5 Best Tankless Water Heater for Camper [In 2025]

As an expert in RV and camper products, I’ve carefully reviewed several of the top tankless water heaters on the market to help you make an informed decision for your camper or motorhome. Tankless water heaters offer significant advantages over traditional tank-style heaters, providing endless hot water on demand while taking up less space. In this comprehensive guide, I’ll dive into the key features, pros, and cons of the best options to help you find the perfect tankless water heater for your RV.

5 Best Tankless Water Heater for Camper Reviews

KYX RV Tankless Water Heater 67,000 BTU

Overview

The KYX RV Tankless Water Heater is a powerful 67,000 BTU unit that delivers up to 3.9 GPM of continuous hot water. It’s designed as a universal replacement for most RV models, featuring a 15-inch door that fits 13-14.55-inch openings.

Specs

• 67,000 BTU output for up to 3.9 GPM of hot water
• Fits 13-14.55-inch openings with 15-inch door
• Adjustable temperature range from 95°F to 124°F
• Digital control panel with temperature and status monitoring
• Includes shower kit, remote controller, and safety features
• CSA certified for safety and reliability

Pros

• Powerful performance with 67,000 BTU output
• Flexible temperature control for optimal comfort
• Universal fit for easy replacement of existing heaters
• Includes comprehensive safety features and accessories
• CSA certification for quality assurance

Cons

• May require professional installation for some RV models
• Higher price point compared to some competitors

ELEISIOS RV Tankless Water Heater, 68,000 BTU

Overview

The ELEISIOS RV Tankless Water Heater boasts a high-altitude mode and a powerful 68,000 BTU output, delivering up to 3.9 GPM of hot water. Its universal design fits most RV models with a 12.7×12.7-inch opening and 15×15-inch door.

Specs

• 68,000 BTU output for up to 3.9 GPM of hot water
• High-altitude mode for reliable operation up to 9,800 feet
• Adjustable temperature range from 95°F to 123°F
• 12.7×12.7-inch opening and 15×15-inch door for universal fit
• Vibration-resistant and low-noise design for RV use
• CSA-certified with advanced safety features

Pros

• Powerful 68,000 BTU output for ample hot water
• High-altitude mode for reliable performance in mountainous areas
• Universal fit for easy replacement of existing RV water heaters
• Quiet and vibration-resistant design for a comfortable RV experience
• CSA certification for safety and quality assurance

Cons

• Some customers report temperature inconsistencies
• May require professional installation for some RV models

Rinnai RE160eP Non-Condensing Propane Tankless Water Heater

Overview

The Rinnai RE160eP is a high-efficiency non-condensing propane tankless water heater designed for outdoor installation. It offers up to 6.1 GPM of hot water, making it a great choice for larger RVs and campers.

Specs

• 160,000 BTU output for up to 6.1 GPM of hot water
• Compact and space-saving design for outdoor installation
• LED display with service reminders and error codes
• 15-year, 5-year, and 1-year residential warranty coverage
• Compatibility with Rinnai Controlr for Wi-Fi connectivity

Pros

• Powerful 160,000 BTU output for ample hot water
• Compact and space-saving outdoor design
• LED display with helpful service and error information
• Comprehensive residential warranty for peace of mind
• Compatibility with smart home integration (Rinnai Controlr)

Cons

• Some customers report inconsistent temperature performance
• Professional installation is recommended for optimal results
• Higher price point compared to some other options

Andeman RV Tankless Water Heater, 55,000 BTU

Overview

The Andeman RV Tankless Water Heater is a 55,000 BTU unit that delivers 2.9 GPM of instant hot water. It features a compact 15×15-inch door design for easy installation in most RVs and campers.

Specs

• 55,000 BTU output for up to 2.9 GPM of hot water
• 12V DC and propane dual-fuel compatibility
• 15×15-inch door for space-saving installation
• Patented temperature stabilization technology
• CSA and CE certifications for safety and reliability

Pros

• Powerful 55,000 BTU output for reliable hot water
• Dual-fuel 12V DC and propane compatibility
• Compact 15×15-inch door for easy RV integration
• Patented technology for consistent temperature control
• CSA and CE certifications for quality assurance

Cons

• Lower hot water output compared to higher-BTU models
• Some customers report issues with the temperature consistency

FOGATTI RV Tankless Water Heater, InstaShower 8 Plus

Overview

The FOGATTI RV Tankless Water Heater, InstaShower 8 Plus, is a 55,000 BTU unit designed with high-altitude performance and advanced safety features. It offers 2.9 GPM of hot water and a 15×15-inch door for easy

installation.

Specs

• 55,000 BTU output for up to 2.9 GPM of hot water
• High-altitude mode for reliable operation up to 9,800 feet
• 15×15-inch door and 13×13-inch opening for universal fit
• Includes pressure relief valve, remote controller, and 15-inch door
• CSA certification and advanced safety features

Pros

• High-altitude performance for reliable use in mountainous areas
• Compact 15×15-inch door design for easy RV integration
• Includes pressure relief valve and remote controller for convenience
• CSA certification and multiple safety features for peace of mind
• Positive customer feedback on quality and functionality

Cons

• Some customers report issues with temperature consistency
• Lower hot water output compared to higher-BTU models

Buying Guide: Choosing the Best Tankless Water Heater for Your Camper

BTU Output and Flow Rate

• Consider the BTU output and flow rate (GPM) to ensure the heater can provide sufficient hot water for your needs, especially if you have multiple showers or appliances running simultaneously.
• Higher BTU ratings (e.g., 68,000 BTU) generally offer more powerful hot water delivery, while lower ratings (e.g., 55,000 BTU) may be suitable for smaller RVs or campers.

Fit and Installation

• Measure the available space in your RV or camper to ensure the tankless water heater will fit properly, as the door size is an essential consideration.
• Some models offer a more universal design, making them easier to install as replacements for existing water heaters, while others may require more customization.
• Evaluate whether the installation can be done yourself or if you’ll need a professional plumber to ensure a proper and safe setup.

Safety and Reliability

• Look for tankless water heaters with safety certifications, such as CSA or CE, to ensure they meet industry standards for safe and reliable operation.
• Consider features like flame-out protection, leak detection, and anti-freeze mechanisms to protect your RV and provide peace of mind.

Temperature Control and Performance

• Evaluate the temperature adjustment range and stability to ensure you can achieve your desired water temperature consistently.
• Review customer feedback on the heater’s ability to maintain a stable water temperature, especially when multiple fixtures are in use.

Additional Features and Accessories

• Look for tankless water heaters that come with helpful accessories, such as remote controllers, shower kits, or built-in pressure relief valves, to streamline the installation and usage experience.
• Some models offer advanced features like high-altitude modes or Wi-Fi connectivity, which can be beneficial depending on your specific needs and preferences.

FAQ

What is the difference between a tankless and a tank-style water heater for RVs?

Tankless water heaters provide instant, continuous hot water on demand, while traditional tank-style heaters store a limited amount of hot water and require time to reheat. Tankless models are generally more energy-efficient, take up less space, and offer a more consistent hot water supply.

How do I determine the right BTU output for my RV or camper?

The ideal BTU output for your tankless water heater will depend on factors like the size of your RV, the number of fixtures and appliances that will be using hot water, and your expected hot water usage. As a general guideline, 55,000-68,000 BTU is suitable for most RVs and campers.

Can I install a tankless water heater myself, or do I need a professional?

The level of expertise required for installation will depend on the specific model and your own plumbing and mechanical skills. While some DIY-savvy RV owners may be able to handle the installation, it’s generally recommended to have a licensed plumber or RV technician perform the work to ensure proper and safe integration with your RV’s systems.

How do I maintain and care for my RV tankless water heater?

Regular maintenance, such as cleaning the air intake and exhaust, checking for any leaks or damage, and periodically flushing the system, is essential to keep your tankless water heater running efficiently and safely. Be sure to follow the manufacturer’s recommended maintenance schedule and procedures.

Can I use a tankless water heater in my RV during cold weather?

Yes, many RV tankless water heaters are designed to operate in cold weather conditions and feature built-in frost protection to prevent freezing. However, it’s important to ensure the heater is installed in a well-ventilated area and that any outdoor water lines are properly insulated to avoid potential issues in extreme cold temperatures.

Conclusion

Upgrading to a tankless water heater for your RV or camper can significantly improve your hot water experience, providing endless hot water on demand, improved energy efficiency, and a more compact footprint. By considering factors like BTU output, installation requirements, safety features, and temperature control, you can find the best tankless water heater to meet your specific needs and enhance your RV lifestyle. With the information provided in this comprehensive guide, you’ll be well on your way to selecting the perfect tankless water heater for your camper or motorhome.