Updated At
Price: $388
Customer Rating:
Manufacturer: Rheem
Rheem Water Heater Review – Detailed Overview | ||
|---|---|---|
Dimensions | Flow Rate | Power Source |
| 14.5″W x 18.25″H | Up to 4.4 GPM | 240V AC Power |
Temperature Control | Installation | Warranty |
| External Digital Control | Easy DIY or Professional | Manufacturer Warranty |
Heating Technology | Energy Efficiency | Weight |
| Advanced Self-Modulation | Up to 50% Savings | 14.8 lbs |
Best For | Material | Color |
| Small to Mid-Size Homes | Stainless Steel | Silver |
Pros
Cons
| ||
Rheem Water Heater Review: Instant Hot Water Solution
Reliable hot water is a must for any home, but finding an efficient and hassle-free way to heat it can make all the difference. Tankless water heaters are becoming the go-to choice for their ability to provide continuous hot water while saving on space and energy.
The Rheem 18kW 240V Tankless Electric Water Heater offers an innovative solution to heating water quickly and efficiently. It’s perfect for those looking to upgrade their home system for better performance, energy savings, and modern convenience. In this review, I’ll explore its features, benefits, and whether it’s the right choice for your home.
Product Details – Rheem Water Heater
- Dimensions: 14.5″W x 18.25″H
- Wattage: 18,000 watts
- Capacity: 18 gallons
- Flow Rate: Up to 4.4 GPM (Gallons Per Minute)
- Power Source: 240V AC Power
- Material: Stainless Steel
- Mounting Type: Wall-mounted
- Weight: 14.8 pounds
- Connections: Bottom 3/4 inch NPT water connections
- Special Features: LED Display, External Digital Thermostatic Control, Advanced Self-Modulation, No Venting Required
✅ Best For: Homeowners seeking energy-efficient, instant hot water with space-saving design.
Rheem Water Heater Review – Pros & Cons
Pros of Rheem Water Heater
✅ Energy Efficient: Uses power only when needed, cutting heating costs significantly.
✅ Space-Saving Design: Compact size fits easily under sinks or in small spaces.
✅ Consistent Hot Water Flow: Provides up to 4.4 GPM, enough for multiple fixtures.
✅ Easy Installation: Threaded connections make installation simple for DIY enthusiasts or professionals.
✅ Digital Thermostatic Control: LED display ensures accurate temperature settings within 1 degree.
Cons of Rheem Water Heater
❗ High Power Requirement: Requires two 40-amp circuit breakers, which may need an electrical panel upgrade.
The Rheem Water Heater has received mostly positive reviews for its energy efficiency, compact design, and reliable performance. Users appreciate its easy installation and the convenience of endless hot water on demand.
In-Depth Review of the Rheem Water Heater
Endless Hot Water on Demand
The Rheem 18kW Tankless Electric Water Heater delivers a continuous stream of hot water, perfect for homes that need efficient heating without waiting. Its tankless design means water is heated as it flows through the unit, providing instant hot water without needing to maintain a full tank.
Efficient Energy Usage
Rheem’s self-modulating technology adjusts the power usage according to hot water demand, making it highly efficient. Compared to traditional tank heaters, this unit can save up to 50% on water heating costs. This makes it both a cost-effective and environmentally friendly choice, as it only uses energy when hot water is in use.
Compact & Space-Saving Design
At only 14.5 inches wide and 18.25 inches tall, this unit’s compact size is a major plus. Wall-mounted and sleek, it fits easily into tight spaces like under sinks or closets, freeing up valuable storage areas that traditional water heaters consume. This is ideal for those looking to maximize space without sacrificing functionality.
Easy Installation and Maintenance
The Rheem tankless heater is designed for straightforward installation with threaded water connections and digital temperature display for easy adjustments. While it does require dual 40-amp breakers and proper wiring, users with basic plumbing and electrical knowledge have found the installation manageable. Routine maintenance is a breeze, thanks to the durable copper heating elements that are field serviceable.
Superior Temperature Control
The digital thermostatic control provides precise temperature settings, accurate within 1 degree. This means you can tailor the hot water temperature to your needs, providing comfort and consistency for activities like showers, dishwashing, and laundry.
Powerful Heating Performance
This unit boasts a maximum flow rate of 4.4 GPM, which is sufficient for running multiple showers or sinks simultaneously in smaller households. The powerful 18kW heating elements ensure that water is heated quickly and reliably, offering a constant stream of hot water for everyday needs.
Drawbacks of the Rheem Water Heater
While the Rheem water heater has many advantages, its higher power requirement might be a drawback for some. The unit needs two 40-amp circuit breakers, and not all electrical panels may have the capacity to handle this load. Therefore, an electrical upgrade might be necessary, adding to the installation cost.
Who Is the Rheem Water Heater Perfect For?
✅ Small to Mid-Size Homes: Ideal for homes with up to 2 bathrooms where simultaneous hot water use is needed.
✅ Energy-Conscious Homeowners: Perfect for those looking to reduce energy bills and environmental impact.
✅ DIY Enthusiasts: Straightforward installation makes it great for those comfortable with plumbing and electrical work.
✅ Space-Saving Seekers: Fits well in smaller spaces, maximizing storage areas.
Who Might Not Prefer the Rheem Water Heater?
✅ Homes with Low Electrical Capacity: Those without sufficient breaker space or outdated panels might find it challenging to accommodate the 80-amp requirement.
Customer Experiences – Rheem Water Heater
We have thoroughly researched customer feedback on the Rheem 18kW Water Heater, and here’s what users had to say:
✅ Efficient Heating & Space-Saving: Users love the tankless design that provides instant hot water without taking up much space. The compact build frees up closet areas previously occupied by bulky tanks.
✅ Smooth Performance for Multiple Fixtures: Many users have found that the water heater can handle simultaneous use across showers, sinks, and appliances with little to no fluctuation in temperature.
🚫 Requires Adequate Electrical Supply: Some users faced challenges with electrical requirements, as older homes might need a panel upgrade to support the dual 40-amp breakers.
✅ Simple Installation for the Handy User: Most users have successfully installed the unit themselves, with clear instructions and manageable connections, provided they have some electrical and plumbing experience.
🚫 Occasional Flicker in LED Lights: A few users reported flickering lights when the unit kicks in, indicating high power draw. However, this did not affect performance.
Value Analysis – Rheem Water Heater
Cost Efficiency and Energy Savings
The Rheem 18kW Tankless Water Heater is a solid investment for those aiming to cut down their energy costs. By heating water only when needed, the unit reduces power consumption compared to traditional tank heaters, which constantly maintain a set water temperature. The advanced self-modulation feature ensures that energy is used efficiently based on the demand, making it an economical choice in the long run.
Reliable Hot Water Flow
With up to 4.4 GPM, the Rheem water heater easily meets the demands of small to mid-sized households. The ability to support simultaneous hot water usage in multiple areas makes it perfect for families or homes with varying needs throughout the day.
Key Strengths
- Durable Build: The stainless steel material and copper heating elements are designed for longevity and easy maintenance.
- Precise Control: External thermostatic control allows for accurate temperature adjustments, enhancing user comfort.
- No Venting Required: Being an electric unit, it eliminates the need for gas venting, simplifying installation in various parts of the house.
Considerations
- Electrical Panel Requirements: Homes lacking sufficient electrical capacity may need a panel upgrade, which could increase the initial cost.
- Initial Learning Curve: While installation is straightforward for those with experience, newcomers might need professional assistance to ensure everything is connected properly.
The Rheem Water Heater is a good investment for those looking for a durable, energy-efficient water heating solution with instant hot water delivery and easy installation.
Final Thoughts: Is the Rheem Water Heater Worth It?
The Rheem Water Heater is a reliable, energy-efficient option for those needing consistent hot water without the bulk of traditional tanks. While its power requirements may necessitate an electrical upgrade, the benefits of space-saving design and efficient heating make it an excellent choice for many homeowners.
FAQs – Rheem Water Heater Review
What is the power requirement for the Rheem Water Heater?
The Rheem 18kW water heater requires two 40-amp circuit breakers and uses 240V AC power. Homes must have adequate electrical capacity to support this unit.
How much space does the Rheem Water Heater save?
The compact design of the Rheem water heater is 90% smaller than traditional tank heaters, making it ideal for installation in closets, under sinks, or other small spaces.
Is installation difficult for the Rheem Water Heater?
Installation is straightforward for those familiar with plumbing and electrical work. However, due to the power requirements, some users might need professional installation to ensure safety and code compliance.
Can the Rheem Water Heater support multiple fixtures at once?
Yes, the Rheem water heater provides a flow rate of up to 4.4 GPM, enough to support simultaneous use of multiple fixtures, like showers and sinks, in small to mid-sized homes.
How does the digital temperature control work?
The external digital thermostatic control allows users to set precise water temperatures within 1-degree accuracy, providing consistent hot water as needed.
Is the Rheem Water Heater energy-efficient?
Yes, the tankless design heats water only when required, significantly reducing energy consumption compared to traditional tank heaters and helping to lower energy bills.
Does the Rheem Water Heater require venting?
No, the Rheem tankless electric water heater does not require any venting, making it suitable for indoor installations without additional ventilation requirements.
Can the Rheem Water Heater be used in cold climates?
Yes, the Rheem water heater is designed to function well in various climates. However, in areas with very cold inlet water temperatures, the unit may provide a lower flow rate.
Does the Rheem Water Heater come with a warranty?
Yes, the Rheem water heater comes with a manufacturer’s warranty. It’s advisable to check specific warranty details directly from Rheem for the most accurate information.
Is the Rheem Water Heater compatible with solar water heating systems?
While primarily designed as a standalone unit, it may be possible to integrate the Rheem water heater with a solar heating system. However, professional consultation is recommended for proper compatibility.
Rheem Water Heater Review – Conclusion
The Rheem Water Heater delivers efficient, on-demand hot water with a space-saving design. Perfect for small to mid-sized homes, its advanced self-modulating technology ensures you get hot water without skyrocketing your energy bills. Easy to install and maintain, it’s an excellent choice for those looking to upgrade their water heating system.
While its power requirements might pose a challenge for homes with outdated electrical panels, the Rheem water heater stands out for its reliability and convenience, making it a solid investment for the right household.