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Item #:
3546539
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY
90% of respondents would recommend this to a friend
Item #:
3546539
XAF 224497
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
QTY:
Order now and get it around Wednesday, September 30
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Continuous hot water on demand with precise temperature control
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What Stands Out
Instant Hot Water
Delivers hot water on demand, eliminating waiting time and conserving energy by only heating water when needed. Ideal for busy households seeking efficiency.
Compact Design
Space-saving, sleek design fits seamlessly in residential spaces, maximizing utility without taking up valuable storage areas, perfect for apartments and smaller homes.
Energy Efficient
Operates at a high energy factor, significantly reducing energy bills while providing reliable hot water, making it a cost-effective solution for eco-conscious consumers.
Product Details
- Professional classic® tankless electric water heater for continuous and on-demand hot water
- External adjustable digital thermostatic control with LED display (+/1 degree accuracy)
- Durable Copper immersion heating elements, field serviceable, and self-modulating power control
- Simple installation with included 1/2 NPT adapters and 1/2 inch Compression water connections
- 99.8% energy efficient with external controls to adjust temperature in 1°f increments
- Water-Saver Shower Head included for 1.5 GPM flow rate, threaded for easy replacement, and digital temperature display
| Power Source | Electric |
| Special Features | LED Display |
| Wattage | 13 KW |
| Voltage | 240 volts |
| Flow Rate | 4.8 gpm |
| Maximum Temperature | 140 °F |
| Heat Output | 13 KW |
| Efficiency | at least 99.8% energy efficient |
| Mount Type | Wall |
| Capacity | 1.5 gallons |
| Item Dimensions W x H | 8.25"W x 12.62"H |
| Item Weight | 1.8 kg |
| Item Depth | 0.5 inches |
| Material Type | Copper |
| Brand Name | Rheem |
| Model Number | RTEX-13 |
| Number of Items | 1 |
| Unit Count | 1 Count |
| Manufacturer | Rheem |
| UPC | 020352685328 |
| Global Trade Identification Number | 00020352685328 |
| Included Components | Rheem RTEX-13 Residential Tankless Water Heater |
| Item Type Name | Rheem RTEX-13 Residential Tankless Water Heater |
| Manufacturer Part Number | RTEX-13 |
| Color | Gray |
| Style Name | Heater |
| Brand | Rheem |
| Product Dimensions (L x W x H) | 8.25"W x 12.62"H (21 x 32.1 cm) |
| Special Feature | LED Display |
Who Should Buy?
-
Small Households
Ideal for small homes or apartments needing consistent hot water with limited demand, ensuring efficiency and minimal energy waste.
-
Eco-Conscious Users
Perfect for eco-friendly consumers focused on energy efficiency, helping reduce carbon footprint with on-demand hot water.
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DIY Enthusiasts
Designed for users comfortable with basic plumbing tasks, allowing for quick and easy installation without professional help.
-
Large Families
Not suitable for large households requiring simultaneous hot water use, as it may struggle to meet high demand.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the energy efficiency rating of the Rheem 240V Heating Chamber RTEX-13?
Answer: The Rheem RTEX-13 tankless water heater boasts an energy efficiency rating of up to 99%. This high efficiency means that almost all the electricity consumed is effectively utilized to heat water, minimizing wasted energy. This is particularly beneficial for homeowners looking to reduce their utility bills and environmental impact. For instance, if you use hot water infrequently throughout the day, this model heats water instantly on demand, ensuring you're not heating a tank of water that's just sitting there. -
Question:
How is the Rheem RTEX-13 installed?
Answer: Installing the Rheem RTEX-13 involves a straightforward process, typically requiring a licensed electrician due to its 240V power supply. The unit can be mounted on a wall, saving space in your home. It’s advisable to consult the installation manual or hire a professional to ensure proper connection to your existing plumbing and electrical systems. Homeowners often find it suitable for smaller homes or as a supplemental heater for specific areas like kitchens and bathrooms, delivering hot water right where it’s needed. -
Question:
What are the dimensions of the Rheem RTEX-13?
Answer: The Rheem 240V Heating Chamber RTEX-13 measures approximately 14.5 inches in height, 18.5 inches in width, and 5 inches in depth. Its compact size makes it an ideal choice for residential spaces with limited room for storage. This small footprint allows homeowners to install it in closets or utility rooms without taking up valuable living space. It’s particularly advantageous for urban living, where maximizing space is crucial. -
Question:
Can the Rheem RTEX-13 handle multiple simultaneous outlets?
Answer: The Rheem RTEX-13 is designed to provide hot water for a single outlet at a time, making it ideal for smaller households or specific uses like a kitchen sink or shower. For homes requiring hot water for multiple outlets simultaneously, it may be more effective to consider a larger tankless model or multiple units. This means you can efficiently manage your hot water needs, especially during peak usage times, ensuring consistent performance where it matters most. -
Question:
Does the Rheem RTEX-13 come with digital temperature controls?
Answer: Yes, the Rheem RTEX-13 features digital temperature controls, allowing users to easily set and adjust the water temperature to their preference. This convenience empowers you to fine-tune the heating level, ensuring comfort while also optimizing energy use. Whether you want hot water for cooking, showering, or cleaning, having precise control means you won’t run out of hot water unexpectedly, enhancing your daily routines. -
Question:
What is the flow rate of the Rheem RTEX-13?
Answer: The Rheem RTEX-13 offers a flow rate of approximately 3.17 gallons per minute (GPM) at a temperature rise of 35°F, which is suitable for most common residential hot water needs. This flow rate allows for comfortable usage in smaller homes with one or two bathrooms. For example, during a busy morning, you can comfortably take a shower while the kitchen faucet is running without compromising water temperature or pressure. -
Question:
Is the Rheem RTEX-13 suitable for outdoor installation?
Answer: No, the Rheem RTEX-13 is not designed for outdoor installation. It is intended for indoor use only, ensuring optimal performance and safety in protected environments. Installing it indoors helps maintain temperature efficiency and prolongs the lifespan of the unit, avoiding exposure to the elements that could cause wear and tear. For outdoor needs, consider specific models designed to withstand weather conditions. -
Question:
What kind of maintenance does the Rheem RTEX-13 require?
Answer: Maintaining the Rheem RTEX-13 is relatively straightforward. Regularly inspect and clean the filter to prevent mineral buildup, which can affect performance. Additionally, descaling the unit every few months is recommended in areas with hard water to maintain efficiency and prolong its lifespan. This simple upkeep ensures that the heater continues to operate optimally, providing reliable hot water whenever needed. -
Question:
How does the Rheem RTEX-13 compare to traditional tank water heaters?
Answer: The Rheem RTEX-13 tankless model offers significant advantages over traditional tank water heaters, primarily in energy efficiency and space savings. Unlike tank models that continuously heat water, the RTEX-13 heats water on demand, reducing energy consumption. Additionally, its compact design makes it ideal for small homes or apartments, allowing for more flexible installation options. This means homeowners can enjoy continuous hot water while also saving on monthly energy bills. -
Question:
Where can I buy the Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater in Equatorial Guinea?
Answer: You can purchase the Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater through Ubuy in Equatorial Guinea. Ubuy provides a reliable online shopping experience, offering the product along with detailed specifications and customer reviews to assist in your buying decision. With a focus on customer service and product availability, Ubuy is a great place to find this efficient tankless water heater.
Rheem Water Heaters RTEX-13 Editorial Review
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY offers a remarkable solution for unlimited hot water needs. This efficient 13kw unit promotes energy savings with its on-demand heating feature, making it ideal for various household demands. Many users highlight its compact design, which facilitates effortless installation in tight spaces, proving its versatility. The unit's digital temperature display allows for user-friendly adjustments, ensuring satisfaction across different preferences. While some users have noted maintenance concerns, overall feedback reveals a reliable performance with minimal fluctuations in temperature during peak usage times, showcasing how it can significantly enhance your home’s hot water system.
Customer Reviews & Ratings
1408 customers ratings
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5 Star
74%
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4 Star
11%
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3 Star
4%
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2 Star
3%
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1 Star
8%
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Pros
- Endless supply of hot water for high demand
- Energy-efficient on-demand heating system
- Compact design suitable for tight spaces
- User-friendly digital controls for easy adjustments
- Reliable performance with consistent temperature flow
Cons
- Requires occasional maintenance to flush out buildup
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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Important information
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XAF 224497
Order now and get it around Wednesday, September 30
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
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Fastest cross-border delivery
Features & Benefits
- External adjustable digital thermostatic control with LED display
- Durable Copper immersion two heating elements
- 99.8% energy efficient
- Water-Saver Shower Head – 1.5 GPM
- Threaded for easy replacement, simple installation, digital temperature display
- Flow rate up to 3.17 GPM
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