Finding the best tankless water heater for your RV involves balancing performance, size, and ease of installation. The Tankless Water Heater for RVs, High Altitude, Propane, 12V DC stands out as the best overall choice for reliable performance in various conditions. FOGATTI InstaShower 7 offers a compact, budget-friendly option ideal for quick upgrades, while the APUS RV Tankless Water Heater provides a high flow rate for larger RVs or families. The main tradeoffs involve balancing power, size, and upfront cost—more powerful units tend to be bulkier and more expensive, but deliver faster hot water. Keep reading for a detailed breakdown to help you make the best choice for your RV needs.
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Key Takeaways
- The top-ranked models excel in reliability and ease of installation compared to less established brands.
- Higher BTU ratings generally mean faster hot water delivery, but can increase size and power requirements.
- Propane-powered units dominate the market, offering flexibility in remote or off-grid locations, though they vary in efficiency.
- Compact models are ideal for smaller RVs or those with limited space, but may have lower flow rates.
- Price often correlates with features like remote control, high-altitude operation, and advanced safety features—balance these with your budget.
| Tankless Water Heater for RVs, High Altitude, Propane, 12V DC |  | Best Overall for High-Performance RV Hot Water | Power Source: Liquid Propane | Maximum Temperature: 124 °F | Heat Output: 60000 BTU per hour | VIEW LATEST PRICE | See Our Full Breakdown |
| FOGATTI InstaShower 7 RV Tankless Propane Water Heater |  | Best for Instant Hot Water in Busy RVs | Flow Rate: 2.5 gallons per minute | BTU Heat Output: 48,000 BTU | Max Pressure: 150 PSI | VIEW LATEST PRICE | See Our Full Breakdown |
| FOGATTI InstaShower 8 Plus RV Tankless Water Heater, Propane, 12V DC, Black |  | Best for Continuous Hot Water and RV Compatibility | Power: 55,000 BTU | Flow Rate: up to 2.9 GPM | Dimensions: 15 x 15 inches door, 13 x 13 inches opening | VIEW LATEST PRICE | See Our Full Breakdown |
| RV Tankless Water Heater 12V, 65,000 BTU Propane Powered Instant Hot Water with Lockable Door & Remote |  | Best for Off-Grid and Security-Conscious RVers | Flow Rate: 3.9 GPM | BTU: 65,000 | Power: 12V | VIEW LATEST PRICE | See Our Full Breakdown |
| 65,000 BTU RV Tankless Water Heater, DC 12V, 15×15 inch White Door |  | Best Compact and High-Performance for Small Spaces | Power Source: Propane | Voltage: 12 volts DC | Heat Output: 65000 BTU per hour | VIEW LATEST PRICE | See Our Full Breakdown |
| APUS RV Tankless Water Heater, Propane, 68,000 BTU, 3.9 GPM, White Door |  | Best Overall for Power and Compact Design | Power Source: Liquid Propane | Flow Rate: 3.9 GPM | Maximum Temperature: 124°F | VIEW LATEST PRICE | See Our Full Breakdown |
| RV Tankless Water Heater, 65,000 BTU Dual-Outlet Instant Camper Hot Water Heater with Controller |  | Best for Versatility and Dual Hot Water Outlets | BTU: 65,000 | Flow Rate: 3.9 GPM | Temperature Range: 95–123°F | VIEW LATEST PRICE | See Our Full Breakdown |
| ORBEK RV Tankless Water Heater, Propane, 12V DC, for RV and Camper |  | Best for High-Altitude Use and Remote Operation | BTU: 60,000 | Power Supply: 12V DC | Water Connection: Standard NPT | VIEW LATEST PRICE | See Our Full Breakdown |
| tankless water heaters for RV | Flow Rate |
|---|---|
| Tankless Water Heater for RVs | — |
| FOGATTI InstaShower 7 RV Tankl | 2.5 gallons per minute |
| FOGATTI InstaShower 8 Plus RV | up to 2.9 GPM |
| RV Tankless Water Heater 12V | 3.9 GPM |
| 65,000 BTU RV Tankless Water H | — |
| APUS RV Tankless Water Heater | 3.9 GPM |
| RV Tankless Water Heater | 3.9 GPM |
| ORBEK RV Tankless Water Heater | — |
More Details on Our Top Picks
Tankless Water Heater for RVs, High Altitude, Propane, 12V DC
This model stands out for its high efficiency and strong heat output of 60,000 BTU, making it ideal for those who prioritize rapid hot water delivery in larger or busy RVs. Compared with the FOGATTI InstaShower 8 Plus, it offers a more compact design but lacks the high-capacity continuous flow feature. Its safety features, including anti-freezing and leak detection, add peace of mind, though installation requires some technical know-how and propane access. This pick is best suited for frequent travelers needing robust performance without sacrificing safety or ease of installation.
Pros:- High efficiency with 60,000 BTU heating capacity
- Easy to install with standard RV fitments
- Includes safety features like leak detection and freeze protection
- Compact and lightweight design
Cons:- Requires propane fuel and 12V power supply
- Limited to RV applications, not suitable for home use
Best for: RVers needing high heat capacity and reliable operation in cold climates
Not ideal for: Casual campers or those seeking electric-only solutions, as it requires propane and 12V power
- Power Source:Liquid Propane
- Maximum Temperature:124 °F
- Heat Output:60000 BTU per hour
- Maximum Pressure:150 psi
- Item Dimensions:17.6″ W x 19.1″ H
- Material Type:Copper, Stainless Steel
- Special Features:24 Months Warranty, Anti-Freezing Protection, Dry Combustion Protection, Leak Detection, Remote Control Included
Our verdict“This heater is perfect for RV owners who need powerful, reliable hot water in cold, high-altitude conditions.”
FOGATTI InstaShower 7 RV Tankless Propane Water Heater
The FOGATTI InstaShower 7 excels at providing immediate hot water with a flow rate of 2.5 gallons per minute, making it a great choice for families or groups that need quick showers. Its high-altitude operation capability up to 9,800 feet surpasses many competitors like the 65,000 BTU RV Water Heater, which lacks high-altitude performance. The remote control and safety features add convenience, though the need for separate installation of mounting and door options can complicate setup. This heater is best for those who want rapid, reliable hot water without long wait times.
Pros:- Instant hot water with no waiting time
- High-altitude operation suitable up to 9,800 ft
- Remote control for easy temperature adjustments
- CSA certified with multiple safety features
Cons:- Requires separate installation of compatible door options
- Limited to propane fuel, not electric
Best for: Families or groups who need quick hot water with high-altitude capability
Not ideal for: DIY beginners or RV owners seeking electric-powered models, due to installation complexity and propane reliance
- Flow Rate:2.5 gallons per minute
- BTU Heat Output:48,000 BTU
- Max Pressure:150 PSI
- Remote Control Length:6.6 ft
- Temperature Range:95°F to 123°F
- High Altitude Operation:Yes (up to 9,800 ft)
Our verdict“Ideal for high-altitude RVers who prioritize instant hot water and safety features over installation simplicity.”
FOGATTI InstaShower 8 Plus RV Tankless Water Heater, Propane, 12V DC, Black
The FOGATTI InstaShower 8 Plus offers over 40 minutes of continuous hot water, making it suitable for multiple showers or extended outdoor use. Its high-altitude compatibility and CSA certification distinguish it from basic models like the 65,000 BTU RV Water Heater, which may not handle prolonged usage as well. The unit’s built-in safety features and ability to fit various RV models make it a versatile replacement, but installation can be complex for those unfamiliar with retrofit projects. This option makes the most sense for RVers who want dependable, ongoing hot water with safety assurance.
Pros:- Provides continuous hot water for over 40 minutes
- High-altitude ready with staged combustion technology
- Compatible with various RV models for easy replacement
- Built-in safety features including automatic shut-off
Cons:- Requires proper installation and retrofit
- Relies on propane, which may not suit electric-only RVs
Best for: RVers needing extended hot water supply and high-altitude operation
Not ideal for: DIY novices or those without proper installation space, due to complexity and retrofit needs
- Power:55,000 BTU
- Flow Rate:up to 2.9 GPM
- Dimensions:15 x 15 inches door, 13 x 13 inches opening
- Voltage:12V DC
- Certifications:CSA certified
Our verdict“Best suited for RV owners who need long-lasting hot water and reliable safety features in high-altitude environments.”
RV Tankless Water Heater 12V, 65,000 BTU Propane Powered Instant Hot Water with Lockable Door & Remote
This heater provides quick, continuous hot water with a flow rate of 3.9 GPM and a powerful 65,000 BTU output, making it suitable for larger families or outdoor enthusiasts. Its durable copper heat exchanger and lockable door add robustness and security, while the remote control simplifies temperature adjustments. Compared to smaller models like the InstaShower 8 Plus, it delivers higher flow rates but requires careful installation and proper ventilation, especially in off-grid setups. It is a solid choice for RVers who need high capacity and rugged durability in remote conditions.
Pros:- Instant and high-volume hot water up to 3.9 GPM
- Durable copper heat exchanger for harsh conditions
- Includes lockable door and remote for security and convenience
- Automatic ignition and propane-saving features
Cons:- Requires proper ventilation and installation skills
- Limited to RV and off-grid use
Best for: Off-grid campers and RVers needing high flow rates with secure operation
Not ideal for: Casual RV users or those with limited installation space, due to size and ventilation needs
- Flow Rate:3.9 GPM
- BTU:65,000
- Power:12V
- Temperature Control:±1°F
Our verdict“This heater fits RV owners who prioritize high flow rates, durability, and security in off-grid environments.”
65,000 BTU RV Tankless Water Heater, DC 12V, 15×15 inch White Door
The 65,000 BTU RV Tankless Water Heater combines high capacity with compact size, making it ideal for tight spaces in smaller RVs or for those who want powerful performance without bulk. Its quick hot water output supports multiple showers, and its safety features like anti-freezing protection are suitable for varied climates. Compared with larger units like the Tankless Water Heater for RVs, High Altitude, it sacrifices some capacity for easier installation and portability. This model makes sense for RVers who need a balance of power and space efficiency.
Pros:- Provides instant hot water suitable for multiple showers
- High BTU output with high-altitude performance features
- Compact, lightweight, and easy to install
- Includes safety protections like freeze and overheat shut-off
Cons:- Requires propane fuel, not electric
- Limited capacity of 10 gallons may not meet very high demand
Best for: RVers with limited space requiring reliable, high BTU hot water on demand
Not ideal for: High-demand households or those wanting larger capacity tanks, as it’s limited to 10 gallons
- Power Source:Propane
- Voltage:12 volts DC
- Heat Output:65000 BTU per hour
- Maximum Temperature:123°F
- Maximum Pressure:150 psi
- Item Dimensions:15″ W x 15″ H
Our verdict“This heater is well-suited for space-conscious RVers who need reliable hot water with high capacity in a compact form.”
APUS RV Tankless Water Heater, Propane, 68,000 BTU, 3.9 GPM, White Door
This unit stands out for its impressive 68,000 BTU output combined with a 3.9 GPM flow rate, making it suitable for larger RVs that need reliable, on-demand hot water. Compared to the ORBEK model, which also offers propane heating but with slightly lower BTU, the APUS provides a higher power reserve, translating into faster recovery times. Its compact size fits well into most standard RV compartments, and safety certifications enhance reliability. However, it requires both propane and 12V power, which could complicate installation for some users. This pick makes the most sense for RV owners seeking high output in a space-efficient package, willing to handle a potentially more involved setup process.
Pros:- High 68,000 BTU output for quick hot water recovery
- Compact size fits most RV compartments
- Safety certifications and intelligent temperature control
Cons:- Requires both propane and 12V DC power, complicating setup
- Installation can be complex for DIYers
- Limited to RV use, not suitable for household plumbing
Best for: Owners of larger RVs or those frequently traveling with multiple water users who need high flow and quick recovery.
Not ideal for: Solo travelers or weekend campers with small setups who won’t utilize the high BTU capacity or face installation challenges.
- Power Source:Liquid Propane
- Flow Rate:3.9 GPM
- Maximum Temperature:124°F
- Wattage:21 watts
- Voltage:12 volts DC
- Item Dimensions:14.18″ W x 15″ H
Our verdict“This unit is ideal for larger RVs needing dependable, high-capacity hot water with a space-efficient design, despite installation complexity.”
RV Tankless Water Heater, 65,000 BTU Dual-Outlet Instant Camper Hot Water Heater with Controller
This model is tailored for RV owners who value flexibility, offering dual outlets and a solid 65,000 BTU for efficient hot water delivery. Its ability to serve two points simultaneously sets it apart from single-outlet options like the APUS, making it perfect for families or groups. Its energy-efficient on-demand operation and freeze protection enhance usability in various climates. However, proper installation and ventilation are critical, and the need for a 12V power source might challenge DIY setups. This heater suits those wanting to supply hot water to multiple fixtures without sacrificing performance, provided they can handle a more involved setup.
Pros:- Dual outlets enable simultaneous hot water use
- High 65,000 BTU for fast recovery
- Energy-efficient on-demand operation and freeze protection
Cons:- Requires proper installation and ventilation
- May be complex for DIY installation
- Dependent on 12V power supply
Best for: Families or groups in RVs who need simultaneous hot water outlets and reliable freeze protection in colder conditions.
Not ideal for: Single-user travelers with minimal water demands or owners seeking the simplest installation with minimal setup steps.
- BTU:65,000
- Flow Rate:3.9 GPM
- Temperature Range:95–123°F
- Power:12V DC
- Dimensions:15×15 inches
- Fuel Nozzle:1.22 mm
Our verdict“This heater excels for multi-user RV setups needing versatile hot water delivery, with some installation considerations.”
ORBEK RV Tankless Water Heater, Propane, 12V DC, for RV and Camper
The ORBEK model offers a solid 60,000 BTU propane burner, tailored for remote or high-altitude RV use up to 9,800 feet. Its ability to operate efficiently in cold environments and with high-altitude conditions makes it a standout for off-grid adventurers. The addition of a smart remote control adds convenience, and safety protections contribute peace of mind. Compared with the APUS, which emphasizes high flow rate and compact size, the ORBEK prioritizes adaptability to challenging environments, though it comes with a higher initial cost and requires proper cutout dimensions during installation. This heater is best for users who need reliable hot water in tough conditions and are comfortable with propane and remote operation.
Pros:- Provides continuous hot water with efficient propane use
- Suitable for high-altitude environments up to 9,800 feet
- Easy to install and operate with remote control
Cons:- Requires proper cutout size for installation
- Dependent on propane supply and 12V power
- Higher initial cost compared to traditional models
Best for: RV travelers exploring high-altitude or cold-weather regions, needing consistent hot water with remote control features.
Not ideal for: Casual RVers or those with limited space who prefer plug-and-play electric models, as installation space and propane setup are critical.
- BTU:60,000
- Power Supply:12V DC
- Water Connection:Standard NPT
- Temperature Range:95°F to 123°F
- Pressure-Reducing Valve:150 PSI
- Safety Certifications:CSA
Our verdict“This heater is well-suited for RV owners venturing into high-altitude or cold climates who value remote operation and reliable performance.”
How We Picked
The products were selected based on a combination of performance metrics, build quality, user reviews, and versatility. Key factors included heating capacity (BTU), flow rate (GPM), ease of installation, and suitability for RV use in different environments. We prioritized models that balance power with size and energy efficiency, ensuring they deliver consistent hot water without excessive complexity or cost. The ranking reflects a mix of top-tier performance and practical value, aiming to guide both casual campers and full-time RVers to the best fit for their needs.Factors to Consider When Choosing Best Tankless Water Heaters For RVs
Choosing the ideal tankless water heater for your RV requires considering several factors beyond just BTU and price. Understanding your specific needs—such as water demand, space constraints, and power sources—will help narrow down your options. This guide explores key considerations to help you select a model that balances performance, size, and cost, avoiding common pitfalls like underestimating water flow requirements or overpaying for unnecessary features.Flow Rate and Heating Capacity
Matching the flow rate (GPM) to your household size and hot water needs is critical. Larger families or those using multiple fixtures simultaneously will benefit from higher BTU ratings and flow capacities, ensuring hot water availability when needed. Conversely, smaller RVs or solo travelers may prioritize compact models with lower flow rates that still meet their daily needs. Overestimating capacity can lead to unnecessary expense and size, while underestimating can result in cold surprises during peak usage.
Power Source Compatibility
Most RV tankless water heaters are propane-powered, offering flexibility and independence from electrical hookups. However, some models also support DC or AC power, which can be advantageous for off-grid camping or when solar power is available. Ensure your RV’s electrical system can support the heater’s power requirements; installing a unit with incompatible power demands can cause operational issues or safety concerns. Also, consider units with high-altitude operation if you frequently camp in mountain areas.
Size and Installation
Space constraints are a common challenge in RV setups. Compact models are designed to fit into tight spaces, but may sacrifice some capacity or features. Proper measurement and understanding of your RV’s available installation area will prevent costly adjustments later. Additionally, some units are easier to install DIY, while others may require professional help, especially for venting and propane connections. Choosing a model with flexible mounting options can simplify the process.
Efficiency and Durability
Look for units with good energy efficiency ratings and corrosion-resistant components, which extend lifespan and reduce operational costs. Features like digital thermostats and safety shut-offs add to longevity and peace of mind. Cheaper models might save money upfront but could require more maintenance or have shorter lifespans. Investing in a durable, well-made unit often pays off over time, especially for frequent travelers.
Budget and Features
Price varies widely based on capacity, brand, and added features like remote control or high-altitude operation. While budget models can suffice for casual use, frequent or heavy users may find value in higher-end units that offer faster heating, greater capacity, and advanced safety features. Balancing your budget with your hot water needs will help avoid overpaying or ending up with a model that underperforms during critical moments.
Frequently Asked Questions
Will a tankless water heater work in cold weather or high-altitude conditions?
Many tankless water heaters are designed to operate effectively in cold weather and at high altitudes, but not all models are suitable. Check if the unit specifically mentions high-altitude operation or cold-weather performance. Units with higher BTU ratings and some with insulated components tend to perform better in challenging climates. If you frequently camp in such conditions, investing in a model with these features can prevent performance issues and cold water surprises.
How difficult is it to install a tankless water heater in an RV?
Installation difficulty varies depending on the model and your RV setup. Some units are designed with DIY installation in mind, featuring straightforward mounting and plug-and-play connections. Others, especially those requiring venting or complex propane connections, may need professional help. Carefully review your RV’s existing plumbing and electrical systems, and select a model that matches your technical comfort level. Proper installation is essential for safety and performance.
Can I upgrade my existing RV water heater to a tankless system?
Upgrading to a tankless water heater is possible but depends on your RV’s existing plumbing, available space, and power sources. You’ll need to ensure the new unit fits physically and can connect properly to your water lines and propane supply. Some RVs may need modifications or additional venting, which can add to installation costs. Consulting with a professional can help determine if your current setup can support a tankless system and what modifications are required.
What is the typical lifespan of a tankless water heater in an RV?
Most tankless water heaters designed for RV use last between 10 and 20 years with proper maintenance. Regular flushing to remove mineral buildup, especially in hard water areas, is vital for longevity. Choosing a high-quality, corrosion-resistant model can extend its lifespan further. Keeping up with routine inspections and replacing worn-out parts when needed will help ensure your investment continues to perform reliably over the years.
Is a higher BTU rating always better for an RV water heater?
Not necessarily; a higher BTU rating provides faster hot water delivery but also demands more power and space. For small RVs with limited space and lower hot water needs, a high BTU unit might be overkill and less efficient. Conversely, larger RVs or those with multiple occupants benefit from higher capacity models to meet simultaneous demands. Carefully match the BTU rating to your usage pattern to avoid unnecessary expense and installation complexity.
Conclusion
For most RV owners, the Tankless Water Heater for RVs, High Altitude, Propane, 12V DC offers a reliable, all-around solution with broad compatibility. The FOGATTI InstaShower 7 makes a strong case for budget-conscious travelers or those prioritizing simplicity, while the APUS RV Tankless Water Heater suits larger families or full-timers needing higher flow rates. If you’re seeking premium features and maximum durability, a higher-end model with advanced safety and efficiency will serve well. Ultimately, your choice depends on your RV size, climate, usage habits, and budget—keep those factors front and center as you decide.Fall Picks
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