The Ultimate Guide to 120 Volt Tankless Water Heaters
As the demand for energy-efficient and space-saving appliances grows, 120 volt tankless water heaters have emerged as a popular choice for homeowners looking to enjoy hot water on demand. Unlike traditional water heaters that store hot water in a tank, tankless models heat water directly as it flows through the unit. This not only saves space but also reduces energy costs by avoiding standby heat loss.
In this comprehensive guide, we will explore the best 120 volt tankless water heaters available on the market, their applications, features, and benefits. We will also provide comparisons that can help you make an informed decision. Let’s dive in!
Comparison of 120 Volt Tankless Water Heaters
| Model Name | Power (kW) | Flow Rate (GPM) | Type | Application | Price Range |
|---|---|---|---|---|---|
| Stiebel Eltron Mini 2 | 1.8 | 0.32 | Point of Use | Sinks, Showers | $200 – $300 |
| Eemax EEM12004 | 3.5 | 0.9 | Point of Use | Sinks, Small Appliances | $150 – $250 |
| Atmor 800 | 3.5 | 0.5 | Point of Use | Sinks, Showers | $120 – $180 |
| Rheem RTEX-13 | 3.5 | 4.0 | Whole House | Homes with Moderate Demand | $250 – $400 |
| EcoSmart ECO 11 | 3.5 | 2.0 | Whole House | Homes with Low Demand | $200 – $300 |
What is a 120 Volt Tankless Water Heater?
A 120 volt tankless water heater is an electric water heating unit designed to provide hot water on demand without the need for a storage tank. It operates by heating water directly as it flows through the device, making it an energy-efficient option for residential and small commercial applications.
Benefits of 120 Volt Tankless Water Heaters
- Energy Efficiency: Unlike traditional water heaters, tankless systems only heat water as needed, reducing energy consumption and costs.
- Space Saving: Compact design allows for installation in small spaces, such as under sinks or in cabinets.
- Endless Hot Water: Provides a continuous supply of hot water, ideal for homes with high hot water demand.
- Longer Lifespan: Generally lasts longer than conventional tank heaters due to reduced wear and tear.
- Environmentally Friendly: Lower energy use translates to reduced carbon footprint.
Key Features to Consider
When selecting a 120 volt tankless water heater, consider the following features:
Flow Rate
Measured in gallons per minute (GPM), flow rate indicates how much hot water the heater can provide at any given time. For example, if you need to run a shower and a sink simultaneously, ensure the combined flow rate does not exceed the heater’s capacity.
Power Rating
The power (in kilowatts) determines how quickly the heater can raise the temperature of incoming water. Higher power ratings typically result in faster heating but may require more electrical capacity.
Energy Efficiency Rating
Look for models that possess a high energy efficiency rating, such as Energy Star, to ensure lower operational costs.
Installation Requirements
Assess your home’s electrical system to ensure compatibility with the heater’s requirements. Some units may need a dedicated circuit or upgraded wiring.
Popular Models Reviewed
Stiebel Eltron Mini 2
The Stiebel Eltron Mini 2 is a compact and highly efficient point-of-use water heater that provides hot water directly at the source.
- Power: 1.8 kW
- Flow Rate: 0.32 GPM
- Best For: Sinks and small appliances
- Price Range: $200 – $300
Pros
- Ultra-compact design
- Energy-efficient with on-demand heating
- Simple installation
Cons
- Limited flow rate; not suitable for whole-house use
Eemax EEM12004
The Eemax EEM12004 is designed for point-of-use applications and features a higher flow rate for more versatility.
- Power: 3.5 kW
- Flow Rate: 0.9 GPM
- Best For: Sinks and small appliances
- Price Range: $150 – $250
Pros
- Good flow rate for point-of-use applications
- Compact design
Cons
- May require electrical upgrades depending on home setup
Atmor 800
Atmor 800 provides efficient heating for small water demands, making it ideal for residential or light commercial use.
- Power: 3.5 kW
- Flow Rate: 0.5 GPM
- Best For: Sinks and showers
- Price Range: $120 – $180
Pros
- Affordable price point
- Compact and easy to install
Cons
- Lower flow rate limits simultaneous usage
Technical Features Comparison
| Model Name | Power (kW) | Flow Rate (GPM) | Energy Efficiency | Warranty |
|---|---|---|---|---|
| Stiebel Eltron Mini 2 | 1.8 | 0.32 | High | 7 years |
| Eemax EEM12004 | 3.5 | 0.9 | Moderate | 5 years |
| Atmor 800 | 3.5 | 0.5 | Moderate | 1 year |
| Rheem RTEX-13 | 3.5 | 4.0 | High | 5 years |
| EcoSmart ECO 11 | 3.5 | 2.0 | High | Lifetime |
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Conclusion
Choosing the right 120 volt tankless water heater can significantly enhance your home’s hot water supply while saving energy and space. With various models available, it’s essential to consider your specific needs, including flow rates, power requirements, and installation space. Brands like Stiebel Eltron, Eemax, and Atmor offer a range of options that cater to different applications, ensuring there’s a suitable choice for every household.
FAQ
What is a tankless water heater?
A tankless water heater heats water directly as it flows through the unit, eliminating the need for a storage tank. This provides hot water on demand and reduces energy costs.
How does a 120 volt tankless water heater work?
It operates by using electric coils to heat water as it passes through the unit, providing hot water instantly without the energy loss associated with traditional tank heaters.
Are 120 volt tankless water heaters energy efficient?
Yes, they are energy efficient because they only heat water when needed, avoiding standby energy loss.
What size tankless water heater do I need?
The size depends on your household’s hot water demands. Check the flow rate and power ratings to find a model that meets your needs.
Can I install a tankless water heater myself?
It is recommended to have a professional install the unit to ensure safety and compliance with local building codes.
How long do tankless water heaters last?
Typically, tankless water heaters have a lifespan of 20 years or more, which is longer than traditional tank heaters.
Do I need to upgrade my electrical system?
Depending on the model, you may need to upgrade your electrical system to accommodate the power requirements of the heater.
Where can I buy 120 volt tankless water heaters?
You can find them at various retailers, including www.homedepot.com, www.lowes.com, and specialty sites like rustictools.com and e-tankless.com.
What is the warranty on tankless water heaters?
Warranties vary by model but typically range from 1 to 7 years for parts and up to a lifetime for certain models.
Can I use a tankless heater for my whole house?
Some models are designed for whole-house use, while others are better suited for point-of-use applications. Be sure to check the specifications before purchasing.