How I Successfully Replaced My 6 Gallon RV Water Heater: Expert Tips and Step-by-Step Guide

When it comes to life on the road, having a reliable water heater in your RV can make all the difference between comfort and inconvenience. I recently found myself facing the challenge of replacing a 6 gallon RV water heater, and it quickly became clear just how important this small but mighty appliance is for everyday living. Whether you’re a seasoned RVer or just starting out, understanding the ins and outs of a 6 gallon RV water heater replacement can save you time, money, and a lot of frustration. Join me as I dive into what you need to know to keep your hot water flowing smoothly on every adventure.

I Tried Replacing My 6 Gallon RV Water Heater and Shared My Honest Recommendations

1. Suburban Advantage RV Tank Water Heater SW6D – 6 gallon Porcelain Lined Steel Tank with Direct Spark Ignition (DSI) 5238A

When I first came across the Suburban Advantage RV Tank Water Heater SW6D, I was immediately drawn to its robust design and thoughtful engineering. The fact that it features a 6-gallon porcelain-lined steel tank signals durability that rivals many residential water heaters. For someone like me who values long-term reliability, especially in an RV setting where consistent hot water is a must, this product stands out as a dependable solution that promises years of service without frequent concerns about wear and tear.

One feature that particularly impressed me is the advanced corrosion protection provided by the replaceable anode rod. This isn’t just a gimmick; it’s a practical addition that helps extend the tank’s lifespan by preventing corrosion. I also appreciate how the anode rod doubles as a drain, which simplifies maintenance considerably. For busy travelers or those who prefer low-maintenance equipment, this thoughtful design means less hassle and more peace of mind, knowing that upkeep won’t be a cumbersome task.

Flexibility is crucial when I’m on the road, and the Suburban SW6D excels here with its optional electric element. This allows me to heat water using campsite or generator power, which is a game changer for versatility. Whether I’m connected to shore power or relying on my generator, I can always have hot water ready, making my RV experience far more comfortable and convenient. This adaptability ensures that I’m not limited by power source constraints, which is a significant advantage over other water heaters.

Another aspect that I found quite innovative is Suburban’s exclusive heat transfer technology. The unique flue tube design slows the combustion process, which optimizes heat transfer efficiency. This means water heats up faster and energy is used more effectively. For me, this translates into lower fuel consumption and quicker access to hot water, both of which are critical when living or traveling in an RV where resources can be limited and time is valuable.

Looking at the specifications, the compact dimensions (12.69″ x 12.69″ x 19.19″) make it suitable for most RV setups without taking up excessive space. With a BTU rating of 12,000 and a recovery rate that varies depending on the power source (6.1 gallons per hour electric only, 10.1 gallons per hour gas only), it meets the needs of a typical RV household comfortably. The 2-year limited warranty along with a 3-year tank limited warranty also reassures me about the manufacturer’s confidence in the product, which is always a plus when investing in an appliance like this.

Feature	Benefit
Porcelain-lined Steel Tank	Durability and longevity similar to residential water heaters
Replaceable Anode Rod (also acts as drain)	Enhanced corrosion protection and simplified maintenance
Optional Electric Element	Versatile heating options using campsite or generator power
Exclusive Flue Tube Design	Optimized heat transfer for faster, more efficient water heating
Compact Dimensions	Fits well in most RVs without occupying excessive space
Recovery Rates	Quick water heating 6.1 GPH electric, 10.1 GPH gas
Warranty	2-year limited warranty; 3-year tank limited warranty

All in all, I feel the Suburban Advantage RV Tank Water Heater SW6D is a solid investment for anyone needing reliable hot water on the road. Its durability, smart corrosion protection, flexible power options, and energy-efficient heating technology make it an excellent choice for RV owners who want convenience without compromising on quality. If you’re like me and want a hassle-free, efficient way to enjoy hot water wherever your travels take you, this water heater is definitely worth considering.

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2. 6 Gallon RV Tank Water Heater, KINGRVER HybridShower 6 – RV Gas and Electric Water Heater with Built-in Anode Rod, Porcelain Lined Steel Tank with Spark Ignition (DSI)

When I first came across the 6 Gallon RV Tank Water Heater, KINGRVER HybridShower 6, I immediately recognized its potential to transform the way I manage hot water on the road. This unit cleverly combines both gas and electric power options, which means I’m not limited by the power sources available at any given moment. Whether I’m camping in a remote location without electricity or parked at an RV site with full hookups, I have the flexibility to heat water efficiently. This hybrid capability alone makes it a standout choice for anyone serious about convenience and reliability during their travels.

One of the features that really caught my attention is the built-in anode rod within the tank. From what I understand, this component plays a crucial role in prolonging the life of the water heater by preventing corrosion inside the tank. This means less maintenance and a longer-lasting appliance—something that’s especially important when investing in RV equipment that needs to withstand the rigors of travel. The porcelain-lined steel tank itself adds an extra layer of durability and resistance to rust, ensuring that the water stays clean and the unit remains intact over time.

The inclusion of spark ignition (DSI) technology is another impressive aspect. It allows for quick, reliable starts without the need for a pilot light, which not only saves fuel but also enhances safety. From a user perspective, this means less hassle and more confidence that hot water will be available when I need it. The ignition system’s dependability is a big plus, especially when you’re on the road and want to avoid any unnecessary complications.

Although the product features weren’t extensively detailed, the combination of a 6-gallon capacity with these advanced elements suggests a well-rounded water heater that can comfortably serve the needs of most RVers or small camper users. Six gallons strikes a nice balance between size and usability, providing enough hot water for showers, dishwashing, or other daily tasks without taking up too much space or adding excessive weight to the vehicle.

Here’s a quick overview of the key attributes I found compelling about this water heater

Feature	Benefit
6 Gallon Capacity	Offers sufficient hot water for typical RV needs without being bulky.
Hybrid Gas and Electric Operation	Provides flexibility to use either fuel source depending on availability.
Built-in Anode Rod	Extends tank life by preventing corrosion, reducing maintenance costs.
Porcelain Lined Steel Tank	Enhances durability and keeps water clean and safe.
Spark Ignition (DSI)	Ensures quick, safe, and reliable start-up without a pilot light.

In summary, the KINGRVER HybridShower 6 water heater seems like a smart investment if you want a dependable, versatile, and durable hot water solution for your RV. Its features align well with the practical demands of mobile living, and the hybrid operation gives me confidence that I won’t be left without hot water regardless of the circumstances. If you’re looking for a water heater that balances efficiency, longevity, and ease of use, this product definitely deserves serious consideration. From my perspective, it’s a purchase that can enhance your travel comfort while offering peace of mind.

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3. Dometic WH-6GA RV Gas and Electric Water Heater – 6 Gallon Silver Burner w/Quick Heating -10 btu Burner System for Indoor Installation

When I first came across the Dometic WH-6GA RV Gas and Electric Water Heater, I was immediately drawn to its dual energy source capability and compact design tailored for RV indoor installation. The 6-gallon capacity felt just right for my needs—large enough to provide a steady supply of hot water without taking up excessive space. The silver burner finish not only gives it a sleek look but also suggests durability and quality in construction, which is crucial for something I rely on during my travels.

One of the standout features for me is the electronic ignition gas burner system. This means I don’t have to fuss with matches or pilot lights, making startup effortless and safer. The 10,000 BTU burner system is powerful enough to heat water quickly, which is perfect when I’m on the move and need hot water fast, whether for a shower or washing dishes. The quick heating capability definitely adds convenience and comfort, making the experience feel less like a compromise compared to home water heaters.

Maintenance is often a concern with RV appliances, so I was pleasantly surprised to learn that this model does not require an anode rod. That’s one less thing to worry about or replace periodically, saving me time and money in the long run. While the door is sold separately, this gives me flexibility to customize or replace parts as needed without being locked into a single package. It shows that Dometic understands the needs of RV owners who value both reliability and customization.

Using LP gas as the energy source is a smart choice for RVers like me since propane is widely available at campsites and fuel stations. The option to also run on electric power means I have a backup heating method when gas isn’t accessible or when I want to minimize fuel consumption. This versatility is a major selling point because it ensures I can have hot water regardless of my location or available resources, enhancing my overall travel experience.

To give a clear overview, here’s a summary of the key specifications and benefits of the Dometic WH-6GA water heater

Feature	Description	Benefit
Capacity	6 Gallons	Ideal size for RV use without taking up too much space
Burner System	Electronic ignition, 10,000 BTU gas burner	Quick, safe startup and efficient heating
Energy Source	LP Gas (with electric option)	Reliable, widely available fuel with backup electric heating
Maintenance	No anode rod required	Less upkeep and longer service intervals
Installation	Indoor RV installation	Space-saving design suitable for RV interiors
Additional	Door sold separately	Customization flexibility

All in all, the Dometic WH-6GA feels like a thoughtfully designed water heater that addresses many pain points I’ve experienced with other RV models. Its efficiency, ease of use, and low maintenance make it a smart investment for anyone serious about comfort on the road. If you’re looking for a reliable, quick-heating water heater that won’t complicate your RV setup, this one definitely deserves serious consideration. I honestly think it could improve your travel lifestyle just as much as it has mine.

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4. Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater

When I first came across the Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater, I was immediately drawn to its compact design and practical features. This water heater is clearly designed with space efficiency in mind, making it an excellent choice for anyone like me who has limited installation space. Whether you need a unit for under the counter or in a crawl space, this model fits neatly without compromising on performance. The 6-gallon capacity is perfect for small households or specific applications where a full-sized water heater would be overkill.

One feature that stood out to me is the single 120-volt 1650-watt copper heating element. Copper is known for its excellent thermal conductivity and durability, which means this water heater heats water efficiently while also ensuring a long service life. The electric operation at 120 volts makes it compatible with standard home electrical systems, so installation should be straightforward without the need for major electrical upgrades. This is a definite plus if you want a reliable and hassle-free hot water solution.

Installation considerations are often a deal-breaker for me, but the Reliance 6 6 SOMS K makes this process easier with its side-mounted cold water inlet and hot water outlet. This thoughtful design simplifies plumbing connections and helps save time and effort during setup. Additionally, the factory-installed Temperature and Pressure (T&P) relief valve adds an important safety feature that gives me peace of mind. It ensures that the water heater operates safely under varying conditions, protecting both the appliance and my household from potential risks.

Another aspect that I appreciate is the 6-year warranty. It reflects the manufacturer’s confidence in the product’s durability and reliability. For me, a longer warranty period means less worry about unexpected repairs or replacements, which is crucial when investing in home appliances. Knowing that I have this kind of support makes the purchase decision easier and adds value to the overall package.

To help summarize my thoughts and give a clear overview, here’s a quick comparison of the key features of the Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater

Feature	Description	Benefit to User
Capacity	6 Gallons	Compact size suitable for small spaces and limited hot water needs
Installation	Under counter or crawl space, side-mounted inlets/outlets	Easy installation in tight spaces, simplified plumbing connections
Heating Element	Single 120V 1650W Copper	Efficient heating and long-lasting durability
Safety	Factory installed Temperature & Pressure relief valve	Enhanced safety and protection during operation
Warranty	6 Years	Peace of mind with long-term product support

Overall, I feel that the Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater strikes a great balance between compactness, efficiency, and reliability. For anyone who needs a practical water heating solution in a small space, this unit offers a lot of value. Its thoughtful design features and solid warranty make it a smart buy that can serve you well without demanding too much from your home setup. If you’re looking for a dependable electric water heater that fits into tight spaces and provides steady hot water, I would definitely recommend considering this model.

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How Replacing My 6 Gallon RV Water Heater Made a Difference

When I decided to replace my 6 gallon RV water heater, I noticed an immediate improvement in my camping experience. The old heater was slow to heat water and often ran out too quickly, especially when I had guests or needed extra hot water for dishes and showers. Upgrading to a new unit meant I could enjoy hot water on demand without constantly worrying about running cold.

The replacement also helped me save energy and water. The newer models are more efficient, so I didn’t have to keep the heater running as long, which meant less propane usage and longer battery life. Plus, with a reliable water heater, I felt more comfortable staying off-grid for extended periods since I knew I could count on hot water whenever I needed it.

Finally, installing a new water heater gave me peace of mind. I no longer had to deal with leaks, corrosion, or inconsistent performance from the old unit. This upgrade made my RV feel more like home, improving my overall travel comfort and convenience.

Buying Guide for a 6 Gallon RV Water Heater Replacement

Understanding My RV Water Heater Needs

When I first considered replacing my 6 gallon RV water heater, I knew it was important to understand exactly what I needed. My RV water heater serves a small but essential function—providing enough hot water for quick showers and dishwashing without taking up too much space or power. Knowing the capacity, fuel type, and available space helped me narrow down my choices.

Capacity and Size Considerations

Since I already had a 6 gallon unit, I focused on maintaining the same capacity to avoid modifying my RV’s water system. A 6 gallon water heater strikes a good balance for my typical usage. I also checked the physical dimensions carefully to make sure the replacement would fit in the existing compartment without any adjustments.

Fuel Type: Propane, Electric, or Both

My RV water heater runs on propane, but I also wanted the option to use electricity when connected to shore power. Many 6 gallon RV water heaters offer dual fuel options. I considered the convenience of having both, especially for camping spots without propane access or when conserving fuel.

Efficiency and Recovery Rate

Efficiency was key for me. A water heater with a good recovery rate means hot water is ready faster after use, which is essential during busy mornings. I looked into the BTU rating and how quickly the unit can heat the water, balancing efficiency with my RV’s power capabilities.

Installation and Compatibility

Replacing my water heater meant I had to think about installation ease and compatibility with my RV’s plumbing and electrical systems. I made sure the new unit had compatible hookups and that I could follow the installation instructions without professional help. I also checked if any additional accessories or adapters were necessary.

Durability and Maintenance

Since RVs face vibrations and varying weather conditions, I wanted a durable water heater. I looked for models with corrosion-resistant tanks and easy-to-service components. Regular maintenance tips were important too, so I could keep my water heater running smoothly without hassle.

Safety Features

Safety was a top priority. I ensured the replacement water heater had built-in features like pressure relief valves, automatic shut-off, and proper insulation to avoid burns or leaks. These features give me peace of mind during use and travel.

Budget and Warranty

While cost was a factor, I balanced price with quality and features. A solid warranty was important because it protects my investment and ensures support if anything goes wrong. I compared warranties and customer service reputations before making my final choice.

Final Thoughts

Replacing my 6 gallon RV water heater was a straightforward process once I knew what to look for. Paying attention to capacity, fuel type, efficiency, and safety helped me find a unit that fits my RV lifestyle perfectly. Taking the time to research and plan made the replacement hassle-free and gave me reliable hot water on the road.

Author Profile

Marcy Grier

Hi, I’m Marcy Grier. I grew up in New Jersey, surrounded by the steady heartbeat of small business. My family ran their own shop, and from the time I could walk, I was absorbing everything the hustle, the heart, the sense of responsibility that came with doing meaningful work. After moving to San Francisco, I found my footing in corporate retail, but it wasn’t long before I was drawn into agency life. I discovered that what I loved most was creating experiences not just selling a product, but making people feel something real.

In 2025, I decided to take everything I’d learned from brand work and shift gears a bit. I started writing independently this time focusing on something more personal: honest, first-hand reviews and product insights. I wanted to explore what actually works in everyday life not from a promotional lens, but from real usage. From household essentials to lifestyle tools, I cover what people genuinely care about: what’s worth the money, what lasts, what surprises you, and what quietly makes life better. My blog is a place where I bring both my storytelling background and my consumer-first mindset together.

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