If you’re searching for the best suburban propane heater for your RV or camper, this guide presents top-rated and durable options designed to provide reliable hot water on the road. We’ve selected 5 highly effective propane water heaters with varying capacities and innovative features, including tankless and electric hybrid models. Whether you prioritize quick hot water delivery, energy efficiency, or ease of installation, this guide covers the essentials to meet your RV heating needs.
| Product | Capacity | Fuel Type | Special Features |
|---|---|---|---|
| Suburban Advantage RV Tank Water Heater SW6DE | 6 Gallons | Propane + Electric Element | Porcelain-lined tank, Direct Spark Ignition (DSI), replaceable anode rod |
| KINGRVER 65,000 BTU RV Tankless Water Heater | Tankless | Propane | Instant hot water, high-altitude compatible, freeze protection |
| VELPAX Propane Tankless Water Heater 4.74 GPM | Tankless | Propane | Digital display, multi-safety protections, stainless steel body |
| Suburban Water Heater SW12DEL, 12 Gallon | 12 Gallons | Propane (12V Relay) | Large capacity, suitable for bigger RVs |
| Fistihon RV Water Heater Electric Conversion Kit | 6 Gallons (Hybrid) | Propane + 120V Electricity | Conserves propane, adjustable thermostat, easy installation |
Suburban Advantage RV Tank Water Heater SW6DE – 6 Gallon

The Suburban Advantage SW6DE features a durable porcelain-lined steel tank that mirrors the longevity of residential water heaters, ensuring years of reliable hot water supply in your RV. It incorporates a replaceable anode rod, which enhances protection against tank corrosion and acts as a drain for easier maintenance. The model offers flexible power options — propane heating combined with an optional electric element for campsite or generator power, increasing versatility. It employs a Direct Spark Ignition (DSI) and utilizes an Incoloy electric element ensuring rapid and efficient heating, great for smaller RV spaces needing 6 gallons of capacity.
KINGRVER 65,000 BTU RV Tankless Water Heater

This KINGRVER propane tankless water heater delivers instant hot water with a high output of 65,000 BTU, supporting consistent flow even at low water pressure from just 0.5 GPM activation. Its design suits all RVs with an opening size of 12.7″ x 12.7″, and optional door kits in multiple sizes for easy refitment. Engineered for high altitudes over 9,800 feet, it features an automatic freeze protection function that activates below 42.8°F to prevent freezing pipes, making it ideal for colder climates. This heater excels for users looking for on-demand hot water without the bulk of a tank.
VELPAX Propane Tankless Water Heater 4.74 GPM Indoor Use

The VELPAX tankless propane water heater features a 4.74 gallons per minute (GPM) flow rate, ideal for simultaneous use of 2-3 points such as showers and kitchen sinks. It provides a maximum temperature rise of 149°F and maintains steady temperature control via its digital display. Safety features include flame failure detection, anti-freeze protection, and overheating safeguards. The stainless steel construction enhances durability, while oxygen-free copper reduces heat loss, ensuring efficient operation. This indoor use water heater is perfect for users seeking a compact, energy-saving system with precise temperature control.
Suburban Water Heater SW12DEL 12 Gallon Capacity

The Suburban SW12DEL tank water heater offers a larger 12-gallon capacity, perfect for bigger RVs or more frequent hot water use. It includes a built-in 12V relay for reliable propane operation. This model is engineered for long-term durability and steady hot water delivery. The sizeable tank reduces wait times for full hot water availability, making it suitable for families or users needing bulk water heating. Though basic in features compared to tankless models, it provides trusted performance with proven Suburban quality designed specifically for RV environments.
Fistihon RV Water Heater Electric Conversion Kit

This innovative Fistihon electric conversion kit upgrades your existing Suburban or Atwood propane water heater by converting it to use 120V electric heating, allowing you to conserve propane and fuel costs. The kit comes with easy installation components including brass bushings, color-coded wiring, and an adjustable thermostat for full control over water temperature. An independent on/off switch enhances convenience and safety during use. The kit is ideal for RV users who want a hybrid heating system with the flexibility of electric or propane heating based on availability or preference.
Buying Guide for Suburban Propane Heaters
Choosing the best suburban propane heater for your RV depends on several important factors to ensure optimal performance, convenience, and durability.
1. Tank vs. Tankless Design
- Tank Water Heaters store a predetermined amount of hot water, ideal for consistent supply but limited capacity. They generally require less complex installation and provide hot water during power or propane supply interruptions.
- Tankless Water Heaters heat water on demand, saving space and fuel. They provide endless hot water but require sufficient water pressure and power. Ideal for users prioritizing fuel efficiency and continuous flow.
2. Capacity and Flow Rate
- Choose a capacity that matches your household size and hot water demand. Small RVs usually benefit from 6-gallon tanks, while larger families might need 12 gallons or tankless units with higher GPM.
- Flow rate (GPM) is crucial for simultaneous showers or sink use — higher GPM units handle multiple faucets without temperature drops.
3. Fuel and Power Options
- Most suburban heaters primarily use propane, but many offer electric elements or hybrid conversion kits for flexibility.
- Consider your typical campsite power access and propane availability when choosing a model.
4. Installation and Compatibility
- Verify the heater fits your RV’s heater opening and plumbing setup.
- Tankless models may require professional installation for venting and wiring.
- Conversion kits should be compatible with your current water heater model.
5. Additional Features
- Direct Spark Ignition (DSI) offers reliable ignition without pilot lights.
- Freeze protection is essential for colder climates to prevent pipe damage.
- Maintenance features like replaceable anode rods prolong tank life.
- Digital temperature displays and thermostats enhance control precision.
By weighing these factors against your specific hot water needs and RV conditions, you can select a suburban propane heater that offers the best balance of efficiency, reliability, and convenience.