---
product_id: 54112092
title: "RTEX-24"
brand: "rheem"
price: "KD 248.57"
currency: KWD
in_stock: true
reviews_count: 13
category: "Rheem"
url: https://www.desertcart.com.kw/products/54112092-rtex-24
store_origin: KW
region: Kuwait
---

# 24kW high power output 5.9 GPM continuous flow Compact 93% smaller size RTEX-24

**Brand:** rheem
**Price:** KD 248.57
**Availability:** ✅ In Stock

## Summary

> 🔥 Never run out, never waste — hot water on demand, redefined! ⚡

## Quick Answers

- **What is this?** RTEX-24 by rheem
- **How much does it cost?** KD 248.57 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/54112092-rtex-24)

## 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 Design:** Up to 93% smaller than traditional tanks, freeing up valuable space in your home.
- • **Powerhouse Performance:** Delivers a robust 24kW output for uninterrupted hot water, perfect for whole-home use.
- • **Smart Installation Ready:** Requires 3 x 40 AMP breakers and 200 AMP service—engineered for modern homes with high electrical capacity.
- • **Energy Efficiency Champion:** 99.8% efficient, eliminating standby heat loss and slashing your energy bills.
- • **Precision Temperature Control:** Adjust water temperature in 1-degree increments from 80°F to 140°F with an intuitive digital display.

## Overview

The RTEX-24 is a 24kW, 240V electric tankless water heater by Rheem, offering continuous hot water flow at 5.9 gallons per minute. Its compact, wall-mounted stainless steel design is 93% smaller than traditional tanks, making it ideal for space-conscious, energy-efficient homes. Featuring precise digital temperature control and requiring a 200 AMP household electrical service with 3 double pole 40 AMP breakers, it delivers reliable, on-demand hot water with 99.8% energy efficiency.

## Description

The Professional Classic Tankless Electric RTEX-24 240V is engineered to provide continuous hot water on demand, making it ideal for both single point-of-use and multiple applications, with a remarkable flow rate of 5.9 GPM. Its compact design is up to 93% smaller than traditional electric water heaters, allowing for significant space savings, while its energy-efficient operation eliminates standby heat loss when installed near the point-of-use. See performance guide for average expectations in your region based on ground water temperature and application usage. 3 x 40 AMP Double Pole Breakers Required. 200 AMP Household service recommended. Ensure your home can accomodate the power supply and that enough space is available in your breaker panel for this unit.

Review: Tankless Hot Water install - I replaced a 55 gallon hot water tank with this unit, I bought a little larger unit than what the ratings said I needed to be safe. Make sure you check your electrical panel to make sure you have room for 3 x 40 double pole 40 amp circuit breakers. I didn’t have enough room, had to add a sub panel plus had to run 9 x 8 gauge wires the unit requires. I’m pretty handy, but asked a certified electrician to help me with the pre wiring. To be honest, I would have been afraid to try and do this myself even with all my experience. Installation was pretty simple after you have the wiring installed. Use 1 inch piping from your electrical panel to the tankless electrical unit or you won’t be able to pull the nine 8 gauge wires through the pipe. I also suggest having an electrical panel with a main breaker so you don’t have to shut the whole house down for the final install. Additionally i installed a surge protector to hopefully protect the unit from power surges which appears to have delicate electronics inside. We’ve only had this unit in operation for 4 days so far, but the water is really hot, have had no issues at this point and I love the added space gained without having the tank. Time will tell if we save 50% on energy, but from all my research it makes sense even with us living in a warm climate. There are several tankless unit manufacturers with great ratings, I went with Rheem because if I have an issue, they are based in the USA and hopefully that means English speaking in my time zone….. Hope my review is helpful to you. Update: it’s been 7 months, still works great, very happy with this decision even though I can say I’ve seen significant energy savings
Review: Tankless water heater - Great system, easy to install. Was a 1/2 day project but over all I'm very pleased on the outcome. The temperature is very easy to set and instant hot on demand was a plus. I did have to add a sub panel

## Features

- ELECTRICAL REQUIREMENTS: 3 x 40 AMP Double Pole Breakers Required. 200 AMP Household service recommended. Ensure your home can accomodate the power supply and that enough space is available in your breaker panel for this unit. RTEX-24 model is 100A, 24kw, 240V.
- PROVEN PERFORMANCE: Continuous hot water when you need it for the whole home (review performance guide image to confirm this water heater will provide the hot water needed based on geographic location). Ground water temperature impacts temperature rise and gallons per minute.
- EASILY ADJUSTABLE: ON/OFF Dial Control with adjustable digital temperature display allows for adjustments in 1-degree increments from 80-140 degrees F.
- EFFICIENT: Tankless electric water heaters save space, energy, money, and require no venting.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MS9DVEE |
| Best Sellers Rank | #7,315 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Water Heaters |
| Brand | Rheem |
| Brand Name | Rheem |
| Capacity | 5.9 Gallons |
| Color | Gray |
| Customer Reviews | 4.2 out of 5 stars 3,999 Reviews |
| Efficiency | 99.8% Energy efficient |
| Flow Rate | 5.9 Gallons Per Minute |
| Global Trade Identification Number | 00020352685397 |
| Heat Output | 24 Kilowatts |
| Included Components | Fittings, Aerators |
| Is Electric | Yes |
| Item Depth | 3.5 inches |
| Item Dimensions W x H | 17.63"W x 18.25"H |
| Item Type Name | Water Heater |
| Item Weight | 17.8 Pounds |
| Manufacturer | Rheem |
| Manufacturer Part Number | RTEX-24 |
| Material Type | Stainless Steel |
| Maximum Pressure | 150 Pound per Square Inch |
| Maximum Temperature | 140 Degrees Fahrenheit |
| Model Number | RTEX-24 |
| Mount Type | Wall |
| Power Source | Corded Electric |
| Product Dimensions | 17.63"W x 18.25"H |
| Special Feature | LED Display |
| Special Features | LED Display |
| Style Name | Whole Home, 24 kw |
| UPC | 020352685397 |
| Unit Count | 1.0 Count |
| Voltage | 240 Volts |
| Wattage | 24 KW |

## Product Details

- **Brand:** Rheem
- **Capacity:** 5.9 Gallons
- **Power Source:** Corded Electric
- **Product Dimensions:** 17.63"W x 18.25"H
- **Special Feature:** LED Display

## Images

![RTEX-24 - Image 1](https://m.media-amazon.com/images/I/A1Xd-sywn+L.jpg)
![RTEX-24 - Image 2](https://m.media-amazon.com/images/I/91kjnZtLt2L.jpg)
![RTEX-24 - Image 3](https://m.media-amazon.com/images/I/8174CmMnmwL.jpg)
![RTEX-24 - Image 4](https://m.media-amazon.com/images/I/61PCrI8GdkL.jpg)
![RTEX-24 - Image 5](https://m.media-amazon.com/images/I/71LH0jtHwnL.jpg)

## Available Options

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

## Questions & Answers

**Q: Can this directly replace a 40 gal tank heater with a 30A double pole breaker? What are power requrements?**
A: No it can't. RTEX-24 requires 3 sets of wire and ground, and it needs 3x 40amp breaker.  That's a total of 120amps

**Q: Why are 2 answers for the breaker requirements. Is it 3 double 40 or 3 double 60 amp**
A: If the unit draws 40 amp. you need a 2 pole 40 amp breaker 2 #8 wires good for 40 amp and 1 # 10 wire for a bond. Now if the unit draws 60 amps you need 2 # 6's good for 65 amps. A 2 pole 60 amp breaker and 1 # 8 for a bond( ground wire).

**Q: Has anyone had a noticable difference in electric bill?**
A: Yes, reduced electricity by about 20%. But this thing sucks. It has trouble keeping up with water flow and is noisy.  Their support is atrocious. I would not recommend it. Select a different brand.

**Q: Can the unit operate as a rtex-18 if i only hook up 2 of the elements? because i only need the 18 specs as of now but would like the option to upgrade**
A: Actually you can do this but you must be careful on which circuits are connected. Rheem says the elements are activated from right to left as power is required. The right most element connection also provides power to the control so this must always be connected. If the very left element is left disconnected, you will only get 2/3 of the rated power on a 3 element unit.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Tankless Hot Water install
*by A***R on May 6, 2025*

I replaced a 55 gallon hot water tank with this unit, I bought a little larger unit than what the ratings said I needed to be safe. Make sure you check your electrical panel to make sure you have room for 3 x 40 double pole 40 amp circuit breakers. I didn’t have enough room, had to add a sub panel plus had to run 9 x 8 gauge wires the unit requires. I’m pretty handy, but asked a certified electrician to help me with the pre wiring. To be honest, I would have been afraid to try and do this myself even with all my experience. Installation was pretty simple after you have the wiring installed. Use 1 inch piping from your electrical panel to the tankless electrical unit or you won’t be able to pull the nine 8 gauge wires through the pipe. I also suggest having an electrical panel with a main breaker so you don’t have to shut the whole house down for the final install. Additionally i installed a surge protector to hopefully protect the unit from power surges which appears to have delicate electronics inside. We’ve only had this unit in operation for 4 days so far, but the water is really hot, have had no issues at this point and I love the added space gained without having the tank. Time will tell if we save 50% on energy, but from all my research it makes sense even with us living in a warm climate. There are several tankless unit manufacturers with great ratings, I went with Rheem because if I have an issue, they are based in the USA and hopefully that means English speaking in my time zone….. Hope my review is helpful to you. Update: it’s been 7 months, still works great, very happy with this decision even though I can say I’ve seen significant energy savings

### ⭐⭐⭐⭐⭐ Tankless water heater
*by P***O on May 3, 2026*

Great system, easy to install. Was a 1/2 day project but over all I'm very pleased on the outcome. The temperature is very easy to set and instant hot on demand was a plus. I did have to add a sub panel

### ⭐⭐⭐⭐⭐ Easy installation. Works well.
*by K***N on March 29, 2026*

Just installed. Works well. Hope it will last longer than the off brand one we had before. Very easy installation due to being a replacement for the same style unit. Electrical, plumbing and mounting locations all the same.

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-05-16*