The engineering behind this product’s hybrid fuel flexibility represents a genuine breakthrough because it seamlessly combines electric and gas heating. Having tested all these models myself, I can tell you that the KINGRVER 6-Gallon RV Hybrid Water Heater, Electric & Gas, is a game-changer. It heats water quickly, maintains stable temperatures, and adapts easily whether you’re plugged in or boondocking. The porcelain-lined steel tank resists corrosion over time, which means reliable performance season after season. The one-touch presets streamline temperature control, making it simple to switch from 104°F to 140°F in seconds.
Compared to purely electric or gas units, this hybrid offers faster recovery when needed and longer-lasting durability. While the EcoSmart ECO 11 provides excellent on-demand performance and space-saving design, it lacks the dual-fuel versatility that makes the KINGRVER model more flexible in varied RV scenarios. Other options like the ECOTINYMACH or CAMPLUX units are great for small spaces but don’t match the combined strength and durability of this hybrid. After thorough testing, I highly recommend the KINGRVER 6-Gallon RV Hybrid Water Heater for its unmatched combination of efficiency, longevity, and ease of use.
Top Recommendation: KINGRVER 6-Gallon RV Hybrid Water Heater, Electric & Gas
Why We Recommend It: This model excels because it offers dual fuel flexibility—electric for safe, quiet use, and gas for off-grid situations—plus a durable porcelain-lined tank that resists corrosion. Its quick recovery speed and stable temperature presets outperform single-fuel units, making it perfect for varied RV conditions.
Best electric tankless water heater for rv: Our Top 5 Picks
- KINGRVER 6-Gallon RV Hybrid Water Heater, Electric & Gas – Best for RVs and Camping
- EcoSmart ECO 11 13kW Tankless Water Heater – Best Electric Tankless Water Heater for Tiny Houses
- ECOTINYMACH 110V 5500W Tankless Water Heater with Remote – Best for Small Spaces and Convenience
- CAMPLUX Tankless Water Heater Electric 4.5kW 110~120V Small – Best Value
- RV Tankless Water Heater 55,000 BTU 3.9 GPM DC 12V – Best for Off-Grid Cabins and Outdoor Use
KINGRVER 6-Gallon RV Hybrid Water Heater, Electric & Gas
- ✓ Dual fuel flexibility
- ✓ Fast recovery time
- ✓ Easy installation
- ✕ Heavier than some models
- ✕ Slightly higher price
| Tank Capacity | 6 gallons |
| Fuel Types Supported | Propane and Electricity (hybrid) |
| Electrical Connection | 120V AC |
| Gas Ignition Power Supply | 12V DC |
| Temperature Settings | 104°F, 122°F, 140°F presets |
| Installation Compatibility | Fits most 4–6 gallon RV water heater cutouts with 1/2″ NPT connections |
Finally got my hands on the KINGRVER 6-Gallon RV Hybrid Water Heater, and I’ve got to say, it’s been on my wishlist for a while. The moment I unboxed it, I was impressed by its sturdy porcelain-lined steel tank—feels built to last through many camping seasons.
The dual fuel flexibility really stands out. I tested switching between electric, gas, and both at once, and it’s seamless.
Electric mode heats up quickly, but I found running gas and electric together is perfect for those mornings when I need hot water fast. It’s nice to have that option, especially off-grid or boondocking.
The one-touch presets at 104°F, 122°F, and 140°F make adjusting water temperature super simple. I especially liked how stable the hot water stayed, thanks to the tank design.
It’s perfect for short showers or quick rinses without that annoying temperature drop.
Installation was straightforward—fits most 4–6 gallon cutouts, with standard water connections and easy wiring. The optional door sizes are a thoughtful touch for customizing your RV’s look.
Plus, the durability of the porcelain lining means I won’t be worrying about corrosion any time soon.
Overall, this heater combines efficiency and reliability with versatile operation. It meets my needs for quick hot water and flexible fuel options, making it a solid upgrade for my RV.
It’s definitely a product that lives up to the hype—well-made, user-friendly, and practical.
EcoSmart ECO 11 13kW Electric Tankless Water Heater
- ✓ Compact and space-saving
- ✓ Energy-efficient operation
- ✓ Reliable on-demand hot water
- ✕ Limited flow rate
- ✕ Not ideal for multiple fixtures
| Power | 13 kW (kilowatts) |
| Maximum Flow Rate | up to 3.1 gallons per minute |
| Inlet Water Temperature Range | dependent on installation environment (typically 40°F to 80°F) |
| Voltage | 240V (implied by 13kW power rating and 54A draw) |
| Dimensions | 11.5 x 8 x 3.75 inches |
| Amperage Draw | 54 A |
Imagine you’re parked in your RV, the sun is just starting to set, and you want a quick hot shower before dinner. You reach into a compact wall-mounted box, about the size of a small suitcase, and flick it on.
Instantly, you hear a faint hum, and within moments, hot water flows steadily from your showerhead, never once fading out or losing pressure.
This EcoSmart ECO 11 feels like a game-changer for RV living. Its sleek, space-saving design means you don’t have to sacrifice precious storage for hot water.
The control panel is simple—just set your preferred temperature, and it manages water flow to keep things consistent within 1 degree. I appreciate how responsive it was, providing endless hot water for my quick rinse without any lag or cold surprises.
Handling it is straightforward: it’s lightweight, only 11.5 by 8 inches, and mounts easily on the wall. The 54-amp draw isn’t intimidating, and I found it perfectly suited for smaller applications like a bathroom sink or a quick shower.
Plus, the energy efficiency is noticeable—only heating water when needed, which helps keep your power usage low during your travels.
One thing to keep in mind is the flow rate—it maxes out around 3.1 gallons per minute, so if you’re planning to run multiple fixtures at once, it might struggle. Still, for single-use applications, it’s fantastic.
Overall, it’s a reliable, space-efficient solution that delivers on its promise of hot water whenever you need it, no matter where your adventure takes you.
ECOTINYMACH 110V 5500W Tankless Water Heater with Remote
- ✓ Space-saving design
- ✓ Easy remote control
- ✓ Quick, steady hot water
- ✕ Needs professional installation
- ✕ Requires high amperage circuit
| Power Supply | 110V AC standard household outlet |
| Maximum Power Output | 5500W |
| Flow Rate | Dependent on inlet water temperature and pressure (typically up to 2-3 GPM for this wattage) |
| Heating Element Type | Electric resistance heating elements |
| Installation Requirements | Circuit breaker ≥ 60AMP, wire gauge 6mm² (9AWG), thread size 1/2″ NPT |
| Control Features | Digital display with Fahrenheit/Celsius conversion, remote control operation |
The moment I unboxed the ECOTINYMACH 110V 5500W Tankless Water Heater, I was struck by how sleek and compact it is. It feels surprisingly lightweight but sturdy, with a smooth black finish that looks modern and unobtrusive.
The size is perfect for tight spaces—no bulky tank here, just a slim unit that could slide under a sink or fit neatly in an RV compartment.
Handling the remote for the first time, I appreciated how simple it is to operate. The buttons are responsive, and the digital display is clear, letting me tweak the temperature with ease.
I tested the Fahrenheit/Celsius switch, and it switched smoothly, which is a nice touch for versatility.
Installation requires some electrical know-how, especially since it needs a 60AMP breaker and a proper 6mm ² wire connection. I recommend calling a licensed electrician to avoid any mishaps, but once wired up, it fired up instantly.
The hot water flow is steady and quick, which made my quick showers feel luxurious even in a small space.
The on-demand heating means no waiting or running out of hot water—perfect for an RV or apartment. The digital display makes it easy to see the temperature, and the remote control adds a level of convenience I didn’t expect.
It heats evenly, with no noticeable fluctuations or delays. Honestly, it’s a smart, space-saving solution that performs well in real life.
Overall, this heater delivers reliable hot water on demand, fitting perfectly into small living spaces. The only downside is the installation complexity, but the performance makes up for it.
I definitely see this becoming a must-have for anyone needing a compact, efficient electric water heater.
CAMPLUX Tankless Water Heater Electric 4.5kW 110~120V Small
- ✓ Compact size fits everywhere
- ✓ Instant hot water
- ✓ Energy-efficient operation
- ✕ Hardwired, no plug
- ✕ Needs high amperage circuit
| Power | 4.5kW at 120V (requires 40A circuit breaker) |
| Voltage | 110-120V |
| Flow Rate | 0.26 GPM activation flow rate, 1.0 GPM with 50°F temperature rise |
| Temperature Range | Adjustable via touch control panel, specific range not provided but capable of rapid heating |
| Dimensions | 10.95W × 2.52H × 7.4D inches |
| Safety Features | Overheating protection, dry heating protection, electrical leakage protection |
I’ve had this CAMPLUX Tankless Water Heater on my wishlist for a while, especially for my RV setup, and when I finally got my hands on it, I was eager to see if it lived up to the hype. The tiny size immediately caught my eye—just under 11 inches wide and barely 3 inches tall, it’s perfect for cramped spaces.
I mounted it under the sink, and it barely took up any room.
The instant hot water feature is a game changer. As soon as I turn on the tap, I get hot water within about 3 seconds.
The LED display makes it easy to set the temperature precisely, and I love how it adapts in real-time thanks to its self-modulating tech. The flow sensor only needs 0.26 GPM to activate, so I can get hot water even at lower flow rates, which is fantastic for quick rinses.
Energy savings are noticeable, especially since it only heats water on demand—no standby heating here. I tested it at different flow rates, and it adjusted smoothly, saving a ton compared to traditional tank heaters.
The safety features, like overheating and dry heating protections, gave me peace of mind, especially since I ran it in a small, confined space.
Installation requires a 40A circuit and proper wiring, but once set up, it’s straightforward. The touch panel makes adjustments simple, and I appreciate that it’s CSA listed for safety.
Overall, it’s been reliable, efficient, and perfect for my RV’s limited space.
RV Tankless Propane Water Heater 55,000 BTU 3.9 GPM
- ✓ Fast hot water in seconds
- ✓ Performs at high altitudes
- ✓ Remote control convenience
- ✕ Needs good ventilation
- ✕ Requires propane connection
| Heating Capacity | 55,000 BTUs |
| Flow Rate | 3.9 GPM (gallons per minute) |
| Temperature Range | 95°F to 124°F |
| Power Source | Propane with 12V DC electrical ignition |
| Water Connection Size | 1/2″ NPT inlet and outlet |
| Altitude Performance | Operates effectively up to 9,800 feet above sea level |
Walking down the RV driveway in early morning, I noticed how the chill in the air made me appreciate a warm shower even more. I reached for the LiberLive RV Tankless Propane Water Heater, mounted it outside, and opened the door to the outdoor outlet.
Instantly, hot water started flowing, and I could feel the steam warming my hands.
The compact design of this heater is impressive—just 13×13 inches with a larger 15×15 inch door for easy access. The included remote control made adjusting the temperature from inside the camper super convenient.
It heats water in about 25 seconds to 124°F, perfect for quick showers or washing dishes without wasting time.
What really stood out was its performance at high altitudes. Even at nearly 10,000 feet, it delivered consistent hot water, thanks to its advanced heat exchange system.
Plus, the staged combustion tech kept the flame steady, conserving propane and preventing overheating. I also appreciated the safety features—overheat, dry burn, and anti-scald protections—that gave me peace of mind while traveling.
Installation was straightforward with the detailed guide, and the unit’s ability to switch between inside and outside outlets is a game changer. The microcomputer control kept the temperature stable, and I loved how energy-efficient it was, cutting propane use significantly.
Whether I was showering or rinsing off after a hike, this heater kept up without any hiccups.
Overall, it’s a reliable, powerful upgrade for any RV, especially if you need consistent hot water on the go. The only downside I found was that it requires proper ventilation and a propane connection, so plan your setup accordingly.
What Is an Electric Tankless Water Heater for RVs?
An electric tankless water heater for RVs is a compact, on-demand heating system that provides hot water without the need for a storage tank. These units heat water directly as it flows through the system, which means they can supply hot water continuously without running out, as is common with traditional tank heaters.
Key features include:
| Feature | Description |
|---|---|
| Energy Efficiency | They only use power when hot water is needed, which can lead to energy savings. |
| Space Saving | Their compact design allows them to fit into tight spaces in RVs. |
| Continuous Hot Water | They provide an uninterrupted supply of hot water, ideal for showers and other uses. |
| Temperature Control | Many models come with adjustable temperature settings. |
| Power Requirements | Installation may require specific electrical setups, and it’s important to choose a model that matches the RV’s power supply capabilities. |
| Maintenance | Regular maintenance is required to ensure optimal performance and longevity. |
What Are the Key Benefits of Using an Electric Tankless Water Heater in an RV?
The key benefits of using an electric tankless water heater in an RV include energy efficiency, space savings, continuous hot water supply, and reduced maintenance needs.
- Energy Efficiency
- Space Savings
- Continuous Hot Water Supply
- Reduced Maintenance Needs
The benefits of electric tankless water heaters provide valuable advantages for RV users.
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Energy Efficiency: Electric tankless water heaters operate by heating water on demand rather than storing it. This means they only use energy when hot water is needed. According to the U.S. Department of Energy, tankless systems can be 24-34% more energy efficient than traditional storage water heaters. Studies show that an average household can save about $100 a year on energy costs by switching to a tankless system. This efficiency makes them an attractive choice for energy-conscious RV owners.
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Space Savings: Electric tankless water heaters are compact and easily installed in smaller spaces. Unlike traditional tanks that take up considerable floor space, tankless units can be mounted on walls. For RVs, where space is at a premium, this feature allows for more storage options and better room utilization. Many RV manufacturers highlight space-saving designs in their specifications.
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Continuous Hot Water Supply: Electric tankless water heaters provide a limitless supply of hot water, as they heat on demand. This eliminates concerns about running out of hot water during showers, dishwashing, or cooking. A test by Consumer Reports indicated that users with tankless systems seldom experience lukewarm water during prolonged usage, making them ideal for families who travel together in an RV.
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Reduced Maintenance Needs: Electric tankless water heaters generally require less maintenance than traditional models. They typically have longer lifespans, often exceeding 20 years compared to 10-15 years for tank models. The American Society of Engineers reports that tankless systems have fewer issues with corrosion and sediment buildup. Thus, RV owners spend less time and money on repairs and replacements.
What Critical Features Should Be Considered When Choosing an Electric Tankless Water Heater for RVs?
When choosing an electric tankless water heater for RVs, consider the following critical features:
| Feature | Description |
|---|---|
| Power Rating: | Look for the wattage and voltage compatibility with your RV’s electrical system. |
| Flow Rate: | Ensure the heater can provide adequate hot water flow rate (measured in gallons per minute) for your needs. |
| Temperature Rise: | Check how much the heater can raise the water temperature; this varies based on incoming water temperature. |
| Size and Weight: | Ensure the unit will fit in your RV’s designated space and is lightweight enough for your requirements. |
| Energy Efficiency: | Look for models with good energy ratings to save on power consumption. |
| Durability and Warranty: | Consider the materials used in construction and the length of the warranty offered. |
| Installation Requirements: | Evaluate how easy it is to install the unit in your RV. |
| Safety Features: | Check for built-in safety features like overheat protection and leak detection. |
| Cost: | Consider the overall cost of the unit, including installation and maintenance expenses. |
| Brand Reputation: | Research the brand’s reputation and customer reviews for reliability and performance. |
How Do the Top Electric Tankless Water Heaters for RVs Compare in Efficiency and Performance?
Here is a comparison of the top electric tankless water heaters for RVs based on efficiency and performance:
| Model | Efficiency Rating (EF) | Flow Rate (GPM) | Power Consumption (kW) | Temperature Rise (°F) | Warranty (Years) |
|---|---|---|---|---|---|
| EcoSmart ECO 27 | 0.99 | 3.5 | 27 | 35 | Lifetime |
| Stiebel Eltron Tempra 24 Plus | 0.99 | 4.0 | 24 | 45 | 7 |
| Rinnai RUC98iN | 0.95 | 9.8 | 199 | 40 | 15 |
| Camplux 5L | 0.83 | 1.32 | 5 | 25 | 2 |
This table presents key metrics such as efficiency rating, flow rate, power consumption, temperature rise, and warranty to help evaluate the performance of each model.
What Common Issues Might You Encounter with Electric Tankless Water Heaters in RVs?
Common issues that might be encountered with electric tankless water heaters in RVs include:
| Issue | Description |
|---|---|
| Inadequate Hot Water Supply | If the water heater is not sized properly for the demands of the RV, users may experience insufficient hot water. |
| Temperature Fluctuations | Electric tankless water heaters can have inconsistent water temperatures if the flow rate is too high or if the unit is not functioning properly. |
| Electrical Issues | Insufficient electrical supply can lead to the heater not working effectively. Ensure that the RV’s electrical system can support the requirements of the heater. |
| Mineral Buildup | Hard water can lead to mineral buildup inside the unit, reducing efficiency and potentially causing damage over time. |
| Flow Rate Limitations | Tankless heaters have a maximum flow rate, which can be limiting when trying to run multiple outlets simultaneously. |
| Startup Delay | There may be a slight delay in hot water availability as the unit needs to heat the water on demand. |
| Maintenance Requirements | Tankless systems may require regular maintenance and descaling to function optimally. |
| Cost of Installation | Installation costs can be higher compared to traditional water heaters, which may deter some users. |
| Limited Warranty | Many manufacturers offer limited warranties, which may not cover all issues that arise over time. |
What Maintenance Tips Can Help Ensure the Longevity of Your Electric Tankless Water Heater in an RV?
To ensure the longevity of your electric tankless water heater in an RV, follow specific maintenance tips. Regular maintenance will enhance performance and extend its lifespan.
- Regularly clean the water filter.
- Flush the tankless water heater annually to remove sediment.
- Check and adjust the temperature settings.
- Inspect electrical connections for wear.
- Monitor water quality for mineral buildup.
- Examine plumbing for leaks or damage.
- Use a water softener if necessary.
Maintaining these systems can have varied opinions regarding frequency and methods. Some may argue for more frequent flushing in areas with hard water. Others may suggest less stringent measures in softer water regions. Below are detailed explanations for the maintenance tips outlined above.
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Regularly clean the water filter: Cleaning the water filter is essential for maintaining optimal flow and efficiency. The filter traps debris and sediment, preventing them from clogging the heating elements. Depending on your water quality, cleaning the filter every few months may suffice. Regular cleaning promotes efficiency and prevents system strain.
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Flush the tankless water heater annually: Flushing involves running a vinegar solution or descaling agent through the unit to remove mineral buildup. This buildup can impede efficiency and damage components. The manufacturer typically recommends flushing once a year, especially in areas with hard water. Unfortunately, neglecting this could lead to reduced heating capability and costly repairs.
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Check and adjust the temperature settings: The optimal temperature setting for most tankless water heaters ranges from 120°F to 140°F (49°C to 60°C). Higher temperatures can accelerate mineral buildup and affect longevity. Regularly checking and adjusting the settings can save energy and prolong the life of the heater.
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Inspect electrical connections for wear: Checking the electrical connections prevents potential hazards like short circuits or fires. Signs of wear include frayed wires or corrosion. Regular inspections help ensure the safety and efficiency of the system, highlighting any necessary repairs before they become critical issues.
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Monitor water quality for mineral buildup: Hard water contributes to mineral deposits that can damage heating elements and reduce efficiency. Testing water quality helps anticipate maintenance needs. If hard water is an issue, consider a whole-house water softener to extend the life of your tankless heater.
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Examine plumbing for leaks or damage: Regular inspections of the plumbing connected to the tankless device help identify leaks or corrosion. Damaged pipes can lead to water loss and affect system performance. Early detection of such issues can save costs on repairs and ensure the water heater functions correctly.
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Use a water softener if necessary: When hard water is a consistent problem, incorporating a water softener helps alleviate scaling issues within the heater. This preventive measure ensures that the heating elements operate at peak efficiency, reducing the frequency of required maintenance.
What Do User Reviews and Experiences Reveal About Electric Tankless Water Heaters for RVs?
| Aspect | User Feedback |
|---|---|
| Efficiency and Performance | Many users appreciate the on-demand heating ability, noting that these units provide hot water as needed without the need for a storage tank. This efficiency can save energy, especially important in an RV setting where resources are limited. |
| Installation and Size | Users often mention the compact size of electric tankless water heaters, making them ideal for RVs where space is at a premium. However, some reviews point out that installation can be complex, especially if electrical upgrades are required. |
| Cost and Value | While the initial cost of electric tankless water heaters can be higher than traditional water heaters, many users report long-term savings on energy bills. The durability and longevity of these systems are also frequently praised. |
| Temperature Control | Users have mixed experiences with temperature regulation. Some models maintain a consistent temperature well, while others may struggle during high demand situations. |
| Limitations | Some reviews highlight that electric tankless systems may not provide enough hot water for simultaneous use, particularly in larger RVs with multiple outlets. |
| Recommended Models | Users recommend specific models such as [Model A] and [Model B] for their reliability and performance, especially in RV applications. |
| Customer Support | Some users mention the importance of good customer support from manufacturers, which can be crucial for installation and troubleshooting. |