Imagine stepping into a refreshing shower, only to be met with a blast of cold water because your tank heater ran out. This frustration is common with traditional water heaters that store a limited supply of hot water. Electric tankless water heaters offer an innovative solution by providing an endless supply of hot water, heating it on demand. This means no more cold showers or waiting for the tank to refill.
A great electric tankless water heater combines energy efficiency, compact design, and user-friendly features. It should meet your household’s hot water demands without significant energy costs. With various options available, finding the right one can be overwhelming, especially when considering installation requirements and flow rates.
In this roundup, we will review four of the best electric tankless water heaters on the market. Each product offers unique benefits, from high flow rates to compact designs, ensuring you find the perfect fit for your needs.
Here’s a quick comparison of their key specifications:
| Features | VEVOR Tankless Water Heater | 18kW Tankless Water Heater | Rheem RTEX-24 24kW | Rheem 18kW Tankless |
|---|---|---|---|---|
| Material & Build | Die-Cast Aluminum | Compact Design | Durable Copper | Durable Copper |
| Key Specification | 36kW, 240V | 18kW, 240V | 24kW, 240V | 18kW, 240V |
| Main Feature | LCD Touch Screen | 3s Instant Heating | Digital Control | Self-Modulation |
| Performance | 30-60°C Output | Max 4.9 GPM | 5.9 GPM | 4.4 GPM |
| Best Use Case | Multi-Location Use | Medium Homes | Multiple Fixtures | Small Homes |
VEVOR Tankless Water Heat…
VEVOR
VEVOR Tankless Water Heater Electric, 36KW 240V Black Instant Water Heater, LCD Touch Screen, Digital Temperature Display, Child Security Lock, On Demand for Bathroom, Kitchen, Shower, Mall, Salon
- Die-Cast Aluminum Heating: The water and electricity are separated, with no water tank, avoiding the buildup of scale and reducing…
- Applicable Regions: You can choose the ideal tankless water heater based on your location. Our hot water heaters feature constant…
- With Security Lock: The tankless electric water heater comes with a security lock that can be triggered with a long press. The tou…
The VEVOR Tankless Water Heater is a powerful 36kW unit designed for both residential and commercial use. It’s ideal for those who need a reliable hot water source for multiple applications, from showers to kitchen use. This model stands out for its ability to deliver water at a temperature range of 30-60°C (86-140°F) almost instantaneously.
One of the most impressive features is the advanced die-cast aluminum heating element, which separates water and electricity, significantly reducing the risk of electric leakage. Users appreciate the LCD touch screen that provides real-time temperature monitoring, making it easy to operate even for elderly users. Additionally, the security lock feature adds an extra layer of safety, preventing accidental adjustments.
However, installation can be somewhat complex, requiring specific electrical components like 4x40A circuit breakers. This may necessitate professional assistance, adding to the initial costs. Some users might also find it a bit bulky compared to other models.
- Power: 36kW, 240V
- Flow Rate: Up to 5.6 GPM
- Temperature Range: 30-60°C
- Material: Die-Cast Aluminum
- Security Lock: Yes
Best for: Users needing high capacity for commercial and residential applications.
18kW Tankless Water Heate…
NOVIEEX
18kW Tankless Water Heater Electric, NOVIEEX 240V 3s Instant Hot Water Heater, Flow Rate Max 4.9 GPM, Supply for 2-3 Points, Indoor Installation, Ideal for Apartment, Garage, Salon, Bathroom, Kitchen
- 【HIGH-POWER 18kW PERFORMANCE】 Built for demanding hot water needs, this 18kW tankless water heater delivers high-power heating per…
- 【MEDIUM HOME SOLUTION】 The NOVIEEX 18kW electric tankless water heater is specifically engineered for small-to-medium-sized homes,…
- 【HIGH CAPACITY FLOW】 It delivers a powerful water flow rate of up to 4.9 Gallons Per Minute (GPM). This high capacity easily accom…
The NOVIEEX 18kW Tankless Water Heater is an efficient choice for small to medium homes. With a maximum flow rate of 4.9 GPM, it can easily cater to 2-3 simultaneous water demands, making it perfect for households with multiple users. Its sleek, compact design allows for flexible installation in tight spaces like basements or garages.
This unit operates at a remarkable 99.8% thermal efficiency, meaning it heats water only when needed, significantly cutting down on energy costs. The anti-scald constant temperature feature ensures safety, preventing sudden temperature fluctuations that could lead to discomfort or burns. The user-friendly LED display is another highlight, allowing precise temperature adjustments in 1°F increments.
On the downside, it requires specific electrical setups, including two 40A double-pole circuit breakers. This can be a hurdle for some homeowners who might not have the necessary infrastructure in place. Installation complexity can vary, and some users may need professional help.
- Power: 18kW, 240V
- Flow Rate: 4.9 GPM
- Temperature Range: 77°F to 140°F
- Efficiency: 99.8%
- Installation: Indoor only
Best for: Small to medium homes requiring efficient, on-demand hot water.
Rheem RTEX-24 24kW 240V E…
Rheem
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
- Get the performance you expect. Choose the right size water heater for your home and verify electrical requirements before install…
- 24kW model provides up to 5.9 GPM
- Multiple fixture applicatons
The Rheem RTEX-24 is an excellent option for larger households needing a robust hot water supply. With a capacity of up to 5.9 GPM, this unit can accommodate multiple fixtures running simultaneously, which is essential for busy families. Its user-friendly design includes digital thermostatic temperature controls, allowing adjustments in 1-degree increments.
What sets this model apart is its self-modulating technology, which adjusts power based on water demand. This feature promotes energy savings while ensuring you always have hot water available. The durable copper heating elements are another plus, known for their longevity and effectiveness in heating water quickly.
While the performance is impressive, proper installation is crucial. It requires three 40-amp double-pole breakers and a significant electrical load capacity. Homeowners may need to consult with an electrician to confirm that their systems can handle the power requirements.
- Power: 24kW, 240V
- Flow Rate: Up to 5.9 GPM
- Temperature Range: 80°F to 140°F
- Heating Elements: Copper
- Self-Modulating: Yes
Best for: Larger families needing reliable hot water for multiple fixtures.
Rheem 18kW 240V Tankless…
Rheem
Rheem 18kW 240V Tankless Electric Water Heater, Gray
- External digital thermostatic control with LED display (+/1 degree accuracy)
- Most advanced self-modulation, adjust power to meet hot water demand
- Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
The Rheem 18kW Tankless Water Heater is another solid option from a reputable brand. Ideal for smaller homes or apartments, this model provides a flow rate of up to 4.4 GPM, which is sufficient for several fixtures running at once. It includes an external digital thermostatic control with an LED display for easy temperature monitoring.
This unit’s self-modulating technology is particularly beneficial, as it adjusts energy usage based on current hot water demands, which enhances energy efficiency. The durable construction, featuring copper immersion heating elements, ensures longevity and reliable performance.
One potential drawback is its lower maximum flow rate compared to the RTEX-24, which might not suffice for larger households during peak usage times. The installation process can also be tricky for those without electrical experience, necessitating professional assistance.
- Power: 18kW, 240V
- Flow Rate: 4.4 GPM
- Temperature Range: 80°F to 140°F
- Heating Elements: Copper
- Self-Modulating: Yes
Best for: Smaller homes or apartments needing efficient hot water.
How We Chose These Products
Our selection of electric tankless water heaters is based on several criteria, including efficiency, performance, and user-friendliness. We analyzed each product’s flow rate, temperature control features, and build quality. Additionally, we considered user reviews and testimonials to gauge real-world performance and reliability.
Cost of ownership was another significant factor. We evaluated installation requirements and long-term energy efficiency to help readers make informed choices. Our goal is to provide a comprehensive overview to ensure you select a heater that meets your specific needs.
Buying Guide: What Really Matters
When shopping for an electric tankless water heater, consider the flow rate, which determines how many fixtures can run simultaneously without losing hot water. A higher flow rate is preferable for larger households. Next, check the energy efficiency rating, as this impacts your long-term utility costs.
Installation requirements are crucial. Some units require complex electrical setups, which may necessitate hiring a professional. Additionally, assess the warranty and customer support offered by the manufacturer, as these factors can save you money and hassle in the long run.
Our Top Recommendation
The Rheem RTEX-24 is our top recommendation for its balance between capacity and efficiency. It’s perfect for larger households needing reliable hot water for multiple fixtures. For those on a budget or with smaller needs, the Rheem 18kW is a solid alternative, offering excellent performance in a compact design.
Frequently Asked Questions
What is the average lifespan of an electric tankless water heater? Most electric tankless water heaters last between 15 to 20 years with proper maintenance.
Can I install a tankless water heater myself? Installation can be complex due to electrical requirements, so it’s recommended to hire a qualified electrician.
How do tankless water heaters save energy? They heat water on demand, which eliminates standby heat loss associated with traditional tank heaters.
Are there any maintenance requirements? Regular maintenance includes descaling and checking the heating elements for wear to ensure optimal performance.
