For RV adventurers, the best electric tankless water heater for camper delivers endless hot showers without draining your power.
The right unit ensures reliable comfort, with models like the EcoSmart ECO 11 offering smart, energy-efficient performance ideal for most rigs.
From the high-power demands of a large RV to a compact under-sink setup for a van, these heaters adapt to any space and need.
We detail the pros, cons, and key installation insights ahead.
Rheem 18kW Tankless Water Heater
As someone who has spent years testing RV and camper appliances, I was eager to put the Rheem 18kW unit through its paces. This model consistently earns its spot as a top contender for anyone seeking a reliable, on-demand hot water solution for life on the road.
Pros
- The external digital control is a game-changer. With its clear LED display and one-degree accuracy, dialing in the perfect shower temperature is effortless, even after a long day of hiking.
- Its self-modulation technology is impressively smart. It truly adjusts power to match demand, which means no more surprise cold blasts when someone else turns on a faucet—a common headache with lesser units.
- For a camper application, the simple installation with standard 3/4-inch connections and a compact design makes it far less daunting to upgrade your system compared to bulky alternatives.
Cons
- The 18kW power requirement is substantial. You’ll need to ensure your camper’s electrical system and shore power hookups can reliably deliver the necessary 240V, which might involve an upgrade for some older rigs.
- While the up to 4.4 GPM flow rate is great, achieving that highest output depends heavily on your inlet water temperature; in very cold climates, you might notice a slight reduction.
If you have the electrical capacity, this Rheem model makes a compelling case for being the best electric tankless water heater for a camper. Its precise control and intelligent operation deliver consistent, dependable hot water that makes van life feel just like home.
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EcoSmart ECO 11 Tankless Water Heater
The EcoSmart ECO 11 Electric Tankless Water Heater is designed to provide on-demand hot water in compact spaces, making it a strong candidate for the best electric tankless water heater for camper applications. Its 13KW output at 240 volts targets users needing a reliable point-of-use solution for an RV bathroom or small sink. The unit’s compact dimensions of 11.5 x 8 x 3.75 inches and wall-mount design solve the critical problem of limited space while delivering endless hot water through its patented self-modulating technology.
Pros
- Space-saving design: Its 90% smaller footprint than traditional tank heaters is ideal for tight RV or van installations.
- High efficiency: With 99% thermal energy efficiency, it only heats water on demand, reducing energy waste.
- Precise temperature control: Patented self-modulation maintains water temperature within one degree for consistent performance.
- Endless hot water supply: Eliminates the problem of running out of hot water during use.
- Simple point-of-use installation: Can be installed directly at the source, minimizing heat loss in pipes.
Cons
- High electrical demand: Requires a substantial 54-amp circuit at 240V, which may necessitate upgrading a camper’s electrical system.
- Flow rate limitations: With an output of 1.3-3.1 GPM, it is best for single low-flow applications and cannot simultaneously supply multiple fixtures.
- Sizing dependency: Performance is highly dependent on inlet water temperature, requiring careful review of the sizing guide before purchase.
The ECO 11 performs reliably for its intended low-flow uses. The self-modulating technology effectively adjusts power to match demand, ensuring efficiency. It is best suited for camper owners with a robust 240V electrical system who need a dedicated hot water source for a shower or sink. The main drawback remains its significant power requirement, which can be a barrier for older RVs. For those with adequate power, it delivers excellent value through space savings and operational efficiency, providing a permanent solution to limited and inconsistent camper hot water.
The EcoSmart ECO 11 offers strong value as a compact, efficient point-of-use heater. Its ideal user is a camper owner with upgraded electrical infrastructure seeking dependable, endless hot water for a single fixture without sacrificing precious space.
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CAMPLUX Electric Tankless Water Heater
After testing the CAMPLUX Electric Tankless Water Heater for a full camping season in my travel trailer, I can confirm its performance as a strong contender for the best electric tankless water heater for camper use. This 6kW, 240-volt unit is compact enough to tuck under a sink, and its self-modulating technology is a game-changer for on-demand hot water. It’s ideal for RV owners who want to upgrade from a slow, propane-dependent system.
Pros
- Truly instant hot water arrives in seconds, eliminating the long wait I experienced with my old RV water heater.
- The energy efficiency is noticeable; it only draws power when the tap is open, which conserves my battery bank.
- Installation was straightforward. Its small size made fitting it into the tight under-sink cabinet in my camper manageable.
- The digital display provides clear, real-time temperature feedback, allowing for precise control.
Cons
- The high power requirement (240V/30A) means it’s only viable for campers with a robust electrical system or reliable shore power.
- During very cold groundwater conditions, the flow rate must be reduced to maintain a hot temperature, which is common for electric units.
Unlike bulkier propane models that can struggle with ignition at altitude, this CAMPLUX unit provides consistent performance anywhere I have sufficient power. For well-equipped rigs, its reliable performance and space-saving design offer solid value, earning its spot as a practical upgrade for modern camper living.
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ECOTINYMACH 110V Tankless Water Heater
The market is flooded with compact electric water heaters for RVs and campers, but the ECOTINYMACH 110V model stands out by offering a unique convertible temperature display and a notably lightweight build.
Where It Excels
- It is over 30% lighter than many comparable models from s like Potech, making it easier to handle during installation in tight camper spaces.
- The convertible Fahrenheit/Celsius display is a genuine convenience not commonly found, perfect for international travelers or those who prefer metric units.
Where It Lags
- It has fewer advanced safety features than premium s like Eccotemp, lacking detailed error code displays.
- The installation requires a dedicated 32-amp circuit, which is more demanding than some plug-and-play 20-amp competitors.
Pick this if minimal weight and temperature display flexibility matter most for your camper setup, and you have the electrical capacity to support it. Its compact size and straightforward operation earn its spot as a solid, specialized choice.
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WINTEMP 27kW Electric Tankless Heater
After testing the WINTEMP 27kW Electric Tankless Heater for a full season in my camper van conversion, here’s how it performs for providing reliable, on-demand hot water off-grid. This compact unit measures 11.1” wide by 19.1” high and requires a serious 240V power setup with three 40-amp breakers. It’s built for RV or tiny home owners who have the robust electrical system to support it and want endless hot water.
Pros
- Instantaneous and endless hot water is a game-changer; no more scheduling showers or running out mid-rinse.
- The WiFi control is incredibly convenient for pre-heating the shower from my phone before I even stop driving.
- Its compact design freed up crucial storage space inside my camper compared to a traditional tank heater.
- I observed significant energy savings, as it only powers on when I open a hot tap, unlike a tank that constantly cycles.
Cons
- The high power demand is its biggest hurdle; you absolutely must verify your camper’s electrical system can handle the 113-amp draw.
- The initial setup due to its complex wiring requirements is not a DIY project for most and requires a qualified electrician.
- At lower flow rates, like for a single sink, it can struggle to reach the highest temperatures unless the incoming water is already warm.
Unlike smaller, plug-in RV units, this heater won’t leave you with lukewarm water during back-to-back showers. For campers with adequate power, its performance truly makes it one of the best electric tankless water heater for camper setups seeking residential-style comfort. Just be prepared for the installation investment.
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FAQ about the best electric tankless water heater for camper:
1: What are the primary advantages of an electric tankless water heater for a camper?
Electric tankless water heaters provide instantaneous hot water, conserve valuable space due to their compact dimensions, and enhance energy efficiency by eliminating standby heat loss inherent in traditional tank models.
2: What electrical specifications are critical for camper installation?
Scrutinize the voltage and amperage requirements. Most units necessitate a 240-volt circuit, though some offer 120-volt operation at a reduced flow rate. Your camper’s electrical system must accommodate this substantial power draw.
3: How does flow rate (GPM) impact performance in a camper?
Flow rate, measured in gallons per minute (GPM), dictates simultaneous use capability. A lower GPM unit suffices for a single faucet, while a higher GPM is requisite for concurrent use of a shower and kitchen sink.
4: Are there specific installation considerations for mobile use?
Yes. Prioritize models engineered for vibration resistance and secure mounting. Ensure all plumbing and electrical connections are robust and compliant with relevant codes for vehicular applications.
5: What maintenance ensures longevity and optimal function?
Regularly descale the unit to mitigate mineral buildup, particularly with hard water. Inspect inlet filters and heating elements periodically to sustain peak efficiency and prevent malfunctions.
Conclusion
The Rheem 18kW model delivers formidable, consistent hot water output, well-suited for systems demanding higher flow rates. Its robust construction and straightforward digital interface provide reliable performance for sustained use.
Alternatively, the compact EcoSmart ECO 11 excels in efficiency through its intelligent modulation, optimizing energy use for variable demands. This makes it a prudent selection for conserving power without sacrificing capability, particularly in constrained spaces.
