---
product_id: 497071557
title: "Rheem RTEX-36 36kW Electric Tankless Water Heater 240V Ext Adj Temp Ctrl Bot 3/4 in. Npt Con"
brand: "rheem"
price: "$3073"
currency: NZD
in_stock: true
reviews_count: 7
category: "Rheem"
url: https://www.desertcart.nz/products/497071557-rheem-rtex-36-36kw-electric-tankless-water-heater-240v-ext
store_origin: NZ
region: New Zealand
---

# Rheem RTEX-36 36kW Electric Tankless Water Heater 240V Ext Adj Temp Ctrl Bot 3/4 in. Npt Con

**Brand:** rheem
**Price:** $3073
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Rheem RTEX-36 36kW Electric Tankless Water Heater 240V Ext Adj Temp Ctrl Bot 3/4 in. Npt Con by rheem
- **How much does it cost?** $3073 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/497071557-rheem-rtex-36-36kw-electric-tankless-water-heater-240v-ext)

## Best For

- rheem enthusiasts

## Why This Product

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

## Description

Experience efficient and endless hot water with the Rheem RTEX-36 36kW Electric Tankless Water Heater. Designed for 240V, it features an external adjustable temperature control and 3/4 in. NPT connections at the bottom. Ideal for residential or commercial use, this water heater provides reliable and on-demand hot water.

Review: Great update for the home. - We have a 3 full bath home and live in the snow belt. This water heater never lets us down when it comes to hot water. Had to get used to waiting a little longer than a standard tank heater for the water to get hot but so worth it. More space in my utility room, clean and sleek looking on the wall, no more worrying about a leaking water heater, and should it ever need replaced you don't need two men to help get it out of the basement.
Review: Great heater - Excellent water heater. It provides plenty of hot water all over our 2500 sq ft house.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07CVPM1DK |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #298,682 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #401 in Water Heaters |
| Brand | Rheem |
| Color | Silver |
| Customer Reviews | 4.2 4.2 out of 5 stars (19) |
| Date First Available | June 10, 2018 |
| Efficiency | 99.8% |
| Heat Output | 36000 Watts |
| Is Electric | Yes |
| Item Weight | 24.3 pounds |
| Item model number | RTEX-36 |
| Manufacturer | Rheem |
| Maximum Flow Rate | 6 Gallons Per Minute |
| Maximum Temperature | 140 Degrees Fahrenheit |
| Mounting Type | Wall |
| Package Dimensions | 24 x 21.1 x 6.3 inches |
| Special Feature | Energy efficient, digital temperature control, compact and stylish design |
| Special Features | Energy efficient, digital temperature control, compact and stylish design |
| Style | Indoor Installation |
| UPC | 826659182061 |
| Voltage | 240 Volts |
| Wattage | 36 KW |

## Product Details

- **Brand:** Rheem
- **Capacity:** 6 Gallons
- **Color:** Silver
- **Power Source:** Corded Electric
- **Special Feature:** Energy efficient, digital temperature control, compact and stylish design

## Images

![Rheem RTEX-36 36kW Electric Tankless Water Heater 240V Ext Adj Temp Ctrl Bot 3/4 in. Npt Con - Image 1](https://m.media-amazon.com/images/I/51gDh972aTL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great update for the home.
*by S***R on January 29, 2026*

We have a 3 full bath home and live in the snow belt. This water heater never lets us down when it comes to hot water. Had to get used to waiting a little longer than a standard tank heater for the water to get hot but so worth it. More space in my utility room, clean and sleek looking on the wall, no more worrying about a leaking water heater, and should it ever need replaced you don't need two men to help get it out of the basement.

### ⭐⭐⭐⭐⭐ Great heater
*by D***N on January 29, 2026*

Excellent water heater. It provides plenty of hot water all over our 2500 sq ft house.

### ⭐⭐⭐⭐⭐ Excellent product
*by C***. on January 5, 2025*

I bought this brand because I’ve been through two Ecosmart tankless heaters. Both of them were good for about a year and then the problems begin. I was fed up with bringing a multi meter down to the basement and spending an hour trying to diagnose which component had malfunctioned. Spent the extra money and went with Rheem because I’ve seen that brand at many expensive houses I work at. I installed the heater today and put it on 140 degrees to test it out. The water was so hot I couldn’t even touch it. Even when the Ecosmart units were brand new they never heated water like this. Rheem has a higher flow rate which makes all the difference. I highly recommend this unit and you should spend the extra money.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.nz/products/497071557-rheem-rtex-36-36kw-electric-tankless-water-heater-240v-ext](https://www.desertcart.nz/products/497071557-rheem-rtex-36-36kw-electric-tankless-water-heater-240v-ext)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-04*