The Ultimate Guide to 120V Tankless Water Heaters
In recent years, tankless water heaters have gained immense popularity due to their energy efficiency and convenience. Specifically, 120V tankless water heaters are ideal for point-of-use applications, making them an excellent choice for small households or specific needs like under-sink installations. This guide will provide comprehensive insights into 120V tankless water heaters, their types, applications, and essential features, enabling you to make an informed decision for your home.
Comparison of 120V Tankless Water Heater Types and Applications
| Type | Application | Flow Rate | Ideal Use Case |
|---|---|---|---|
| Point of Use | Under sink | 0.5 – 3 GPM | Kitchen sinks, bathrooms |
| Whole House | Small homes | 2 – 4 GPM | Small apartments, mobile homes |
| Booster | Supplement existing system | 1 – 2 GPM | Areas with low water pressure |
| Portable | Temporary setups | 0.5 – 1 GPM | Camping, outdoor activities |
Understanding 120V Tankless Water Heaters
120V tankless water heaters, also known as “on-demand” water heaters, heat water as it flows through the unit. Unlike traditional tank heaters, they do not store water, which helps in reducing energy consumption. These heaters are especially beneficial in settings where hot water demand is lower or for specific applications like sink installations.
Advantages of 120V Tankless Water Heaters
- Energy Efficiency: Since they only heat water as needed, they can significantly reduce energy costs.
- Space-Saving Design: Their compact size makes them suitable for small spaces, like under sinks or in mobile homes.
- Endless Hot Water: As long as the unit is appropriately sized, users can enjoy hot water without running out.
Limitations of 120V Tankless Water Heaters
- Lower Flow Rates: Compared to 240V models, 120V heaters typically have a lower flow rate, making them less suitable for larger households.
- Limited Applications: Ideal for point-of-use scenarios but may not meet the demands of simultaneous hot water usage in larger homes.
Key Features to Consider
When selecting a 120V tankless water heater, consider the following features:
1. Temperature Rise and Flow Rate
The temperature rise needed will dictate the flow rate your heater can achieve. For example, a 0.5 GPM flow rate at a 50°F temperature rise can be suitable for washing hands but might not suffice for a shower.
2. Energy Efficiency Rating
Look for models with high energy efficiency ratings. These units will save money over time by reducing energy consumption.
3. Installation Requirements
Review installation requirements, including electrical specifications and plumbing needs. Many 120V units are easier to install than their higher voltage counterparts.
Popular 120V Tankless Water Heaters
Here are some popular models available in the market:
1. Stiebel Eltron Electric Tankless Water Heater
- Flow Rate: Up to 3 GPM
- Ideal For: Small apartments or point-of-use applications
- Energy Efficiency: High
2. Atmor 800 120-Volt Tankless Water Heater
- Flow Rate: 0.5 GPM
- Ideal For: Handwashing stations
- Energy Efficiency: Moderate
3. Bosch Tronic 3000
- Flow Rate: 2.5 GPM
- Ideal For: Small homes
- Energy Efficiency: High
Technical Features Comparison
| Model | Flow Rate | Energy Efficiency | Dimensions (inches) | Price Range |
|---|---|---|---|---|
| Stiebel Eltron | Up to 3 GPM | High | 14.5 x 5.5 x 3.5 | $300 – $500 |
| Atmor 800 | 0.5 GPM | Moderate | 10.5 x 8.5 x 3.5 | $150 – $250 |
| Bosch Tronic 3000 | 2.5 GPM | High | 12.5 x 8 x 4.5 | $200 – $400 |
Related Video
Conclusion
Choosing a 120V tankless water heater offers numerous benefits, including energy savings, space efficiency, and the convenience of on-demand hot water. Understanding the various types, applications, and features will guide your decision-making process. Whether you need a unit for a small apartment or a specific point-of-use application, there is a suitable model available to meet your needs.
FAQ
What is a 120V tankless water heater?
A 120V tankless water heater is an on-demand heating unit that heats water as it flows through the system, ideal for point-of-use applications like sinks.
How does a tankless water heater work?
It works by using electrical elements to heat water instantly, eliminating the need for a storage tank.
What are the benefits of using a 120V unit?
Benefits include energy efficiency, space savings, and the ability to provide hot water only when needed.
Can I install a 120V tankless water heater myself?
While some models are easy to install, it’s recommended to consult a professional to ensure proper installation and compliance with local codes.
What’s the average lifespan of a tankless water heater?
Typically, they last about 15 to 20 years with proper maintenance.
Are there any maintenance requirements?
Regular descaling and checking for mineral buildup are essential, especially in areas with hard water.
Can I use a 120V tankless water heater for a shower?
Yes, but ensure that the flow rate meets your requirements for temperature and pressure.
How do I determine the right size for my needs?
Consider factors like the number of outlets using hot water simultaneously and the desired temperature rise.
What is the price range for a 120V tankless water heater?
Prices typically range from $150 to $500, depending on the model and features.
Where can I purchase a 120V tankless water heater?
You can find various models at retailers like www.homedepot.com, www.lowes.com, and specialized sites like tanklessheaterguides.com.