A Comprehensive Guide to RV Water Heater Replacement

When it comes to life on the road, there’s nothing quite like having hot water at your fingertips. Whether you’re washing dishes, taking a shower, or just cleaning up, a reliable water heater is one of those luxuries that quickly feels like a necessity. 

For RVers, the process of choosing the right replacement RV water heater can be daunting, especially with so many options on the market. In this guide, we’ll walk you through the essential factors to consider, from deciding between tank and tankless models to exploring fuel types and installation methods. By the end, you’ll have all the insights you need to confidently choose the best RV water heater replacement for your needs. 

1. Benefits of Upgrading to a New RV Water Heater
2. Hot Water Heater Options to Consider
3. Considerations for Installation
4. Installation Process Overview
5. Furrion Tankless RV Water Heaters
6. Girard Tankless RV Water Heaters
7. FAQs About RV Water Heater Replacement

Before we get into the nitty gritty of hot water heater options, it’s important to understand the reasons why some RVers choose to upgrade their water heater. Upgrading to a new RV water heater can significantly enhance your overall camping experience. Whether you're replacing an outdated model or transitioning from a tank to a tankless system, the benefits are numerous. Here are some key advantages to consider: 

Modern RV water heaters are designed with advanced technology that maximizes efficiency. Tankless water heaters, for instance, only heat water on demand, meaning you’re not wasting energy by constantly heating a large tank of water. Additionally, many new units are engineered to work with both propane and electric sources, allowing you to choose the most efficient option based on your specific needs and available resources. 

One of the standout benefits of tankless RV water heaters is their ability to provide hot water almost instantaneously. Traditional tank models can take time to refill and reheat after use, leading to frustrating waits, especially for larger families or friend groups. With a tankless model, you can enjoy continuous hot water flow, making showering, dishwashing, and laundry tasks quicker and more convenient.  

Newer RV water heaters come equipped with a range of advanced safety features designed to protect users and enhance overall reliability. For example, many modern models include pressure relief valves, over-temperature protection, and flame indicators to ensure safe operation. Upgrading to a new unit not only enhances your comfort but also instills confidence in the safety of your hot water system, allowing you to focus on enjoying your adventures rather than worrying about potential hazards. 

When considering an RV water heater replacement, it's essential to familiarize yourself with the range of options out there. The right choice for your vehicle will depend on your needs, preferences, and budget. 

When choosing between tankless and tank-style RV water heater replacement options, each type comes with distinct advantages suited to different lifestyles on the road. Traditional tank water heaters heat and store water in a tank, typically between 6 and 10 gallons, which is readily available but limited by the tank size. These units work well for RVers who use hot water sparingly or take short showers, as the tank will need time to refill and reheat once depleted.  

On the other hand, tankless water heaters have become increasingly popular due to their efficiency and ability to provide on-demand hot water. Instead of heating a limited quantity, tankless systems instantly heat water as it flows through the unit. Here are some key points to consider:

• Continuous Hot Water: Tankless systems can supply unlimited hot water, ideal for families or anyone who enjoys longer showers. 
• Space-Saving Design: Tankless units are generally more compact than their tank counterparts, freeing up precious storage space. 
• Higher Initial Cost, Lower Operating Cost: While they often have a higher upfront cost, tankless heaters can be more economical over time, as they only heat water when needed, saving fuel or electricity. 
• Installation Considerations: Some RVs may need slight modifications to accommodate tankless models, though many brands now offer retrofit options. 

For RVers who want the comfort of endless hot water, tankless heaters are often the superior choice, making them an excellent option for a replacement RV water heater. 

Choosing the right power source for your RV water heater replacement depends on your camping style, available hookups, and fuel preferences. Each power source comes with its pros and cons: 

• Electric: Electric RV water heaters are convenient if you frequently camp with hookups. They run quietly and are efficient when connected to shore power, making them a popular choice for campgrounds with full amenities. However, electric models may struggle to heat water as quickly as gas options, and they can drain batteries quickly when boondocking. 
• Gas (Propane): Gas-powered RV water heaters are versatile and ideal for both campgrounds and off-grid camping. Propane is readily available and efficient, making it an excellent option for heating water quickly. Many propane models also come with automatic ignitions for easy startup. However, gas heaters can sometimes require additional ventilation and periodic maintenance to keep the gas lines clear and safe. 
• Dual-Fuel (Electric and Gas): Dual-fuel water heaters offer the best of both worlds by allowing you to switch between electric and propane, depending on your power source. This versatility makes dual-fuel heaters a great option if you frequently alternate between campgrounds and remote locations. They’re highly adaptable but tend to be pricier than single-fuel models. 
• Other Fuel Types (Diesel, Engine Heat Exchange): Some advanced RV water heaters use diesel or engine heat exchanges for heating. Diesel models are efficient for motorhomes that already use diesel for other appliances, and they work well in colder climates. Engine heat exchange units harness heat from the vehicle’s engine to provide hot water, which is ideal for long trips but can limit hot water availability when parked. 

A crucial factor in any RV water heater replacement is the BTU rating, as it determines how quickly the water heats up and the heater’s overall efficiency. BTUs, or British Thermal Units, measure the heat output of a water heater, with higher BTUs indicating faster heating. Most RV water heaters range from 12,000 to 60,000 BTUs, depending on the model and type. Here’s what to consider:

• Small to Medium Units (12,000 - 30,000 BTUs): These units are ideal for small RVs or light use. A 12,000 to 30,000-BTU heater can handle minimal hot water needs but may struggle with multiple fixtures at once. 
• High-Capacity Units (60,000 BTUs and Above): High-BTU units are perfect for large families or those who use a significant amount of hot water for showers, dishes, and laundry. These heaters can supply a consistent flow rate of 2.4 gallons per minute, ensuring reliable access to hot water.

In addition to BTUs, consider the capacity of the water heater, especially if you're opting for a tank-style model. Tanks generally range from 6 to 10 gallons, with larger tanks offering longer periods of hot water before needing to reheat. Tankless models, on the other hand, are measured by gallons per minute (GPM), with 2-3 GPM being standard for continuous hot water. 

Modern RV water heater replacements offer a variety of additional features that enhance convenience, comfort, and safety on the road. These extra features can make a significant difference in your overall satisfaction:

• Digital Thermostats and Displays: Many tankless water heaters come with wall-mounted digital thermostats. These intuitive displays allow you to adjust the water temperature with precision and provide diagnostic codes for troubleshooting. 
• Anti-Freeze Protection: For campers who enjoy cold-weather adventures, anti-freeze protection is invaluable. This feature prevents water from freezing inside the heater, so you don’t have to worry about losing hot water in freezing temperatures. 
• Eco Modes and Smart Sensors: Some high-end heaters offer eco modes that reduce power consumption by optimizing heat settings. Smart sensors can detect water pressure and flow rate, adjusting the heat automatically to maintain consistent temperatures. 
• Retrofit Kits: If you’re upgrading an older water heater, some brands offer retrofit kits that make installation easier by ensuring the new heater fits seamlessly into your existing setup. These kits can include additional doors, panels, and venting adapters. 

One of the biggest questions in any RV water heater replacement project is: Should you do it yourself, or hire a professional? Here’s what to consider. 

When it comes to installing a new RV water heater, deciding between a DIY approach and hiring a professional can be challenging. If you’re experienced with plumbing, electrical work, or general maintenance, DIY can be a satisfying and cost-saving option. Installing a water heater yourself allows you to understand its components, making future maintenance easier. However, it’s important to be mindful of the complexities. The installation process typically involves gas, water, and electrical connections, which must be managed carefully to prevent issues like propane leaks, electrical shorts, or water damage. 
  
Hiring a professional may be worth the investment if you're less confident with these tasks or if your RV has unique wiring or plumbing layouts. A skilled installer will ensure that everything is hooked up correctly and according to safety standards. While hiring a professional involves labor costs, the assurance of proper installation and the time saved can be valuable, especially for full-time RVers who rely on consistent hot water. 

Costs for an RV water heater replacement can vary widely based on factors like the type of water heater you choose and whether you opt for DIY or professional installation. A standard replacement water heater can cost between $300 and $1,200, with tankless models typically priced higher than tank-based units due to their efficiency and added features. The overall costs may increase if additional components or supplies are needed, such as new fittings, hoses, or venting systems. 
  
If you decide on DIY installation, your primary expenses will be the water heater itself, along with any necessary tools and parts, which may add around $50 to $100 to the total. The cost of a professional installation can vary depending on the job’s complexity and location. Although hiring a professional increases the price, this option might save you from potential mistakes and the costs of correcting them later. Factoring in these potential risks, a professional installation can sometimes be the more economical choice in the long run. 

If you’re taking on the RV water heater replacement yourself, having the right tools can make all the difference. Basic hand tools like wrenches, screwdrivers, and pliers are a must for disconnecting old fittings and attaching new ones. Plumber’s tape and sealant are essential for creating leak-proof connections, while electrical tape will secure any exposed wiring. If you’re working with an electric water heater, a multimeter can help you safely test power connections and ensure the wiring is correct. 
  
For propane models, a gas leak detector is highly recommended to verify that there are no leaks after installation. Additionally, depending on the size and type of heater, you might need a dolly or extra hands to maneuver the unit into place. With these tools at hand, a DIY RV water heater replacement can be a manageable and rewarding project. 

Safety is critical when replacing an RV water heater, especially if you’re considering a DIY approach. Gas-powered heaters, for instance, require extreme caution with propane connections, as a poorly connected line can lead to dangerous leaks or even explosions. After installation, always check for leaks using a gas leak detector or a simple soapy water test to ensure no propane escapes from the connections. 
  
Electric heaters come with their own set of risks. Improper wiring can lead to electrical shorts or shocks, particularly if you’re handling the heater with wet hands or in humid conditions. If you’re unfamiliar with grounding or using a multimeter, seeking professional assistance is advisable. 
  
Beyond gas and electricity, water heater installations also involve the risk of leaks if fittings aren’t sealed correctly, which could damage your RV’s interior over time. Given these considerations, weighing the danger factor of a DIY RV water heater replacement carefully can help you decide if professional installation might be the safer route. 

Here’s a general guide to the RV water heater replacement process:

1. Turn Off Power and Water: Before starting, disconnect any power supply to avoid shocks and turn off the water to prevent leaks. 
2. Drain the Tank (if you’re replacing a tank-style heater): Open the drain plug and let all water out. 
3. Remove the Old Heater: Use your tools to carefully disconnect any gas, water, and electrical connections. 
4. Install the New Heater: Carefully follow the manufacturer’s instructions for mounting, wiring, and hooking up water and gas lines. 
5. Check Connections: After installation, double-check all connections to ensure there are no leaks or loose wires. 
6. Test the Heater: Turn everything back on, and test the heater to make sure it’s working correctly. 

When considering a new RV water heater, two top-performing brands stand out: Furrion and Girard. Both brands are known for their advanced tankless technology, designed to deliver consistent and reliable hot water, making life on the road more comfortable and convenient. Let’s explore what each of these brands offers to see which might be the best fit for your RV. 

Furrion tankless water heaters allow travelers to enjoy hot water at home-like comfort levels without the limitations of a traditional tank heater. With an impressive output capacity of 2.4 gallons per minute and a powerful heating capability of 60,000 BTUs, Furrion heaters can handle simultaneous hot water demands across multiple RV taps — perfect for busy families on the go. Even in cold weather, down to 32°F, Furrion’s units maintain consistent temperatures, ensuring a steady supply of hot water for showers, dishes, and laundry. 

One of the key advantages of Furrion tankless heaters is their ability to provide continuous hot water without running out. Featuring advanced Vortex technology, the water is pre-mixed before delivery, eliminating cold spots and ensuring consistent temperature. This tankless design means no more waiting between showers or running out of hot water when you need it most, making it an ideal upgrade for any RV hot water heater replacement. 

Furrion’s wall-mounted LED thermostat makes controlling water temperature effortless. With a softly lit, touch-button screen, you can easily set and monitor the water temperature, view the time, and check the flame status. In addition, the intelligent flow meter sensor monitors water flow and alerts you with an error code in case of low water pressure, enhancing ease of use and troubleshooting. 

Safety is always a top priority with Furrion. Their RV water heaters come equipped with essential features like a pressure relief valve, over-temperature protection, blower block protection, and automatic shut-off. Furrion’s Vibrationsmart™ technology also ensures durability against the shocks and vibrations common in road travel. And with built-in antifreeze protection, these heaters keep your water hot even in colder temperatures, so your RV is ready for winter camping. The optional retrofit door installation kits allow easy integration of the heater into an existing opening, providing a polished look and effective upgrade for your RV water heater replacement. 

Girard brings over a decade of research and expertise to the RV market with its tankless hot water heater options, known for their performance and efficiency. The Girard tankless RV water heater delivers hot water at precisely the desired temperature without wasting propane, making it an excellent choice for an RV water heater replacement. 

The Girard water heater’s intelligent design includes an onboard microprocessor that continuously monitors the incoming cold water temperature, flow rate, and outgoing hot water temperature. This advanced control ensures steady water flow and prevents temperature fluctuations, so you won’t experience sudden bursts of hot or cold water. At 42,000 BTUs, the Girard unit offers optimal heating power without overtaxing your RV’s LP gas supply, consuming half the fuel required by traditional six-gallon tank heaters. 

Girard’s wall-mounted digital control panel provides easy access to temperature adjustments from 95 to 124°F, allowing you to set and maintain the perfect level of heat. The display also offers visual diagnostics, with error codes to make troubleshooting simple. Parents can also appreciate the safety features, as pre-setting the hot water temperature reduces the risk of scalding. 

One of Girard’s standout features is its lightweight and compact design, which makes installation a breeze. Designed to fit in the standard cut-out opening of most tank water heaters, the unit eliminates the need for bypass plumbing, tank draining, or anode rod replacements. The hinged door and sliding latch system allow for easy access, and the silicone exhaust ring simplifies alignment, making this a user-friendly choice for an RV water heater replacement. 

With these unique features, both Furrion and Girard tankless water heaters offer dependable, high-performing options to meet the demands of RV life. 

When it comes to RV water heater replacement, questions are common, especially given the wide variety of options and installation considerations. Whether you're wondering about maintenance tips, installation requirements, or the difference between tank and tankless models, having clear answers can make the process smoother and more enjoyable. Here, we’ve compiled answers to some of the most frequently asked questions to help guide you through your RV water heater buying journey, ensuring you’re prepared for both the everyday and the unexpected. 

Signs include inconsistent heating, strange noises, visible leaks, or a water heater over a decade old. 

Many RVers choose DIY for their RV water heater replacement, but it depends on your comfort level with gas and electrical connections. 

It depends on your water usage and preference for hot water availability. A tankless model is ideal for longer hot water duration, while tanks are straightforward and may be more budget-friendly. 

Higher BTUs mean faster heating times, which can be beneficial for those who need hot water quickly. 

Yes, you can replace a traditional tank-style water heater with a tankless model in your RV. Tankless water heaters are becoming increasingly popular because they provide continuous hot water on demand and are generally more energy-efficient. 

While many RV water heaters are designed to fit standard cut-out sizes, there can still be variations in dimensions. Traditional tank water heaters, for example, are often available in 6 or 10-gallon sizes, which fit most RV models. However, when upgrading to a tankless water heater, it's essential to check both the size and installation requirements. Some models may require slight adjustments or retrofitting to properly fit in older RVs or specialized models. 

While tankless water heaters are gaining popularity, traditional tank models are still widely used in RVs due to factors like cost, simplicity, and ease of replacement. Tankless systems generally have higher upfront costs and can require more complex installation, which may deter some RV owners from upgrading.