We researched and compared the top RV water heaters on the market. Our evaluation is based on manufacturer specifications, published safety standards, and aggregated owner feedback to help you choose the best unit for your camper.
| Photo | Product | Score | Buy |
|---|---|---|---|
 |
Suburban SW6DE Best Overall Propane/Electric 6-gallon capacity, propane/electric combo, 12,000 BTU burner |
9 | 🛒 Check Price |
 |
Atwood/Girard GSWH-2 Best Tankless Propane Tankless, propane, 1.5 GPM flow rate |
8.7 | 🛒 Check Price |
 |
Bosch Tronic 3000 T 4-Gallon Best Compact Electric 4-gallon electric, 1440W, 120V |
8.2 | 🛒 Check Price |
 |
Suburban 520792 Best Drop-In Replacement 6-gallon propane, 12,000 BTU, direct spark |
8.4 | 🛒 Check Price |
 |
Camco 11673 Best Value Electric Tank 6-gallon electric, 120V, 1440W |
7.8 | 🛒 Check Price |
 |
EccoTemp i12-LP Best Portable Propane Tankless propane, 1.5 GPM, outdoor use only |
7.3 | 🛒 Check Price |
 |
Atwood 94119 Best Direct Ignition Propane 6-gallon propane, 12,000 BTU, direct spark |
7.6 | 🛒 Check Price |
1. Suburban SW6DE: Best Overall Propane/Electric
The Suburban SW6DE is a staple in the RV industry, offering a proven 6-gallon tank heated by either propane or electricity. Owner feedback consistently praises its durability and straightforward installation. In our evaluation, the porcelain-lined tank and direct spark ignition meet industry standards for longevity and safety. However, its weight of 38 pounds may be a consideration for weight-conscious travelers.
This model is best for RVers who want a reliable, dual-fuel option with a simple retrofit. Skip it if you need a lighter unit or prefer tankless technology for endless hot water.
- Durable porcelain-lined steel tank resists corrosion
- Integrated 120V electric heating element for shore power use
- Direct spark ignition eliminates standing pilot
Pros: Reliable dual-fuel operation; Easy replacement for older Suburban models
Cons: Heavy at 38 pounds
2. Atwood/Girard GSWH-2: Best Tankless Propane
The Atwood/Girard GSWH-2 is a popular tankless propane water heater that provides endless hot water on demand. Based on owner reports and spec sheets, it performs well in moderate climates but may struggle with very cold inlet water. Its compact size and weight make it a favorite for space-constrained RVs. However, the minimum flow requirement means it won’t activate for low-flow faucets.
This unit is ideal for RVers who want to save weight and never run out of hot water. Skip it if you frequently camp in freezing temperatures or prefer a storage tank for consistent pressure.
- On-demand heating saves propane and space
- Compact design fits in tight compartments
- Adjustable temperature control via digital panel
Pros: Unlimited hot water with proper flow; Lightweight at 15 pounds
Cons: Requires minimum water flow to ignite
3. Bosch Tronic 3000 T 4-Gallon: Best Compact Electric
The Bosch Tronic 3000 T is a compact 4-gallon electric water heater designed for point-of-use installation. In our research, it excels for small RVs or as a supplemental unit to provide instant hot water at a sink. The glass-lined tank and adjustable thermostat meet industry durability standards. However, its small capacity means it can only provide a few minutes of shower time before needing to recover.
This heater is best for RVers who need a simple, low-power solution for a single sink or to preheat water for a tankless unit. Skip it if you need to shower multiple people consecutively.
- Mini-tank design fits under sinks
- Glass-lined tank resists rust
- Adjustable thermostat up to 145°F
Pros: Simple plug-and-play installation; Good for small RVs or boost for tankless
Cons: Limited hot water capacity for showers
4. Suburban 520792: Best Drop-In Replacement
The Suburban 520792 is a propane-only version of the popular SW6DE, designed as a direct drop-in replacement for older Suburban water heaters. Owner feedback highlights its ease of installation and consistent heating. The porcelain-lined tank and anode rod meet industry corrosion resistance standards. However, it lacks an electric heating element, so it relies solely on propane.
This model is best for RVers who already have a Suburban propane setup and want a straightforward replacement. Skip it if you want the flexibility of electric operation on shore power.
- Direct replacement for older Suburban models
- Porcelain-lined tank with anode rod
- Includes mounting bracket and hardware
Pros: Simple DIY swap for existing Suburban units; Reliable performance
Cons: Propane only, no electric option
5. Camco 11673: Best Value Electric Tank
The Camco 11673 is a 6-gallon electric water heater that offers a lower-cost alternative to propane units. Based on spec sheets, it provides adequate hot water for small to medium RVs when connected to shore power. The adjustable thermostat and safety hi-limit switch meet standard safety requirements. However, its recovery time is slower than propane models, and it relies entirely on 120V AC.
This heater is best for RVers who primarily camp with full hookups and want a simple electric solution. Skip it if you boondock frequently or need fast recovery for multiple showers.
- Affordable 6-gallon electric option
- Adjustable thermostat with hi-limit safety
- Side inlet/outlet for flexible plumbing
Pros: Budget-friendly price point; Simple electrical hookup
Cons: Slower recovery than propane models
6. EccoTemp i12-LP: Best Portable Propane
The EccoTemp i12-LP is a portable tankless propane water heater designed for outdoor use. Owner feedback indicates it works well for camping showers and dishwashing but is not intended for permanent RV installation. The battery ignition and included shower kit make it convenient for off-grid use. However, its plastic components and outdoor-only rating raise durability concerns in our evaluation.
This unit is best for RVers who want a flexible, take-anywhere hot water solution for outdoor activities. Skip it if you need a permanently mounted, fully integrated RV water heater.
- Portable design with carrying handle
- Battery ignition, no electricity needed
- Includes shower head and hose
Pros: Great for outdoor showers and boondocking; Lightweight at 14 pounds
Cons: Not for permanent installation
7. Atwood 94119: Best Direct Ignition Propane
The Atwood 94119 is a 6-gallon propane water heater with direct spark ignition, designed as a replacement for older Atwood models. Based on aggregated owner feedback, it performs adequately but some users report shorter lifespan than Suburban equivalents. The porcelain-lined tank and anode rod meet basic corrosion protection standards. However, we found that the build quality is not as robust as competitors.
This heater is best for RVers who need a direct replacement for an Atwood unit and are on a tighter budget. Skip it if you prioritize long-term durability or want a dual-fuel option.
- Direct spark ignition for reliability
- Porcelain-lined tank with anode rod
- Interior and exterior access panels
Pros: Simple maintenance with accessible components; Good fit for Atwood-compatible RVs
Cons: Lower build quality compared to Suburban
Frequently Asked Questions
What size RV water heater do I need?
For most RVs, a 6-gallon tank provides enough hot water for a quick shower and dishwashing. Tankless models offer unlimited hot water but require a minimum flow rate. Consider your typical usage and number of occupants when choosing capacity.
Can I install an RV water heater myself?
Many RV owners with basic mechanical and electrical skills can replace a water heater. However, propane connections should be handled by a certified technician to ensure safety. Always follow the manufacturer’s instructions and local codes.
What is the difference between propane and electric RV water heaters?
Propane heaters heat water quickly and work off-grid, but require propane and proper ventilation. Electric heaters are simpler and quieter but need shore power and have slower recovery. Some models combine both for flexibility.
How do I winterize my RV water heater?
Drain the tank completely, bypass the water heater if possible, and use RV antifreeze in the plumbing system. For tankless heaters, follow the manufacturer’s winterization procedure to prevent freeze damage.
Are tankless RV water heaters worth it?
Tankless heaters provide endless hot water and save space and weight. However, they are more expensive, require a minimum flow to activate, and may struggle with cold inlet water. They are best for RVers who prioritize unlimited hot water.
Our Verdict
After comparing specs and owner feedback, the Suburban SW6DE stands out as the top pick for its proven dual-fuel performance and durability. For those seeking endless hot water in a compact package, the Atwood/Girard GSWH-2 is a strong runner-up, provided you can work around its flow requirements.
