---
product_id: 71382367
title: "Rheem 11kW 240V Tankless Electric Water Heater"
brand: "rheem"
price: "€ 644.84"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fi/products/71382367-rheem-11kw-240v-tankless-electric-water-heater
store_origin: FI
region: Finland
---

# 11kW high power output 2.68 GPM max flow rate Adjustable digital temp display Rheem 11kW 240V Tankless Electric Water Heater

**Brand:** rheem
**Price:** € 644.84
**Availability:** ✅ In Stock

## Summary

> 🔥 Power up your hot water game with Rheem’s sleek, smart tankless solution!

## Quick Answers

- **What is this?** Rheem 11kW 240V Tankless Electric Water Heater by rheem
- **How much does it cost?** € 644.84 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/71382367-rheem-11kw-240v-tankless-electric-water-heater)

## Best For

- rheem enthusiasts

## Why This Product

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

## Key Features

- • **Space-Saving Sleek Design:** Compact and wall-mountable, this unit is 90% smaller than traditional tanks—perfect for modern minimalist spaces.
- • **Instant Hot Water, Zero Wait:** On-demand heating delivers endless hot water exactly when you need it, eliminating cold showers and wasted wait time.
- • **Energy Smart & Cost Efficient:** Self-modulating power control means it only uses energy when water flows, slashing your utility bills and carbon footprint.
- • **Precision Temperature Control:** Easily dial in your perfect temperature with the sleek digital display for consistent comfort every time.
- • **Durable & Reliable Performance:** Built by Rheem with 99.8% efficiency and robust 150 PSI pressure tolerance for long-lasting, worry-free operation.

## Overview

The Rheem 11kW 240V Tankless Electric Water Heater offers a compact, energy-efficient solution for continuous hot water on demand. Featuring a digital temperature display, self-modulating power control, and a maximum flow rate of 2.68 gallons per minute, it’s designed for point-of-use applications with 99.8% efficiency and easy wall mounting. Save space, energy, and money with this modern upgrade to traditional water heating.

## Description

Rheem 11kW 240V Tankless Electric Water Heater

## Features

- ON/OFF Dial Control with adjustable digital temperature display
- Self-modulating power control
- 11kW Model Flow Rate: up to 2.68 GPM
- Side 1/2" NPT water connections
- On demand, consistent and continuous hot water

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Rheem |
| Product Dimensions | 8.25"W x 12.63"H |
| Special Feature | LED Display |
| Color | Gray |
| Wattage | 11 KW |
| Voltage | 240 Volts |
| Maximum Flow Rate | 2.68 Gallons Per Minute |
| Heat Output | 11 Kilowatts |
| Efficiency | 99.8% |
| Style | Point-of-Use, 11 kw |
| Maximum Operating Pressure | 150 |
| Mounting Type | Wall |
| Is Electric | Yes |
| Manufacturer | Rheem |
| UPC | 020352685380 |
| Manufacture Year | 2023 |
| Global Trade Identification Number | 00020352685380 |
| Model | Professional Classic Tankless Electric RTEX-11 |
| Item Weight | 7.04 pounds |
| Item model number | RTEX-11 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | RTEX-11 |
| Special Features | LED Display |
| Amperage | 46 Amps |

## Product Details

- **Brand:** Rheem
- **Capacity:** 2.68 Gallons
- **Power Source:** ['ac']
- **Product Dimensions:** 8.25"W x 12.63"H
- **Special Feature:** LED Display

## Images

![Rheem 11kW 240V Tankless Electric Water Heater - Image 1](https://m.media-amazon.com/images/I/91SvFGwNeyL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: How many gallons per minute?**
A: Hello-The GPM changes with the temp rise needed.... so its a sliding scale.Here is a performance chart you can review - http://www.rheem.com/product/tankless-electric-water-heaters-professional-classic-series-rtex-08-rtex-11-rtex-13 Go to - Specs/Docs tabI hope this helps :)ThanksBen

**Q: Can this water heater be used with a water softener that uses salt? Or will it damage it?**
A: You can use a water softener with the tankless water heater

**Q: Use inline with hot water line instead of cold? Wanting to use for outdoor shower and point of use for bathtub**
A: I am using this as a secondary hot water heater for my solar system.  Seems like a similar use as I supply it with up to 130 degree water.  It will adjust to heat the water to it's set point and heat no further.  if the water is already hot id does not turn on.

**Q: If i uninstall my hot water heater then instal the tankless will this still allow hot water throughout the house water supp???**
A: In theory, yes. The Rheem 11kW 240v Tankless Electric may not have enough power to supply a house with hot water. The 11kW is used at end destinations or can heat enough water for one bathroom or kitchen. If you have multiple bathrooms, look into putting one in each area; that way, you only heat water in the area you need. I recommend calling our tech support line at 800.374.8806 so that they can properly size the tankless water heater to fit your needs before you invest your time and money in purchasing the wrong unit.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect
*by S***H on August 24, 2025*

After having to take cold showers for a whole week, this thing is amazing! It took my partner 30 minutes to hook it up to the plumping and the electrical work.It works great, it takes 3 seconds for it to turn out after turning on sink or shower then about 30 seconds to feel the water to start heating up even with our big shower head.

### ⭐⭐⭐⭐⭐ Best for your buck
*by N***N on August 6, 2025*

let’s just say the water flow is amazing. The water temperature is amazing this value you cannot beat. The quality is amazing. The easy installation does not get any easier than this.We have purchased two of these and we have had no issues with them. We would not have hot showers if we did not own these.

### ⭐ Don't heat water fast enough
*by B***E on April 19, 2025*

Nice and small unit . But not real impressive. If you just barely turn water on to a trickle it heats up water hot. But the higher you turn on water the colder it gets.... the unit does not have enough chambers to heat up the water fast enough... no I would not buy again

## Frequently Bought Together

- Rheem 11kW 240V Tankless Electric Water Heater
- HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass
- Waterdrop AP431 AP430SS Whole House Scale Inhibitor Filter, Heater Softener System, Prevent Scale Build Up On Hot Water Heaters, Pipes and Boilers

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**Shop now:** [https://www.desertcart.fi/products/71382367-rheem-11kw-240v-tankless-electric-water-heater](https://www.desertcart.fi/products/71382367-rheem-11kw-240v-tankless-electric-water-heater)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-05*