RV Water Heaters

What is an RV Water Heater?

An RV water heater is a device that heats water for your recreational vehicle’s sinks, shower, and other water fixtures. These heaters are designed to be compact, efficient, and capable of working with the power sources available in an RV, such as propane, electricity, or a combination of both.

Because space in an RV is limited, RV water heaters are usually smaller and more efficient than the ones found in traditional homes. However, they still provide the same hot water functionality that you need to keep your RV comfortable, whether you're boondocking in the wilderness or hooked up to full-service campgrounds.

Why Is an RV Water Heater Important?

An RV water heater is crucial for several reasons:

• Convenience: Hot water is necessary for cooking, cleaning, personal hygiene, and maintaining comfort while traveling. Without a water heater, you'd have to rely on alternative methods like heating water over a stove, which can be time-consuming and impractical.
• Comfort: When you're away from home, you still want to enjoy the comforts of a warm shower and clean dishes. A water heater allows you to have that home-like comfort on the road.
• Efficiency: Modern RV water heaters are designed to be energy-efficient, so they provide hot water while consuming minimal energy, which is crucial for RV living where resources like electricity and propane are limited.

Types of RV Water Heaters

There are several different types of RV water heaters, each with its own set of advantages and disadvantages. The most common types are tank-based water heaters and tankless water heaters, with variations in how they are powered (propane, electricity, or both). Let's explore these different types in more detail.

1. Tank-Based RV Water Heaters

Overview:

Tank-based water heaters are the most common type found in RVs. They work by storing a specific amount of water in a tank, heating it, and then keeping it warm until you need it. These systems typically run on either propane or electricity, or in some cases, a combination of both.

How It Works:

• Water is stored in a tank and heated using either propane burners or an electric heating element.
• The heated water is then kept in the tank until it’s needed.
• When you turn on a hot water faucet, the heated water flows through the system and out of the tap.

Pros:

• Reliable and familiar: Tank-based systems are tried and tested, and most RVers are familiar with how they operate.
• Affordable: Tank-based heaters are often less expensive upfront than tankless systems.
• Easy to maintain: These systems are relatively simple and easy to maintain, as they have fewer components that may need replacing.

Cons:

• Limited hot water supply: Once the water in the tank is used up, you must wait for the heater to heat up more water, which can be a problem if you have a large family or are using multiple water fixtures simultaneously.
• Size: Tank-based heaters take up more space than tankless models, which may be a consideration for RV owners with limited storage.

Best For:

• RVers with moderate water usage: If you typically take short showers or don't mind waiting for the water to heat up again, a tank-based water heater is an excellent choice.
• Budget-conscious RVers: Tank heaters are usually more affordable upfront and still provide plenty of hot water for your needs.

2. Tankless RV Water Heaters

Overview:

Tankless RV water heaters, also known as on-demand or instantaneous water heaters, provide hot water as it’s needed, without the need for a storage tank. These systems heat water on demand by running it through a heating element as it flows through the unit.

How It Works:

• Water is drawn through the unit and heated on demand as it passes through a heating element.
• The system provides a continuous supply of hot water, as long as there’s a source of power.
• Tankless heaters are powered by either propane or electricity, depending on the model.

Pros:

• Endless hot water: Because the water is heated as it flows, there’s no limit to how much hot water you can use.
• Compact size: Tankless heaters are smaller and more space-efficient than traditional tank heaters, making them ideal for RVs with limited space.
• Energy-efficient: These systems only heat water when it's needed, which can save energy compared to tank-based systems that continually heat and store water.

Cons:

• Higher upfront cost: Tankless water heaters typically cost more than tank-based systems, both in terms of the unit itself and installation costs.
• Limited flow rate: While tankless heaters provide an endless supply of hot water, their flow rate may be limited. This means that if you’re running multiple water fixtures at once, the temperature may fluctuate or decrease.
• Complex installation: Installing a tankless water heater in an RV can be more complicated than installing a tank-based system, especially if you need to upgrade your electrical or gas systems to accommodate the unit.

Best For:

• Full-time RVers: If you live in your RV full-time or are on the road for extended periods, the constant supply of hot water that a tankless system provides is invaluable.
• RVers with limited space: Tankless units are more compact, making them a great choice for RVs with tight spaces.
• Energy-conscious RVers: If you’re looking to conserve energy and avoid wasting propane or electricity by heating water that you’re not using, a tankless unit is a great choice.

Features to Look for in an RV Water Heater

When shopping for an RV water heater, several key features should influence your decision. These features can enhance the functionality, efficiency, and overall experience of your water heater, making it a worthwhile investment for your RV.

1. Fuel Source: Propane vs. Electricity

Most RV water heaters are powered by either propane, electricity, or a combination of both. Here are some things to consider when deciding which fuel source is best for your RV:

• Propane: Propane is commonly used because it’s widely available and works well when you’re off the grid. However, propane will need to be replenished periodically, especially with frequent use.
• Electricity: Electric water heaters are more energy-efficient and ideal for RVs that are connected to a power source, like at a campground. However, they may not be as effective when you're boondocking, unless you have a robust solar setup or generator.

2. Recovery Rate

The recovery rate refers to how quickly the water heater can heat a new batch of cold water after the initial supply has been used. This is important if you plan on using a lot of hot water at once or if you have a large family.

3. Capacity

Capacity refers to the amount of water your heater can hold or heat at a time. For tank-based water heaters, the typical size is between 6 to 10 gallons. Tankless water heaters, on the other hand, provide continuous hot water as long as the flow rate is maintained.

• For small to medium-sized RVs, a 6-gallon tank is typically sufficient.
• Larger RVs with more people using water simultaneously might need a larger tank or a tankless system to meet their demands.

4. Energy Efficiency

The energy efficiency of your RV water heater is important if you want to conserve energy while still enjoying the benefits of hot water. Tankless water heaters are generally more energy-efficient because they only heat water when needed, as opposed to maintaining a hot water supply in a tank.

If you're looking for ways to conserve propane or electricity, an energy-efficient water heater is a smart choice.

5. Ease of Installation

While most RV water heaters are designed to be relatively easy to install, tankless models often require more complex installation, including upgraded electrical systems or plumbing modifications. Make sure to assess the installation requirements for the model you're considering, especially if you're planning to install it yourself.

How to Choose the Right RV Water Heater for Your Needs

Choosing the right RV water heater for your needs depends on several factors, including your travel habits, space limitations, and energy consumption preferences. Here's a quick guide to help you make an informed decision:

Consider Your Hot Water Needs

• If you only need hot water occasionally or for short showers, a tank-based system may be sufficient.
• If you require a constant supply of hot water for long showers or multiple users, consider a tankless water heater for endless hot water.

Evaluate Your Energy Sources

• For off-grid camping or boondocking, a propane-powered water heater is often the most reliable option.
• If you're primarily staying in campgrounds with hookups, an electric-powered water heater may be more energy-efficient.

Think About Space Constraints

• Tankless water heaters are ideal for small RVs with limited space.
• If you have the space, a tank-based system can provide a larger supply of hot water for bigger families or longer trips.