best 120 volt tankless water heater that will surprise you
Struggling with inconsistent hot water at your sink? A tankless water heater can provide instant hot water whenever you need it.
A tankless water heater’s core purpose is to deliver on-demand hot water efficiently. Options like the ThermoMate 3500W and Rheem 3.5kW ensure you never run out. These models are compact, saving space while providing reliable performance.
Standout features include the self-modulating technology of the ThermoMate, which optimizes energy use, and the thermostatic control of the Rheem, ensuring precise temperature management. Both products simplify hot water access, making them ideal for small spaces.
In our full review, we break down performance, durability, and more to help you choose the right model.
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ThermoMate 3500W Electric Tankless Water Heater
The adjustable valve sets the ThermoMate 3500W apart in the realm of tankless water heaters. Designed specifically for single sink faucet applications, this unit boasts a compact size of 7.9″ x 6.4″ x 2.5″, making it ideal for tight spaces such as under cabinets or sinks. Constructed with SUS 304 stainless steel water tubes and a cast aluminum heating element, the heater ensures durability and resistance to corrosion.
Key Advantages
- With a power output of 3500W at 120V, this heater provides instant hot water, delivering between 0.4GPM to 0.66GPM. Its self-modulating technology enhances energy efficiency, achieving a remarkable 99.8% efficiency rate.
Limitations
- Not compatible with 240V systems or standard plug-in installations; it requires hardwiring to a 32A Double Pole Circuit Breaker.
Equipped with a touch control panel and a digital temperature display, users can easily adjust the temperature in 1° increments, with a range from 86°F to 131°F. Additionally, the unit features an IP25 waterproof rating, ensuring safety in various environments.
Best for outdoor enthusiasts and professionals needing reliable, space-saving hot water solutions in areas like hair salons, bar counters, or hotel receptions, the ThermoMate 3500W is a solid investment for point-of-use applications.
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ThermoMate Mini Tankless Water Heater
The adjustable valve sets the Mini Tankless Water Heater Electric 110V ~ 120V apart from its competitors. This compact unit, measuring 10.95″ x 7.4″ x 2.52″, is designed for tight spaces, making it ideal for under sinks and cabinets. Constructed with SUS 304 stainless steel water tubes and featuring a cast aluminum heating element, it ensures durability and resistance to corrosion, significantly reducing scale and mineral buildup.
Key Advantages
- The 4.5kW heating capacity delivers on-demand hot water at a rate of 0.66GPM and can reach temperatures up to 115°F.
Limitations
- Not compatible with 240V systems; this unit is strictly for 120V hardwired applications.
With a touch control panel and digital temperature display, users can adjust settings in 1° increments, enhancing user experience. The IP25 waterproof rating adds a layer of safety, making it suitable for various installations. This heater requires a 40A Double Pole Circuit Breaker and 10AWG wiring, which may necessitate professional installation.
Best for outdoor enthusiasts needing a reliable and efficient hot water solution for single faucets, this mini tankless water heater combines performance with compact design, making it a valuable addition to any home or business.
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Rheem 3.5kW Point of Use Water Heater
The adjustable valve sets the Rheem 3.5kW 120V Point of Use Thermostatic Tankless Electric Water Heater apart from its competitors. This unit features a compact design, measuring just 13.75 x 8.75 x 4.75 inches, and is constructed from 316-grade stainless steel, ensuring durability and resistance to corrosion. With a power output of 3.5 kW, it operates efficiently at 120 volts, requiring a 30 AMP double pole breaker for installation.
Key Advantages
- The easily adjustable thermostatic temperature controls allow for precise settings in 1-degree increments, ranging from 80 to 140 degrees Fahrenheit, providing on-demand, consistent hot water tailored to user preferences.
- Its compact size makes it ideal for low flow point-of-use applications, such as in bathrooms, office breakrooms, wet bars, or garages, taking up to 98% less space than standard electric water heaters.
Limitations
- This unit is not compatible with higher flow applications and may not meet the demands of larger households requiring simultaneous hot water access.
Best for outdoor enthusiasts needing a reliable and space-saving solution for instant hot water in remote locations or small spaces, the Rheem 3.5kW unit excels in efficiency and convenience.
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BOSCH Mini-Tank Water Heater 2.5-Gallon
The adjustable valve sets the BOSCH Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) apart from its competitors, allowing users to customize water flow and temperature settings to their specific needs. This compact unit measures 13.75 inches in width, 13.75 inches in height, and 10.75 inches in depth, making it an excellent fit for under-sink installations.
Key Advantages
- The unit features a thermal efficiency of 98%, ensuring minimal energy waste while providing hot water on demand.
- Constructed with premium glass-lined material, it resists corrosion and extends the lifespan of the heater.
- With a 1440W power output, it delivers rapid heating, supplying hot water to up to two sinks simultaneously.
- The 36-37″ cord allows for flexible installation options, making it easy to plug into a standard 120-volt outlet.
- It can be mounted on shelves, walls, or floors, providing versatility in installation.
Limitations
- Not compatible with larger hot water systems, limiting its use to point-of-use applications.
- Requires a dedicated electrical outlet, which may necessitate additional installation work in some settings.
This water heater is best for outdoor enthusiasts needing quick access to hot water at remote locations or in small spaces, enhancing convenience without compromising on performance.
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Camplux Electric 3.5kW Instant Water Heater
The adjustable valve sets the CAMPLUX Tankless Water Heater apart, allowing for precise temperature control and efficient operation. This unit is constructed from durable materials, featuring a compact design with dimensions of 7.8W × 6.3H × 3.9D inches, making it suitable for tight spaces in kitchens, bathrooms, and other locations.
Key Advantages
- The heater employs **316-grade stainless steel**, which resists corrosion and enhances longevity. Its self-modulating technology optimizes energy consumption, saving up to **98%** in energy costs. The unit heats water instantly, achieving a temperature rise of **22°F** at a flow rate of **1.0 GPM**, providing hot water in just **3 seconds**.
Limitations
- This model is **not compatible** with standard plug-in setups as it requires hardwiring and a dedicated **32A circuit breaker**. Additionally, it is designed for single-sink use only, limiting its applications in larger households.
Best for outdoor enthusiasts needing a reliable and energy-efficient hot water solution in compact spaces, the CAMPLUX Tankless Water Heater is an excellent choice for those who prioritize performance and safety in their hot water needs. With ETL certification and built-in safety features, it ensures both convenience and peace of mind.
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Faq about best 120 volt tankless water heater:
1:What is a 120 volt tankless water heater?
A 120 volt tankless water heater heats water on demand using 120 volts of electricity, providing hot water without a storage tank.
2:How does a 120 volt tankless water heater work?
It activates when a hot water tap is turned on, heating water as it flows through the unit, ensuring a continuous supply of hot water.
3:What are the benefits of using a 120 volt tankless water heater?
Benefits include energy efficiency, space savings, and an endless supply of hot water, making it ideal for small homes or apartments.
4:Can a 120 volt tankless water heater meet my household needs?
It is suitable for low to moderate hot water demands, such as single faucets or small showers, but may struggle with multiple simultaneous uses.
5:What should I consider when buying a 120 volt tankless water heater?
Consider the flow rate, energy efficiency, installation requirements, and the specific hot water needs of your household.
6:Are there any maintenance requirements?
Regular descaling and cleaning are recommended to maintain efficiency and prolong the lifespan of the unit.
7:How long do these heaters last?
With proper maintenance, a 120 volt tankless water heater can last 15 to 20 years.
Conclusion
The ThermoMate 3500W Electric Tankless Water Heater exemplifies efficiency and robust performance, catering to households seeking a continuous supply of hot water while minimizing energy consumption. Its advanced technology ensures rapid heating, making it an optimal choice for larger demands.
Conversely, the ThermoMate Mini Tankless Water Heater is tailored for compact spaces, delivering convenience without compromising on quality. Ideal for smaller households or specific applications, its design underscores versatility and reliability, making it a commendable option for targeted use.