Tankless water heaters are becoming increasingly popular for their space-saving, energy-efficient design. If you’re in the market for a 110V tankless water heater, you’ll want one that’s not only compact and efficient but also delivers reliable performance. 110V models are ideal for small homes, apartments, or point-of-use installations, where traditional water heaters may be too bulky or energy-consuming.
In this guide, we’ll walk you through the best 110V tankless water heaters of 2025, focusing on efficiency, performance, and reliability. Whether you need hot water for a small sink or an entire bathroom, these models will provide hot water on demand without the need for a bulky tank.
Why Choose a 110V Tankless Water Heater?
110V tankless water heaters are particularly useful in smaller spaces or for single-point use. Here are a few reasons why they are a great choice:
- Space-Saving: 110V tankless models are compact, making them ideal for small spaces like apartments, kitchens, or bathrooms where installing a larger water heater might be impractical.
- Energy Efficiency: These units only heat water when it’s needed, ensuring that no energy is wasted in keeping water hot.
- On-Demand Hot Water: With a 110V tankless water heater, you get hot water instantly without waiting for a tank to heat up.
- Lower Utility Bills: Because they are energy-efficient and don’t store hot water, you’ll save on electricity bills, especially if you only need hot water at specific times.
Top 5 Best 110V Tankless Water Heaters of 2025
After extensive research and customer feedback, here are the top 5 110V tankless water heaters for 2025 that offer reliable performance, compact designs, and energy-saving features:
1. ECOFLOW Smart Tankless Water Heater
The ECOFLOW Smart Tankless Water Heater is one of the best 110V models available today. Known for its excellent performance and energy efficiency, this unit provides instant hot water without the waste of a traditional tank.
- Capacity: Ideal for small homes or point-of-use applications (e.g., kitchen or bathroom sink)
- Energy Efficiency: Energy Star certified, with 99% energy efficiency
- Smart Features: Wi-Fi-enabled for remote temperature control and monitoring
- Warranty: 5-year limited warranty
With its sleek design and advanced technology, the ECOFLOW Smart Tankless Water Heater offers reliable, on-demand hot water, making it perfect for single-point applications where space is limited.
2. Bosch Tronic 3000 4-Gallon Electric Tankless Water Heater
The Bosch Tronic 3000 is a popular 110V model for point-of-use applications. It’s designed for installations under sinks and provides hot water instantly, making it ideal for small apartments, kitchens, or bathrooms.
- Capacity: 4 gallons
- Energy Efficiency: High-efficiency design with minimal standby heat loss
- Compact Design: Can be installed in tight spaces, such as under sinks
- Warranty: 6-year limited warranty
The Bosch Tronic 3000 is well-regarded for its durability and space-saving design. This mini-tank unit is perfect for providing quick, on-demand hot water without taking up valuable space.
3. Atmor AT-900-03 110V Tankless Water Heater
The Atmor AT-900-03 is another excellent 110V tankless water heater that combines affordability with performance. Ideal for small homes or single-point applications, this model heats water on demand and is easy to install.
- Capacity: Best for point-of-use applications (e.g., single sinks or showers)
- Energy Efficiency: Energy-efficient, with low standby heat loss
- Compact Size: Small and easy to install in tight spaces
- Warranty: 1-year warranty
This unit is designed to provide instant hot water for small-scale applications, offering excellent value for its price. It’s ideal for homes with limited space or for use as a supplementary water heater.
4. Rinnai V53e Point-of-Use Tankless Water Heater
The Rinnai V53e is a highly-rated point-of-use 110V tankless water heater. Known for its reliable performance and energy-efficient operation, this unit provides endless hot water for single applications such as sinks or small showers.
- Capacity: 5.3 gallons per minute (GPM)
- Energy Efficiency: High energy factor (EF) for reduced energy consumption
- Compact Design: Small and space-saving, designed for tight spaces
- Warranty: 5-year limited warranty
The Rinnai V53e is one of the top choices for small to medium homes looking for an efficient and reliable water heater. Its compact design ensures easy installation, while its high performance ensures that you won’t run out of hot water.
5. Eccotemp i12-LP Tankless Water Heater
The Eccotemp i12-LP is a versatile 110V tankless water heater ideal for use in a variety of locations, from apartments to cabins. This model offers high efficiency and an affordable price point, making it a great value for homeowners.
- Capacity: 3.1 gallons per minute (GPM)
- Energy Efficiency: Energy-efficient design with minimal heat loss
- Smart Features: Remote control for temperature adjustment
- Warranty: 1-year limited warranty
This tankless water heater provides reliable hot water on demand, making it a great solution for homeowners looking for efficient heating for small spaces or specific points of use.
How to Choose the Best 110V Tankless Water Heater
Choosing the best 110V tankless water heater for your home depends on your specific needs. Here are some factors to consider when selecting a unit:
1. Assess Your Hot Water Usage
Think about how much hot water you use on a daily basis. If you need hot water for a single point of use, a smaller 110V model should suffice. However, if you need hot water for multiple applications (e.g., sinks and showers), consider a higher GPM model.
2. Energy Efficiency
Look for energy-efficient units that are Energy Star-rated or have high energy factors (EF). These models use less electricity, helping you save money on your utility bills in the long run.
3. Installation Requirements
Ensure that the model you choose is compatible with your existing electrical setup. 110V units are generally easier to install than higher-voltage models, but it’s still important to ensure the wiring is suitable for the unit’s requirements.
4. Size and Space
110V tankless water heaters are typically compact and perfect for small spaces. Consider where you’ll be installing the unit to ensure it fits properly and provides efficient performance for your needs.
Conclusion
Choosing the best 110V tankless water heater can help you enjoy instant hot water while saving space and energy. Whether you need a model for a small apartment or a supplementary unit for a bathroom or kitchen, the options above provide top-rated performance and reliability.
Ready to upgrade? Consider one of the top 5 best 110V tankless water heaters we’ve reviewed and enjoy hot water on demand, all while saving energy and space in your home.