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How to Choose the Best RV Water Heater for Your Travels
When it comes to comfort on the road all year round, few things matter more than a reliable hot water supply.
Whether you're rinsing off after a long hike, doing the dishes, or just unwinding with a warm shower, your RV water heater makes all the difference.
Without it, you'd be stuck with an icy wake-up call you didn’t ask for.
In this comprehensive guide, I'll walk you through everything you need to know about selecting the perfect RV water heater for your specific needs, based on decades of experience (both professional and personal, successes and failures!)
Top RV Water Heaters Worth Considering in 2025
It’s a pretty saturated market, and knowing which of the countless products and brands are best can be confusing – even when you’ve considered each of the elements above.
To narrow it down a bit, here are some of my top picks for this year:
The Suburban 5247A represents what I consider to be the gold standard in traditional tank-style RV water heaters. This six-gallon model features both propane and electric heating options, giving you maximum flexibility regardless of your camping situation.
What makes this model stand out is its impressive recovery rate of approximately 12 gallons per hour when using propane, meaning you'll spend less time waiting for hot water.
The direct spark ignition eliminates the need for a pilot light, saving propane and reducing maintenance headaches.
I've installed this model in several RVs over the years and have always been impressed by its reliability and consistent performance, even in cold weather conditions. The standard door size makes it a direct replacement for many existing water heaters, simplifying the upgrade process.
Buy Suburban 5247A Direct Spark/Electric Water Heater
For larger RVs or families with higher hot water demands, the Dometic 95001SP offers an impressive 10-gallon capacity. This additional volume makes a significant difference when multiple people need to shower consecutively.
The electronic ignition system provides reliable starts even in windy conditions, and the model's combination of durability and efficiency has made it a favorite among full-time RVers I've encountered on my travels. Its motor-aid heat exchanger efficiently uses engine heat to warm water while driving, saving propane and providing hot water upon arrival at your destination.
The Dometic's robust construction and thoughtful design features, like its efficient insulation that helps maintain water temperature, make it worth considering for anyone looking to maximize their hot water capacity.
Buy Dometic 95001SP Water Heater
GE has brought its home appliance expertise to the RV market with impressive results. The PR10DSATBA combines a generous 10-gallon capacity with dual fuel capabilities, providing reliable performance regardless of your power source.
What distinguishes this model is its precise temperature control and excellent energy efficiency, even when compared to other tank models. The premium anode rod protection helps extend the tank's lifespan by preventing corrosion – a critical consideration for long-term value.
I've found this model particularly well-suited for seasonal RVers who may leave their units sitting for extended periods, as its robust construction and corrosion resistance help prevent common storage-related issues.
GE Appliances PR10DSATBA 10G Dual Fuel Gas/Electric RV Water Heater
For those ready to embrace the tankless revolution, the GE GE04SNLPDG represents the cutting edge of RV water heating technology. This wall-mounted electric unit delivers consistent hot water while occupying minimal space.
With a flow rate of approximately 2.0 GPM (gallons per minute), it easily handles typical RV shower and sink needs simultaneously. The digital temperature display and adjustable settings allow precise control over your water temperature – a luxury my family particularly appreciates.
I installed this model on my own RV last year, and the endless hot water has completely transformed our camping experience. While the initial investment was higher than a traditional tank heater, the space savings, reduced propane usage, and convenience of never running out of hot water have made it worthwhile.
GE GE04SNLPDG Electric Tankless RV Water Heater
Understanding RV Water Heater Types and Technologies
Before we dive in, let’s get to grips with the two main RV water heater types and the technologies deployed by each.
Tank-Style Water Heaters: The Traditional Approach
Tank-style water heaters remain the most common option in RVs today, and for good reason. These units typically hold between 6 to 10 gallons of water and heat the entire tank at once.
- They're available in gas (propane), electric, or combination models that offer flexibility
- Recovery time typically ranges from 20-30 minutes after depleting the hot water
- They have an average lifespan of 8-12 years with proper maintenance
- Installation is generally straightforward as most RVs are designed with these units in mind
Tankless Water Heaters: Endless Hot Water on Demand
The newer technology that's gaining popularity in the RV world is tankless water heaters. These compact units heat water instantly as it flows through the system, providing several distinct advantages:
- They deliver continuous hot water as long as you have a water and power supply
- Their compact design frees up valuable storage space in your RV
- While more expensive initially, their typical lifespan of 15-20 years offers long-term value
- They're highly energy-efficient since they only heat water when needed
Critical Factors to Consider When Choosing Your RV Water Heater
Energy Source Compatibility
Your RV's existing systems will partially dictate your water heater options:
- LP Gas (Propane): The most versatile option, providing reliable heating regardless of hookups
- Electric: Convenient when connected to shore power but unusable while boondocking without substantial battery/solar capacity
- Combination Systems: Offer maximum flexibility but typically come at a higher price point
I’ve always preferred combination systems for the adaptability they provide. Being able to switch between propane when boondocking and electricity when at a campground with hookups gives you the best of both worlds.
Capacity Requirements Based on Usage Patterns
Be realistic about your hot water needs when selecting a capacity:
- Small RVs (1–2 people): A 4 to 6 gallon tank is typically sufficient
- Medium RVs (3–4 people): Look for 6 to 10 gallon capacity
- Large RVs or families (5+ people): Consider either a 10+ gallon tank or a tankless system
Remember that your camping style also matters. If you're primarily staying at developed campgrounds with shower facilities, your onboard hot water demands will likely be lower than if you're boondocking and relying entirely on your RV's systems.
Recovery Rate and Performance
The recovery rate – how quickly your water heater can warm a fresh tank of cold water – becomes crucial during high-usage periods:
- Standard recovery: 8–10 gallons per hour
- High-performance: 12+ gallons per hour
In my experience, a faster recovery rate is worth the investment, particularly if multiple people will be using hot water consecutively.
Installation Considerations
Before purchasing any water heater, verify:
- The dimensions match your existing cutout (or you're prepared to modify it)
- Your RV's electrical system can handle the amp draw of an electric model
- Proper venting is available for gas models
- You have the skills for installation or budget for professional help
I've learned the hard way that assumptions about component fit can lead to frustrating installation experiences. Measure twice, order once!
Cost Considerations: Making a Smart Investment
RV water heaters represent a significant investment, and understanding the full cost picture helps with decision-making.
When looking at tank-style systems, you'll find basic models typically range from $300–$500 for the unit alone, while premium units with advanced features and greater durability can run $600–$900.
If you're not comfortable with DIY installation, professional service will add another $200–$400 to your total cost depending on the complexity of your RV's setup and any modifications needed.
Tankless systems sit at a higher price point, with entry-level models starting around $700–$900 and premium options with higher flow rates and additional features reaching $1,000–$1,500.
Installation costs also tend to be higher for these units, generally $400–$600, due to the additional complexity of electrical work and potential modifications to accommodate the different form factors.
However, I've found this higher initial investment often makes economic sense in the long run.
Making Your Final Decision
- Assess your typical usage pattern – How many people use hot water, and how often?
- Consider your camping style – Do you primarily use hookups or boondocks?
- Evaluate your budget – Both initial purchase and long-term operating costs
- Think about available space – Could a tankless unit free up valuable storage?
- Plan for maintenance – Are you comfortable with DIY service, or will you need professional help?
By thoughtfully considering these factors, you'll be able to select a water heater that aligns with your specific needs and provides years of reliable service.
Ready for Reliable Hot Water, Wherever You Are?
Discover the perfect balance of comfort and efficiency with our expert-backed guide to RV water heaters, combining 20+ years of hands-on experience with technical insights to transform your camping experience with reliable hot water wherever you travel.
About the Author
I’m Bill Rowell, the founder of RVupgrades.com. In 2002, I launched the business to help fellow RV enthusiasts find unique and hard-to-find products. Over the years, it’s grown to offer more than 15,000 items, with a warehouse in Eastlake, Ohio. Having owned and repaired nearly every type of RV, I bring over two decades of hands-on experience to the table. For me, this isn’t just a business—it’s a passion and a way of life that I love sharing with the RV community.
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