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110-Volt Tankless Water Heater for RV: Top 5 Best!

When it comes to selecting a water heater for your RV, you want something that is safe, efficient, and reliable. That is why many RV owners opt for a 110-volt tankless water heater for RV. These types of water heaters are easy to install and maintain and can provide an endless supply of hot water. But before you buy one, there are a few things you should know about these units so that you can decide if it’s the right choice for your RV.

110-Volt Tankless Water Heater for RV: Advantages and Disadvantages

We will explore the advantages and disadvantages of using a 110-volt tankless water heater for your RV, helping you make an informed decision.

Advantages of a 110-Volt Tankless Water Heater for RV:

  1. Compact Size: One of the significant advantages of a 110-volt tankless water heater is its compact size. These units are designed to fit in small spaces, making them ideal for RVs where space is limited. Their compact nature allows for easier installation and frees up valuable storage space in your RV.
  2. Energy Efficiency: 110-volt tankless water heaters are known for their energy efficiency. Unlike traditional water heaters with storage tanks that continuously heat and reheat water, tankless heaters only heat water when needed. This on-demand heating reduces energy consumption, resulting in lower utility bills and reduced environmental impact.
  3. Continuous Hot Water Supply: With a 110-volt tankless water heater, you can enjoy a continuous supply of hot water in your RV. These units heat water as it passes through, ensuring that hot water is available whenever you need it. Whether you’re taking a shower, washing dishes, or doing laundry, you won’t have to worry about running out of hot water.
  4. Temperature Control: Most 110-volt tankless water heaters come with temperature control features, allowing you to set the desired water temperature. This level of control ensures that you can adjust the water temperature to suit your preferences and specific needs. It also helps prevent scalding accidents by maintaining a consistent temperature.

Also Read: Electric Tankless Water Heater for Camper

Disadvantages of a 110-Volt Tankless Water Heater for RV:

  1. Limited Flow Rate: One of the drawbacks of a 110-volt tankless water heater is its limited flow rate. These units typically have a lower flow rate compared to higher voltage models. As a result, they may struggle to provide hot water simultaneously to multiple fixtures in your RV. It’s essential to consider your hot water demands and the number of people using hot water at the same time.
  2. Lower Heating Capacity: 110-volt tankless water heaters have a lower heating capacity compared to their higher-voltage counterparts. While they can adequately handle basic hot water needs, such as showers and dishwashing, they may not be suitable for heavy-duty applications. If you require a high flow rate or need hot water for large appliances like a washing machine, a higher voltage model might be more appropriate.
  3. Slower Heating Time: Due to the lower voltage, 110-volt tankless water heaters may have a slower heating time compared to higher voltage options. It might take a little longer for the water to reach the desired temperature, especially in colder climates or when the incoming water temperature is low. Patience may be required while waiting for the hot water to flow.

Best Electric Tankless Water Heater for RV

We will explore some of the best electric tankless water heaters available for RVs, considering factors such as performance, durability, energy efficiency, and user satisfaction.

1. EcoSmart ECO 11 Electric Tankless Water Heater:

The EcoSmart ECO 11 is a popular choice among RV enthusiasts for its impressive performance and energy efficiency. It offers a compact design suitable for limited space in RVs, and its self-modulating technology ensures that energy is used efficiently. With a maximum flow rate of 2.5 gallons per minute, it can provide ample hot water for showers, dishwashing, and other tasks.

2. Rheem RTEX-18 Electric Tankless Water Heater:

The Rheem RTEX-18 is another highly regarded option for RV owners seeking reliable hot water on the go. With a robust 18kW heating element, it delivers a maximum flow rate of 4.4 gallons per minute, making it suitable for larger RVs and families. The digital temperature control allows precise adjustments, while the durable copper immersion heating elements ensure long-lasting performance.

3. Stiebel Eltron Tempra Plus 24 Electric Tankless Water Heater:

Renowned for its German engineering and quality, the Stiebel Eltron Tempra Plus 24 is a top-tier choice for RV owners looking for a high-performance tankless water heater. This unit offers advanced flow control technology, maintaining a constant output temperature even when the water demand fluctuates. With a maximum flow rate of 4.0 gallons per minute, it can provide hot water for multiple fixtures simultaneously.

4. Camplux 5L Portable Propane Tankless Water Heater:

While not electric, the Camplux 5L Portable Propane Tankless Water Heater deserves a mention for its convenience and versatility. This compact and lightweight unit is powered by propane, making it an excellent choice for RVs without access to electricity. With a 5-liter capacity, it provides a continuous hot water supply and is easy to install and operate.

5. Bosch Tronic 3000 T Electric Tankless Water Heater:

The Bosch Tronic 3000 T is a reliable and compact electric tankless water heater suitable for smaller RVs and limited space. With a sleek design and easy installation, it offers a flow rate of up to 2.5 gallons per minute, providing sufficient hot water for basic needs. The temperature control knob allows simple adjustments, and the unit’s robust construction ensures durability.


  1. Can you use an electric tankless water heater in an RV?

Yes, you can use an electric tankless water heater in an RV. Electric tankless water heaters are a popular choice for RV owners due to their compact size, energy efficiency, and ability to provide on-demand hot water. They do not require a storage tank, making them ideal for RVs with limited space. However, it’s essential to ensure that your RV’s electrical system can handle the power requirements of the tankless water heater.

  1. What size tankless water heater for my RV?

The size of the tankless water heater for your RV depends on several factors, including the number of people using hot water simultaneously, your hot water usage patterns, and the climate you will be traveling in. It’s recommended to choose a tankless water heater with a flow rate that meets your specific needs. For smaller RVs and basic hot water requirements, a unit with a flow rate between 1.5 to 2.5 gallons per minute may suffice. Larger RVs or those with higher hot water demands may require a unit with a higher flow rate.

  1. Can you get a 110 hot water heater?

Yes, you can get a 110 hot water heater. A 110-volt hot water heater, also known as a 110-volt tankless water heater, is designed to operate on standard 110-volt electrical systems. These units are commonly used in RVs, as they offer convenience, energy efficiency, and compact size. It’s important to consider the flow rate and heating capacity of the 110 hot water heater to ensure it meets your specific hot water needs.


110-volt tankless water heaters and electric tankless water heaters are great options for RV owners looking for an efficient and space-saving way to get their hot showers without having to worry about running out or burning through propane or natural gas supplies too quickly. While there are some downsides like slower recovery time compared with traditional tank-style models, these disadvantages might not be noticeable depending on how often and how many people need access to warm showers at once in your RV setup. So next time you’re shopping around for an RV water heater upgrade consider investing in a 110-volt tankless model you won’t regret it.

Also Read: 10 Best Van Racking Ideas For Carpenters

Nyra Abigail

My Name is Nyra Abigail and in 2016, I made the decision to leave my traditional living situation and hit the road in a Dodge Ram Van. Since then, I've had the opportunity to camp in 48 states and hike in many of the United States' National Parks. My mission is to inspire and assist others in living an adventurous lifestyle, whether that be through van life or RV living. We provide a comprehensive resource to help guide and support individuals on their own journeys of discovery.

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