seamlessly into modern indoor spaces.
- • **Certified Safety & Quality:** Backed by UL, ANSI, CSA, and ETL certifications plus lead-free compliance for peace of mind.
- • **Instant Hot Water, No Wait:** Real-time modulating technology delivers precise temperature control for endless hot water on demand.
- • **Energy Smart & Eco-Friendly:** High efficiency reduces energy waste, cutting utility bills while supporting sustainable living.
- • **Effortless Operation & Installation:** Intuitive indicator lights and power button simplify use; easy to install with standard electrical setup.

## Overview

The IHeat S-16 is a 16 kW electric tankless water heater delivering 3.5 gallons per minute of continuous hot water with real-time temperature modulation. Featuring a durable 100% stainless steel heat exchanger and multiple safety certifications, it offers energy-efficient, space-saving indoor installation with easy operation and lead-free construction.

## Description

The IHeat Tankless water heater comes in different models, for the different climate requirements and the heated water need. The IHeat tankless water heaters are designed to heat an incoming water flow up to a maximum output temperature. The performance of each model will depend on the capacity of the model, the heated water demand and the inlet water temperatures. So if your demand for hot water decreases your output water temperatures will increase The success of the iHeat Water Heater experience will depend on the selection of the right model. The IHeat Electric Tankless Water Heater Model S-16 has the capacity of heating 3.5 GPM which is the equivalent to 2 showers (at 1.5 GPM each), and 1 sinks (at 0.50 GPM each) simultaneously, or any combination which equals to 3.5 GPM. The S-16 can handle these applications in the warmer climates of the US which are Florida, Georgia, Louisiana, Texas, Arizona, California, Alabama, and Mississippi. If the IHeat Model S-16 is installed on a cold climate where the inlet water temperature is 40 to 50 Degrees Fahrenheit the heating capacity will be only 1.7 GPM and the performance will be limited to only one application at a time, For example, one shower, or the kitchen at a time. For that cold climate conditions the recommended use for the IHeat S-16 Model is in Point of Use Application. For multi point use or for a full house use you will need a bigger model on those regions.

## Features

- IHeat tankless S-16 is a lead free certified product
- Indicator lights and power button for easy operation
- 2-UL Recognized,ANSI Certified,CSA Certified,ETL Listed
- Very easy to install; Heat Exchanger: 100% Stainless Steel
- Consult electrician. Requires 1-70 Amp Double Pole Breaker

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | IHeat |
| Color | Silver |
| Wattage | 16000 watts |
| Voltage | 2.4E+2 Volts (AC) |
| Efficiency | Energy Efficient |
| Style | Indoor Installation |
| Maximum Operating Pressure | 150 Pound per Square Inch |
| Mounting Type | Wall |
| Is Electric | Yes |
| Manufacturer | iHeat |
| UPC | 753182637112 |
| Part Number | S-16 |
| Item Weight | 8 pounds |
| Product Dimensions | 12 x 4 x 8 inches |
| Item model number | S-16 |
| Is Discontinued By Manufacturer | No |
| Finish | Stainless |
| Shape | Rectangular |
| Amperage Capacity | 66.6 Amps |
| Item Package Quantity | 1 |
| Certification | Low-lead Compliant |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** IHeat
- **Color:** Silver
- **Wattage:** 16000 watts
- **Voltage:** 2.4E+2 Volts (AC)
- **Efficiency:** Energy Efficient

## Images

![3.5 GPM Electric Tankless Water Heater 16 kW Real-Time Modulating. Model S-16 - Image 1](https://m.media-amazon.com/images/I/71-I7Ef7G9L.jpg)
![3.5 GPM Electric Tankless Water Heater 16 kW Real-Time Modulating. Model S-16 - Image 2](https://m.media-amazon.com/images/I/61GYDGKRhxL.jpg)
![3.5 GPM Electric Tankless Water Heater 16 kW Real-Time Modulating. Model S-16 - Image 3](https://m.media-amazon.com/images/I/41Kq5ehykNL.jpg)
![3.5 GPM Electric Tankless Water Heater 16 kW Real-Time Modulating. Model S-16 - Image 4](https://m.media-amazon.com/images/I/719GkZurugL.jpg)
![3.5 GPM Electric Tankless Water Heater 16 kW Real-Time Modulating. Model S-16 - Image 5](https://m.media-amazon.com/images/I/91rRHE7sGNL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent heater.
*by A***R on August 18, 2017*

I got this heater in October of 2016 but couldn't get anyone to install it for me until about a month ago. I purchased the installation from Amazon for around $700 but that did not cover the electrical so I cancelled. A company wanted $1800 to just do the wiring, they came down to $1000 but by this time I did not want to deal with them anymore, finally combined it with additional electrical work in my house and got another company to do the wiring and plumbing for $1200 plus all the other electrical work. So far it works great, the old 50 gallon heater I had had a huge problem with water temperature change every time a toilet was flushed or any other water demand was put on when someone was on the shower. Called a plumbing company for that but for some reason they did not really want to install a tank less heater, they kept on pushing me for another tanked heater, I am done with keeping 50 gallons of hot water in my garage at all times taking up space. This little guy heats up the water fast and when a toilet is flushed I can barely feel a temperature change. My only concern is that it only has a one year warranty and several people have told me that tank less heaters tend to fail often. My city has soft water so I am not too concerned about that but I may end up putting a filter in the line, it is recommended by the manufacturer. By the way, I installed it in a 3 bedroom to bathroom house in south Florida. I live alone but have guests often and so far this little guy has no problems keeping up with all the water demands. If it proves to be reliable it is a great product.

### ⭐⭐ and this leaves us very disappointed. The unit is only serving the kitchen sink ...
*by S***D on November 22, 2017*

We are located in Virginia, 30 miles south of Washington D.C. and we purchased the IHEAT 3.5 GPM, 16 kw, S-60 water heater in September of 2017. We had looked a number of reviews of this and other units, and selected this model based on capacity and electrical requirements. It was installed in October according to all manufacturer requirements, including the input filter and pressure relief valve. But unfortunately, it has not performed as specified, and this leaves us very disappointed.The unit is only serving the kitchen sink and dishwasher, and is located one floor below and about 10 feet away from the sink (about a total of 13 feet of 1/2 inch copper pipe). It takes about 40 seconds to get hot water, and then it goes cold again after about another minute. It then takes another 40 seconds to get hot again, and sometimes will go cold again after a few minutes of operation. And this happens without the dishwasher running, so it is only feeding our kitchen faucet, rated at 1.8 GPM. We will also contact the manufacturer after the holidays before we do another review.

### ⭐⭐⭐⭐⭐ iHeat 3.5 GPM Electric Tankless Water Heater
*by K***N on December 17, 2016*

Excellent product, works great, followed the directions for installation using the correct wire size and breaker on a separate circuit. Set the max temperature of the water I am using at the tank (reading the degrees digitally while pressing the up or down buttons) and it takes about 15 seconds to get to the temperature with outside temps in the 30's and 40's (above grade house) and it maintains the correct temp while in use. With an average size family this unit will save you money right away. It will only use electricity when in use, instead of when using a tank water heater that maintains the water temp constantly heating up several times a day or more.

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-21*