Is your RV water heater not meeting your needs? Consider replacing it with a tankless water heater.
This upgrade offers endless hot water and frees up valuable space in your RV. A tankless water heater can be a game-changer for your RV lifestyle. Traditional water heaters store and heat a limited amount of water, which can run out quickly during showers or dishwashing.
Tankless models, on the other hand, heat water on demand. This means you get a continuous supply of hot water whenever you need it. They are also more energy-efficient, helping you save on fuel costs. The compact size of tankless heaters can free up storage space, making your RV feel less cramped. Ready to make the switch? Let’s explore the benefits and steps to replace your RV water heater with a tankless model.

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Benefits Of Tankless Water Heaters
Replacing your RV water heater with a tankless version can bring numerous advantages. These modern systems offer several benefits that make them a compelling choice for RV owners.
Unlimited Hot Water
With a tankless water heater, you get unlimited hot water. Traditional heaters store a limited amount of hot water. Once it’s gone, you wait for more to heat up. Tankless systems heat water on demand. This means you never run out of hot water. Enjoy long, hot showers without worry.
Energy Efficiency
Tankless water heaters are highly energy-efficient. They only heat water when you need it. This reduces energy consumption. Traditional heaters keep water hot all the time. This wastes energy. A tankless system can cut your energy bills significantly. It’s also better for the environment.
Space Saving
A tankless water heater saves space in your RV. Traditional water heaters are bulky and take up a lot of room. Tankless models are compact. They can be installed in small spaces. This frees up valuable storage space in your RV. You can use the extra room for other essentials.
Feature | Tankless Water Heater | Traditional Water Heater |
---|---|---|
Hot Water Supply | Unlimited | Limited |
Energy Use | On-demand | Continuous |
Size | Compact | Bulky |

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Choosing The Right Tankless Water Heater
Choosing the right tankless water heater for your RV is crucial. It ensures you have a steady supply of hot water without taking up too much space. There are several factors to consider, including size, fuel type, and brand. Let’s break down these considerations to help you make an informed decision.
Sizing Considerations
Size is an important factor when selecting a tankless water heater. You need a unit that can meet your hot water needs without being too large or too small. Consider the following:
- Flow rate: Measure in gallons per minute (GPM). Ensure it meets your peak demand.
- Space available: Check the dimensions of the unit. Ensure it fits in the designated space.
- Usage patterns: Consider how often you use hot water. Adjust size accordingly.
Electric vs. Gas
Deciding between an electric and gas tankless water heater depends on several factors:
Criteria | Electric | Gas |
---|---|---|
Efficiency | Higher efficiency, lower operating costs. | Lower efficiency, higher operating costs. |
Installation | Easier, no venting required. | Requires venting, more complex. |
Maintenance | Less maintenance needed. | More maintenance, especially for venting. |
Top Brands
Several brands offer reliable tankless water heaters for RVs. Here are some top choices:
- EcoSmart: Known for energy efficiency and compact designs.
- Rinnai: Offers robust models with high performance.
- Camplux: Popular for easy installation and affordability.
- Suburban: Trusted for durability and excellent customer support.
Choosing the right brand ensures you get a quality product that lasts.
Preparing For Installation
Preparing for the installation of a tankless RV water heater is crucial. This ensures a smooth and successful process. Following these steps will help you get ready.
Gathering Tools And Materials
Start by collecting all necessary tools and materials. You will need a wrench, screwdriver, pipe cutter, and Teflon tape. Make sure to have the new tankless water heater and any manufacturer-provided accessories.
Having everything ready will save time. It will also prevent interruptions during installation. Check the manual for specific items required.
Safety Precautions
Safety should always be a top priority. Wear protective gloves and goggles. This will protect you from any debris or splashes.
Ensure your workspace is well-ventilated. This is important for avoiding inhalation of fumes. Keep a fire extinguisher nearby. Accidents can happen, and it is best to be prepared.
Turn Off Utilities
Before starting, turn off all utilities connected to the water heater. This includes water, gas, and electricity. Double-check to ensure they are completely off.
This step prevents any accidents during the installation. It also makes the process safer and easier. Confirm there is no power running to the old water heater.
Removing The Old Water Heater
Replacing your RV’s water heater with a tankless system starts with removing the old unit. This process involves several steps. Each step is crucial to ensure a smooth transition. Follow the instructions below to safely remove your old water heater.
Draining The Tank
First, turn off the water supply to the heater. Open the hot water faucet to relieve pressure. Locate the drain valve at the bottom of the tank. Attach a hose to the drain valve. Run the hose to a safe drainage area. Open the valve and let the water flow out. Wait until the tank is completely empty.
Disconnecting Connections
After draining the tank, disconnect the power supply. This can be an electric connection or a gas line. Use a wrench to disconnect the gas line. If it’s electric, ensure the breaker is off. Then, disconnect the wires. Next, detach the water lines from the heater. Have a towel ready to catch any remaining water.
Removing Mounting Hardware
Finally, locate the mounting hardware securing the heater. This could be screws, bolts, or brackets. Use the appropriate tools to remove them. Carefully slide the water heater out of its compartment. Be cautious, as it may still be heavy. Once removed, clean the area for the new tankless water heater installation.
Installing The Tankless Water Heater
Replacing your RV water heater with a tankless model can greatly improve efficiency. The installation process may seem daunting, but with clear steps, it becomes manageable. Below, we will guide you through mounting the unit, connecting water lines, and connecting the power source.
Mounting The Unit
Begin by selecting a suitable location for the tankless water heater. Ensure the spot has proper ventilation. Mark the mounting points on the wall using the template provided. Drill holes where marked and insert wall anchors. Secure the unit to the wall with the provided screws.
Connecting Water Lines
Turn off the main water supply to your RV. Disconnect the old water heater’s lines. Attach the cold water inlet and hot water outlet lines to the tankless unit. Use Teflon tape to ensure a tight seal. Check for any leaks by turning the water supply back on.
Connecting Power Source
Ensure the power is off at the main breaker. Connect the electrical wires from the RV to the tankless water heater. Follow the manufacturer’s wiring diagram. Secure the connections with wire nuts. Turn on the power and test the unit to ensure it heats water properly.

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Testing And Adjusting
Testing and adjusting your new tankless RV water heater is essential for optimal performance. This ensures your unit works efficiently and safely. Follow these steps to test and adjust your tankless water heater.
Checking For Leaks
First, inspect all connections for leaks. Turn on the water supply and check each joint. Use a flashlight to spot any drips. Tighten connections if needed. A small leak can cause big problems over time.
Adjusting Temperature Settings
Set the desired temperature on the unit. Start with a lower setting to avoid scalding. Gradually increase the temperature until it reaches your preference. Many units have a digital display for easy adjustment.
Ensuring Proper Operation
Run hot water through your taps to check the heater’s performance. Ensure the water heats up quickly and maintains a steady temperature. Listen for any unusual noises. If the unit operates smoothly, your installation is successful.
Maintenance Tips
Maintaining your tankless RV water heater ensures it works efficiently and lasts longer. Regular maintenance can save you from unexpected issues and costly repairs. Here are some essential maintenance tips to keep your system running smoothly.
Regular Descaling
Descaling your tankless water heater is crucial. It prevents mineral build-up, which can clog the system. Follow these steps:
- Turn off the power and water supply.
- Connect a hose to the service valve.
- Use a descaling solution to flush out minerals.
- Rinse the system thoroughly with clean water.
Perform this process every six months, especially in areas with hard water.
Inspecting Connections
Regularly inspect all connections for signs of wear or leaks. Follow these tips:
- Check water and gas connections monthly.
- Tighten any loose connections.
- Replace damaged or worn-out parts immediately.
These checks can prevent serious issues and ensure your system operates safely.
Cleaning Filters
Cleaning the filters keeps the water flowing smoothly and prevents blockages. To clean the filters:
- Turn off the water supply.
- Remove the filter from the inlet.
- Rinse the filter under running water.
- Reinstall the clean filter.
Clean the filters every three months for optimal performance.
By following these maintenance tips, you can ensure your tankless RV water heater functions efficiently and lasts longer. Regular care prevents common issues and enhances the heater’s performance.
Troubleshooting Common Issues
Replacing your RV water heater with a tankless model can offer many benefits. But, it can also come with a few issues. Understanding these common problems can help ensure a smooth experience. Below, we address some common troubleshooting tips for your tankless RV water heater.
Low Water Pressure
Low water pressure in your tankless water heater can be frustrating. First, check the water pump. It might not be working efficiently. Also, inspect the water lines for any leaks. Leaks can reduce the pressure. Finally, clean the water filter. A clogged filter can restrict water flow.
Inconsistent Temperature
Inconsistent water temperature is a common issue with tankless water heaters. Check the propane supply. Low propane levels can cause fluctuations. Ensure the water heater settings are correct. Sometimes, adjusting the settings can solve the problem. Clean the heater’s burner and the venting system. Dirt and debris can affect performance.
Error Codes
Error codes on your tankless water heater can seem confusing. Refer to the manual to understand what each code means. Common error codes can indicate issues like blocked vents or ignition problems. Reset the system to clear minor errors. If the error persists, contact a professional. They can perform a thorough check-up and fix the issue.
Frequently Asked Questions
What Are The Benefits Of A Tankless Rv Water Heater?
A tankless RV water heater provides continuous hot water, energy efficiency, and saves space. It heats water only when needed. This reduces energy consumption and offers unlimited hot water for showers and washing dishes.
How Do I Install A Tankless Rv Water Heater?
Installing a tankless RV water heater involves removing the old unit, mounting the new one, and connecting water and gas lines. Follow the manufacturer’s instructions. Ensure proper ventilation and test the unit for leaks and functionality.
Is A Tankless Water Heater Worth It For An Rv?
Yes, a tankless water heater is worth it for an RV. It provides endless hot water, saves space, and is energy-efficient. It offers convenience and can enhance your RV experience by providing consistent hot water.
How Long Does A Tankless Rv Water Heater Last?
A tankless RV water heater typically lasts around 10-15 years. Regular maintenance, such as descaling and checking for leaks, can extend its lifespan. Proper care ensures efficient performance and longevity.
Conclusion
Switching to a tankless RV water heater offers many benefits. You save space. You get hot water instantly. There’s less maintenance required. Plus, it’s energy-efficient. These factors make it a smart choice for your RV. Consider upgrading to enjoy these advantages.
Your travels will be more comfortable and convenient. Make the change today and experience the difference.