The RTE13 Electric Water Heater is your go-to choice for energy efficiency, providing instant hot water with a remarkable energy efficiency rating of 99.8%. This compact, tankless model can cut your electricity bills by up to 30%, making it a smart investment. Installation is quick and easy, fitting into tight spaces without hassle. You’ll enjoy precise temperature control and continuous hot water on demand. Discover the specifics that make this heater an excellent option for your home.
Overview of the RTE13 Electric Water Heater
When you’re looking for an efficient and space-saving solution for hot water needs, the Rheem RTE 13 electric tankless water heater stands out.
This compact unit provides on-demand hot water with a maximum flow rate of 4.0 gallons per minute, ensuring you never run out during peak usage. Operating at 240/208V, it boasts an impressive energy efficiency rating of 99.8%, potentially saving you up to 30% on electricity bills.
With external digital controls for precise temperature adjustments from 80°F to 140°F, you can easily customize your hot water experience. Thanks to its small dimensions, it fits seamlessly into tight spaces.
Backed by Rheem Manufacturing Company’s warranty, this electric water heater is a reliable choice for modern living. Additionally, using an energy-efficient appliance like this can significantly contribute to reducing overall household energy consumption.
Key Features and Benefits
The Rheem RTE 13 electric tankless water heater is packed with key features that deliver both efficiency and convenience for homeowners.
The Rheem RTE 13 electric tankless water heater combines efficiency and convenience, making it an ideal choice for homeowners.
Here’s what makes it stand out:
- Energy Efficient: Boasts a 99.8% energy efficiency rating, saving you up to 30% on electricity bills compared to traditional models.
- Precise Temperature Control: External digital controls allow you to set temperatures in 1°F increments, ranging from 80°F to 140°F.
- Compact Design: Its small dimensions (12-5/8” H x 8-1/4” W x 3-5/8” D) make it perfect for tight spaces, such as under sinks.
- Instant Hot Water: With a maximum flow rate of 4.0 GPM, it provides hot water on demand, eliminating wait times.
Additionally, investing in such energy-efficient appliances can contribute to achieving long-term financial goals by reducing utility expenses over time.
These features position the RTE 13 as a standout in tankless water heaters.
Energy Efficiency and Cost Savings

Investing in the Rheem RTEX-13 electric tankless water heater not only enhances your home’s hot water supply but also greatly boosts energy efficiency and lowers utility costs.
With an impressive 99.8% energy efficiency rating, this model considerably reduces energy waste compared to traditional electric water heaters. By utilizing on-demand heating, you can save up to 30% on electricity bills, eliminating the need to constantly heat stored water.
Since water heating accounts for 18% of your home’s energy use, switching to the RHEEM RTEX is a smart choice for energy savings. Its compact design guarantees continuous hot water without the costs of preheating large volumes, leading to potential savings of up to 26% with tankless water heating. Additionally, effective management of spending through energy-efficient choices can contribute to long-term financial stability.
Installation Process and Requirements
Upgrading to the Rheem RTEX-13 electric water heater not only improves energy efficiency but also simplifies your installation process.
Upgrading to the Rheem RTEX-13 enhances energy efficiency while streamlining your installation experience.
You’ll appreciate its lightweight design and compact dimensions, allowing for versatile placement. Here’s what you need to know for a smooth installation:
- Confirm you have a 240V power source with a dedicated 60A breaker.
- Choose a suitable location—walls, under sinks, or closets all work well.
- Connect the water using the standard 1/2 NPT fitting for compatibility.
- Follow the provided instructions; installation can typically be completed in under an hour with minimal tools.
With these straightforward requirements, you’ll have hot water ready in no time, enhancing your home’s efficiency and convenience. Additionally, consider using expense management apps to streamline financial organization and tracking for home improvement projects.
Maintenance Tips for Longevity

To secure your Rheem RTEX-13 electric water heater operates efficiently over the years, regular maintenance is vital.
Start by periodically flushing the unit to remove mineral buildup, which can hinder performance.
Regularly check the heating elements and temperature sensors; this proactive approach helps avoid potential issues and guarantees a consistent hot water supply.
Proper grounding during installation is essential for safety and minimizes the risk of electrical faults.
Fortunately, the RTEX-13 requires minimal maintenance compared to traditional models, making upkeep simple and less time-consuming.
By following the manufacturer’s guidelines, you can extend the unit’s lifespan and improve energy efficiency. Additionally, utilizing expense tracking tools can help you manage the costs associated with maintenance and repairs effectively.
Implement these maintenance tips to enjoy reliable hot water and peace of mind for years to come.
Comparison With Other Tankless Models
When comparing the Rheem RTEX-13 to other tankless models, you’ll notice its impressive flow rate of 4.8 GPM, ideal for single shower use, while higher models cater to larger households.
Its energy efficiency rating of 99.8% sets a standard that surpasses many traditional options, saving you more on utility bills.
Additionally, the RTEX-13’s simple electric installation makes it a hassle-free choice, unlike gas models that require venting. Moreover, using price comparison tools can help you find the best deals on tankless water heaters, ensuring you maximize your savings.
Performance and Flow Rate
The Rheem RTEX-13 stands out among tankless electric water heaters with its impressive maximum flow rate of 4.0 GPM, making it an excellent choice for small households and single shower applications.
When comparing performance and flow rate with other models, consider the following:
- RTEX-11: Offers a maximum flow rate of 3.5 GPM, suitable for lighter usage.
- RTEX-18: Provides a higher flow rate of 4.5 GPM for greater hot water demands.
- Energy Efficiency: All models operate at 240V and utilize self-modulating technology.
- Continuous Supply: The RTEX-13 maintains uninterrupted hot water, even during simultaneous use.
With its robust flow rate and energy efficiency, the RTEX-13 is a reliable hot water heater that meets the needs of modern households effectively.
Energy Efficiency Comparison
While the Rheem RTEX-13 impresses with its flow rate and performance, it truly excels in energy efficiency, making it a standout choice among electric tankless water heaters.
With an impressive energy efficiency rating of 99.8%, the RTEX-13 greatly outperforms traditional tank water heaters, which typically range from 60-70%.
When compared to models like the RTEX-06T and RTEX-08, the RTEX-13’s 13kW output guarantees you enjoy endless hot water for multiple uses simultaneously.
Its self-modulating technology further enhances efficiency by adjusting energy usage based on real-time demands, reducing waste.
Homeowners can save up to 30% on electricity bills, making the RTEX-13 a smart investment for those seeking both performance and energy savings in their tankless electric water heater.
Installation and Maintenance Ease
Installing and maintaining the Rheem RTEX-13 tankless electric water heater is a breeze compared to bulkier models. Here’s why you’ll appreciate it:
- Lightweight Design: At just 8.5 pounds, you’ll find it easy to handle during installation.
- Quick Setup: The detailed manual allows professionals to complete installation in under an hour.
- Compact Size: Its dimensions (12-5/8” H x 8-1/4” W x 3-5/8” D) enable wall mounting in tight spaces.
- Low Maintenance: Only periodic flushing and routine checks of heating elements are needed.
Thanks to its self-modulating technology, the RTEX-13 optimizes energy use, making it both efficient and easy to operate.
You’ll benefit from a hassle-free experience with this tankless electric solution.
User Experiences and Testimonials
How have users responded to the Rheem RTEX-13 electric water heater? Many customers rave about its impressive energy efficiency, noting savings of up to 30% on electricity bills compared to traditional tank water heaters.
The 99.8% energy efficiency rating is a game-changer. Users also appreciate the precise temperature control, allowing adjustments in 1°F increments for the perfect hot water experience.
The convenience of on-demand hot water means no more waiting around, which enhances daily routines. Additionally, the compact design fits seamlessly into small spaces, like under sinks or in closets.
Installation is a breeze, with many reporting they set it up in under an hour using minimal tools. Overall, the Rheem tankless water heater has transformed users’ hot water experience.
Moreover, the combination of savings and investments can further enhance financial management by allowing users to allocate resources effectively.
Additional Resources and Support

Rheem offers a wealth of resources and support to guarantee you get the most out of your RTEX-13 electric water heater. Here’s how you can make informed decisions:
Rheem provides extensive resources to help you maximize your RTEX-13 electric water heater experience.
- FAQs: Find answers about installation and maintenance for tankless water heaters.
- Spec Sheets: Download detailed product info and technical specs to understand your heater’s capabilities.
- Buying Guide: Get assistance in selecting the best energy-efficient tankless water heater to meet your water supply needs.
- Brochures and Manuals: Access essential documents to ensure ideal use and care of your heater.
With Rheem’s century-long commitment to innovation, don’t hesitate to consult a professional plumber for expert advice tailored to your specific situation. Additionally, consider utilizing budgeting apps to help manage your financial investment in energy-efficient appliances.
Conclusion
To sum up, the RTE13 Electric Water Heater stands out as a powerhouse of efficiency and convenience for any home. By choosing this model, you’re not just saving energy and money; you’re investing in a future where hot water flows like a river at your command. With its user-friendly installation and low maintenance needs, you’ll find that comfort and savings go hand in hand. Don’t miss out on the incredible benefits this heater has to offer—make the switch today!