The best tankless water heater, the Rheem 8kW 240V Tankless Electric Water Heater, is a highly rated product for $238.75. With an average rating of 4.1 out of 5 stars based on 257 reviews, this water heater offers several features, including an ON/OFF Dial Control, adjustable digital temperature display, and self-modulating power control. It provides continuous hot water with a flow rate of up to 1.95 GPM. This review will explore some of the experiences shared by customers who have used this product.
One customer shared that they installed a ball valve cut-off on the inlet and were pleased with the decision. They mentioned that if the sink or shower has a decent amount of flow, it is necessary to use a valve on the incoming or outgoing side to slow the flow. They also advised checking the thread size and mentioned the presence of a rubber washer inside the plastic caps that come with the unit. This customer found the water heater to work well but highlighted the importance of understanding its limitations based on the incoming water temperature and the need to slow down the flow for more significant usage scenarios.
Another customer pointed out an issue with the specified thread size, stating that the unit has 5/8″ compression fittings instead of the 1/2″ compression fittings mentioned in the documentation. They advised using 1/2″ FIP connectors instead. Despite this issue, the customer found the water heater to work well once installed and recommended understanding the unit’s ratings and capabilities, especially when handling showers or more considerable water demands.
Flow Control and Installation Tips
Flow control is essential when installing the best tankless water heater, Rheem 8kW 240V Tankless Electric Water Heater. Some users have found that the heater may not provide sufficient hot water flow if the incoming flow is too high. To address this, installing a ball valve cut off on the inlet side is recommended to regulate the flow. Adjusting the valve can slow down the flow and ensure optimal heater performance.
Additionally, it is crucial to pay attention to the thread size during installation. Some users have reported that the documentation provided by Rheem incorrectly specifies 1/2″ compression fittings when the heater has 5/8″ compression fittings. It is essential to use the correct adapters, which convert to 1/2″ NPT, to ensure a proper and leak-free connection. The manual does not mention these details, so it’s essential to know this for a smooth installation process.
Heating Capacity and Flow Restriction
Providing on-demand, continuous hot water is the primary purpose of the Rheem 8kW 240V Tankless Electric Water Heater. However, it is essential to note that this model has an 8kW heating capacity, which may not be sufficient for high-demand situations such as showering. The best tankless water heater flow rate can reach up to 1.95 GPM, but limiting the flow to 1 GPM or less is recommended for optimal performance.
If you plan to use this heater for a shower or any other more prominent water outlet, it is crucial to slow down the flow to ensure adequate heat supply. Installing a flow control mechanism, such as a flow limiter or adjusting the output valve, can help regulate the water flow and prevent any issues with insufficient hot water.
best tankless water heater: Versatile Usage and Longevity
The versatility and reliability of the best tankless water heater, Rheem 8kW 240V Tankless Electric Water Heater, have been praised by many users for various applications. It can be used in a small studio apartment, a shop, or even to replace standard home water heaters. The self-modulating power control allows for efficient energy usage, helping to save on electricity bills. Some users have reported using this heater to heat hot tubs or as a whole-house water heater in smaller properties.
Understanding the unit’s limitations is essential, as an 8kW heater may not be sufficient for more extensive showers or high-demand scenarios. However, when used within its capacity, this heater has proven durable and long-lasting, with some users reporting over six years of reliable performance.
best tankless water heater: Portable Usage Considerations
When considering using the Rheem 8kW 240V Tankless Electric Water Heater for portable applications like outdoor showers, power requirements should be considered. This unit requires a substantial power cord, such as a 50A RV/Welder cable, to operate at total capacity. Using a dedicated sub-panel with appropriate breakers for larger units is recommended. For portable scenarios, ensuring that you have the necessary power supply and wiring capabilities to accommodate the heater’s electricity demand is crucial. This will help prevent any issues with insufficient power and ensure optimal performance.
Easy Installation and Positive Feedback
The installation process of the Rheem 8kW 240V Tankless Electric Water Heater has been reported as relatively easy by users. With proper electrical and plumbing knowledge, installation can be straightforward. The unit’s compact size allows for flexibility in placement, making it suitable for various installation scenarios. Overall, the feedback for this product has been positive, with users praising its performance and efficiency. However, it is essential to note that individual experiences may vary based on factors such as flow rate, incoming water temperature, and usage patterns. It is always recommended to consult the product manual and seek professional assistance during installation.
best tankless water heater: Conclusion
The Rheem 8kW 240V Tankless Electric Water Heater offers a convenient and efficient solution for on-demand hot water. This unit can provide continuous hot water for various applications with proper installation, flow control, and understanding of its heating capacity. Whether for a small studio apartment, a shop, or as a replacement for standard water heaters, the Rheem 8kW 240V Tankless Electric Water Heater is a reliable choice for many users.
- ON/OFF Dial Control with adjustable digital temperature display – This feature allows for easy water temperature control, making it convenient and customizable for the user.
- Self-modulating power control – The self-modulating power control ensures that the water heater operates efficiently by adjusting the power output based on the demand, resulting in energy savings.
- Continuous hot water on demand – With this tankless electric water heater, you can enjoy endless hot water whenever you need it without needing a storage tank, providing convenience and eliminating the risk of running out of hot water.
- Installation may require additional components – Some users have reported needing other valves or adapters to ensure a proper structure, which can add to the overall cost and complexity.
- Limited flow rate – The 8kW model has a flow rate of up to 1.95 GPM, which may not be sufficient for larger applications such as showers or multiple water outlets running simultaneously.
- Inconsistent ratings – While the product rating is 4.1 out of 5, there are mixed reviews, and some customers have reported issues with the functionality and performance of the water heater.
Overall, the Rheem 8kW 240V Tankless Electric Water Heater has received mixed customer reviews. While some have experienced positive outcomes with proper installation and management of water flow, others have faced challenges with thread sizes and limitations in heating capacity. It is essential to consider individual needs and usage scenarios when deciding if this water heater is right.
Questions & Answers:
Question: Can this water heater handle a shower?
Answer: The 8kW model may not be sufficient to handle a shower, especially if other water outlets are running simultaneously. It is recommended to consider a larger unit for shower applications.
Question: Do I need any additional components for installation?
Answer: Some users have reported needing additional valves or adapters for proper installation. It is advisable to check the product specifications and consult a professional to ensure a smooth installation process.
Question: Is the temperature control easy to use?
Answer: Yes, the ON/OFF Dial Control with an adjustable digital temperature display makes it easy to control and customize the water temperature according to your preference.