After researching manufacturer specifications, industry safety standards, and aggregated owner feedback, we compared the top RV tankless hot water heaters on the market. Our evaluation focuses on performance, durability, ease of installation, and safety features to help you choose the right model for your camper.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Furrion Tankless Water Heater Top Pick 1.6 GPM, 14,000-32,000 BTU, propane |
9.0 | 🛒 Check Price |
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Girard Products 2GWHAM Tankless Water Heater Runner Up 1.5 GPM, 42,000 BTU, propane |
8.8 | 🛒 Check Price |
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Eccotemp EM-7.0 Tankless Water Heater Best Value 1.5 GPM, 50,000 BTU, propane |
8.4 | 🛒 Check Price |
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Camco 11641 Tankless Water Heater Compact Design 1.5 GPM, 42,000 BTU, propane |
8.1 | 🛒 Check Price |
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Suburban 5208A Tankless Water Heater Durable Build 1.5 GPM, 42,000 BTU, propane |
7.8 | 🛒 Check Price |
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Bosch Tronic 3000 T 1.5 Tankless Water Heater Electric Option 1.5 GPM, 13.5 kW, electric |
7.3 | 🛒 Check Price |
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Marey PowerPack 1.5 GPM Tankless Water Heater Budget Pick 1.5 GPM, 42,000 BTU, propane |
7.1 | 🛒 Check Price |
1. Furrion Tankless Water Heater: Top Pick
The Furrion Tankless Water Heater is a popular choice among RV owners due to its reliable performance and straightforward installation. In our evaluation, it delivers a steady 1.6 GPM flow, enough for simultaneous shower and sink use, with minimal temperature fluctuation. The electronic ignition and safety features meet industry standards, and owner feedback highlights its durability in varied climates.
However, the unit requires a 12V DC connection, which can be a limitation for boondockers who rely on battery power. If you frequently camp off-grid without solar or generator backup, this model may drain your batteries faster than expected. Skip this pick if you need a propane-only ignition system.
- On-demand endless hot water with consistent temperature control
- Compact design fits standard RV cutouts (14 x 14 inch opening)
- Electronic ignition with safety shut-off and freeze protection
Pros: Reliable temperature regulation even at high altitude; Easy retrofit into existing propane systems
Cons: Requires 12V DC power; may drain battery if used extensively
2. Girard Products 2GWHAM Tankless Water Heater: Runner Up
Girard’s 2GWHAM is a well-engineered tankless heater that excels in temperature consistency. Based on owner feedback and spec sheets, its modulating gas valve adjusts flame output to maintain set temperature within +/- 2 degrees. It works well with low water pressure, a common issue in RV parks. The unit’s safety certifications include automatic shut-off if flame fails.
That said, the external venting system is more complex than some competitors, potentially increasing installation cost. If you are not handy with gas lines and venting, you may need a professional. Skip this if you want a simple drop-in replacement for a standard RV water heater.
- Patented modulating gas valve for precise temperature control
- Low water pressure operation down to 20 PSI
- Compact size with external venting for safe installation
Pros: Excellent temperature stability even with variable water pressure; Quiet operation compared to other tankless models
Cons: Installation may require professional help due to venting requirements
3. Eccotemp EM-7.0 Tankless Water Heater: Best Value
The Eccotemp EM-7.0 offers solid performance at a budget-friendly price. In our researched comparison, it provides adequate hot water for small to mid-size RVs with a 1.5 GPM flow rate. Owner feedback notes that the digital display is helpful for monitoring temperature, and the unit includes essential safety features. It can be installed indoors or outdoors with the provided vent kit.
However, some owners report that the plastic water connections and internal parts are prone to cracking in freezing temperatures if not properly winterized. If you camp in harsh winter conditions, consider a model with more robust construction. Skip this pick if you need maximum durability for full-time RV living.
- Indoor/outdoor installation with included vent kit
- Digital temperature display and push-button controls
- Safety features include overheat protection and flame failure detection
Pros: Affordable price point for the features offered; Easy to operate with intuitive controls
Cons: Plastic internal components may be less durable than metal
4. Camco 11641 Tankless Water Heater: Compact Design
The Camco 11641 is designed for space-constrained RVs and van conversions. Its compact dimensions make it easy to install in cabinets or under counters. The stainless steel heat exchanger resists corrosion, and the electronic ignition adds convenience. Based on owner feedback, it performs well in moderate climates.
However, in colder weather, the flow rate can drop below 1 GPM when incoming water is cold, which may disappoint those expecting consistent output. If you frequently camp in cold regions, this may not meet your needs. Skip this pick if you need a high-flow heater for simultaneous use.
- Ultra-compact size fits in tight spaces (13 x 13 x 7 inches)
- Electronic ignition with auto shut-off
- Corrosion-resistant stainless steel heat exchanger
Pros: Small footprint ideal for small campers and van conversions; Stainless steel heat exchanger for longevity
Cons: Flow rate drops significantly in cold inlet water temperatures
5. Suburban 5208A Tankless Water Heater: Durable Build
Suburban is a trusted name in RV water heaters, and the 5208A continues that reputation with a focus on durability. The stainless steel cabinet and heat exchanger are built to last, and owner feedback praises its performance in dusty and windy environments. The direct spark ignition is dependable.
On the downside, the unit is heavier and bulkier than some tankless models, which may be a concern for weight-conscious RVers. Additionally, the temperature control is less precise than modulating units, leading to occasional temperature swings. Skip this pick if you prioritize precise temperature regulation over ruggedness.
- Heavy-duty stainless steel cabinet and heat exchanger
- Direct spark ignition with safety lockout
- Compatible with standard RV propane systems
Pros: Rugged construction withstands rough roads and weather; Reliable ignition in windy conditions
Cons: Heavier than many competitors (about 30 pounds)
6. Bosch Tronic 3000 T 1.5 Tankless Water Heater: Electric Option
The Bosch Tronic 3000 T is an electric tankless water heater suitable for RVs with adequate electrical capacity. It eliminates the need for propane and venting, making it a clean option. The digital control allows precise temperature setting, and the unit is very compact.
However, it draws 60 amps, which most RV electrical systems cannot handle without a dedicated circuit and heavy wiring. Many owners report that it trips breakers when used with other appliances. This heater is only practical for RVs with 50-amp service or upgraded electrical systems. Skip this pick if you have a standard 30-amp RV.
- Electric operation, no propane required
- Compact and lightweight design (about 11 pounds)
- Digital temperature control with LED display
Pros: No gas lines or venting needed; Easy installation for electric-only setups
Cons: Requires high amperage (60A) circuit, may need electrical upgrade
7. Marey PowerPack 1.5 GPM Tankless Water Heater: Budget Pick
The Marey PowerPack is the most budget-friendly tankless water heater we evaluated. It provides basic on-demand hot water at a low cost, making it accessible for those on a tight budget. The propane operation is straightforward, and safety features are present.
However, based on owner feedback, temperature regulation is poor; sudden changes in water flow lead to noticeable hot-cold spikes. The build quality is also lower, with reports of gas valve issues after a few seasons. If you can tolerate temperature fluctuations and are willing to replace it sooner, this may work. Skip this pick if you want consistent comfort or long-term reliability.
- Lowest price among tankless options
- Simple manual temperature control knob
- Includes safety shut-off and flame failure device
Pros: Very affordable for budget-conscious buyers; Basic functionality works for small RVs
Cons: Inconsistent temperature control, especially with flow changes
Frequently Asked Questions
How does an RV tankless water heater work?
An RV tankless water heater heats water on demand using a propane burner (or electric element) activated by water flow. When you open a hot water tap, the unit ignites and heats a heat exchanger, providing continuous hot water as long as the flow continues. It eliminates the need for a storage tank, saving space and weight.
What size tankless water heater do I need for my RV?
Most RV tankless heaters are rated by flow rate in gallons per minute (GPM). For a single shower, 1.5 GPM is sufficient; for simultaneous use (shower and sink), look for 1.6-2.0 GPM. Also consider inlet water temperature: colder water requires more BTU output. Check your RV’s propane system capacity and electrical system if choosing an electric model.
Can I install a tankless water heater myself?
Many RV tankless water heaters are designed for DIY installation, especially if replacing an existing tank-type heater. However, gas and electrical connections should be done by a qualified professional to ensure safety and compliance with codes. Always follow the manufacturer’s instructions and local regulations.
Do tankless water heaters work in cold weather?
Yes, but performance can be affected. In cold weather, incoming water temperature is lower, reducing the flow rate the heater can achieve. Some models have freeze protection features, but you must winterize the unit if storing the RV in freezing temperatures. Insulating pipes and the unit helps maintain performance.
Are RV tankless water heaters more efficient than tank models?
Yes, tankless water heaters are generally more energy-efficient because they only heat water when needed, eliminating standby heat loss. This can save propane over time. However, they may use more energy during operation due to higher BTU output. Overall, they can be a good upgrade for efficiency and endless hot water.
Our Verdict
After researching and comparing specifications, safety standards, and owner feedback, our top pick is the Furrion Tankless Water Heater for its reliable performance, easy installation, and consistent temperature control. The runner-up is the Girard 2GWHAM, which offers excellent temperature stability and quiet operation, ideal for those who prioritize precision.
