Best Small Camper Water Heaters for RV Living and Travel
If you need endless hot water on the road without heavy storage tanks, a compact tankless RV water heater is the right choice. This guide highlights five compact, high‑efficiency options ideal for campers, travel trailers, and small RVs. Each pick is best for different use cases—from busy families needing steady showers to solo travelers seeking reliable exterior access. Below you’ll find concise comparisons, why each model fits, and practical buying tips to help you choose.
| Product | Best For | Highlights |
|---|---|---|
| APUS RV Tankless Water Heater | Family trips, high daily use | High BTU, 3.9 GPM, high-altitude ready |
| Orbek RV Tankless Water Heater (Black/White) | Upgrade/replacement, versatile installation | 60,000 BTU, remote control, CSA certified |
| Xenjum RV Tankless Water Heater | Off-grid or high-demand showers | 65,000 BTU, dual outlets, remote control |
| NOVIEEX RV Water Heater | Anti-freeze protection, safety | 60,000 BTU, CSA certified, 3.6 GPM |
| CAMPLUX Under-Sink Tankless | Compact spaces, apartments or tiny RVs | 6 kW, energy-efficient, temperature display |
Note: All products listed are designed for on-demand hot water in RVs and small campers. This guide focuses on compact units that fit tight spaces, are easy to install, and operate reliably at varying elevations.
APUS RV Tankless Water Heater
Best for RV families that need reliable, on-demand hot water and simple setup. APUS delivers 68,000 BTU with 3.9 GPM, ensuring rapid showers and kitchen tasks. The unit is designed to operate at high altitude, supporting trips to elevated destinations. It also features a compact footprint suitable for tight RV spaces.
Selected for: steady hot water during busy mornings, high altitude use, and straightforward RV installation. Limitation: installation requires compatible mounting and venting; ensure your RV’s available space matches the 14.96″ x 14.96″ x 14.18″ footprint.
Orbek RV Tankless Water Heater (Black/White)
Best for upgrading an existing RV system or replacing an older electric/ tank heater. Orbek provides 60,000 BTU of heat, with a 12V DC system and a remote control for convenient temperature management. It supports three door options and is compatible with various RV brands, making retrofits easier.
Selected for: upgrading efficiency, remote temperature control, and compatibility with existing RV hookups. Limitation: detailed venting and clearance requirements must be confirmed for your specific RV model.
Xenjum RV Tankless Water Heater
Best for off-grid living or high-demand households needing rapid hot water with dual outlets. Xenjum delivers up to 65,000 BTU and 3.9 GPM, with interior and exterior outlets for flexible hot water distribution. A remote control enables temperature adjustments, and the unit is designed for high-altitude operations.
Selected for: dual outlets for kitchen and bath use, off-grid capability, and remote control convenience. Limitation: higher BTU units can demand more electrical or propane considerations; verify supply capacity for your RV.
VEVOR RV Tankless Water Heater
Best for travelers who want a balance of power and simplicity. The VEVOR unit offers 42,000 BTU with a 15 x 15 inch black door, and a remote controller for easy on-the-go temperature adjustments. It emphasizes all-season use with segmented combustion for stable temps year-round.
Selected for: cost-effective, compact operation with straightforward controls. Limitation: lower BTU than some competitors may affect hot water throughput during peak simultaneous uses.
Novieex RV Water Heater
Best for anti-freeze protection and safety features in variable climates. Novieex provides 60,000 BTU with 3.6 GPM and features basic safety protections, including auto‑control logic to maintain stable temperatures between 95°F and 123°F. It is CSA certified for camper use.
Selected for: reliable temperature control and freeze protection in cold setups. Limitation: real-world performance can depend on water inlet temperature and flow rate; verify your water sources before upgrading.
Buying Guide: How To Choose A Small Camper Tankless Water Heater
What size and capacity do you need?
Consider your RV’s available space, the number of occupants, and typical water usage. Look for BTU ratings and flow rates (GPM) that match your shower and kitchen needs. Higher BTU typically supports multiple simultaneous outlets better but may require more fuel or power.
Where will you install it?
Many models are designed for under-sink or cabinet installs with 12V DC operation. Measure the installation space and check door openings, venting, and clearance. Some units replace storage heaters and may have standard dimensions for easy retrofit.
Altitude and climate considerations
RV travel often occurs at altitude. Choose a model explicitly advertised as “high altitude ready” or with smart combustion technology to minimize cold spots and ensure stable temperatures at high elevations.
Power source and fuel type
Tankless RV heaters can run on propane or electricity. If you have a large solar setup, electric 110V units may save propane; if you rely on propane, ensure your tank can supply the required BTU for your peak usage.
Controls and safety features
Look for remote controls, digital displays, frost protection, and auto shutoff features. A unit with temperature range from roughly 95°F to 123°F helps cover most comfort needs without manual adjustments.
Installation and compatibility
Check compatibility with your RV’s existing plumbing, gas lines, and venting. Some models come with built-in pressure regulators and remote display units, which can simplify installation and operation.
Maintenance and reliability
Tankless heaters generally offer longer service lives with fewer moving parts than storage tanks. Consider models with corrosion-resistant heat exchangers and customer support from the brand. Periodic vent cleaning helps maintain performance in dusty RV environments.
Warranty and certification
CSA or other third‑party certifications indicate compliance with safety standards. Warranty terms vary; verify what is covered and for how long to protect your investment in travel reliability.
Frequently Asked Questions
- What size RV water heater do I need for a family? Choose a unit with at least 60,000 BTU and a flow rate around 3.5–4.0 GPM to support multiple uses without long waits.
- Can I install a tankless heater myself? Some models are designed for straightforward RV installations, but verify venting, gas lines, and electrical connections. Professional installation is advised if unsure.
- Are tankless RV heaters safe at high altitudes? Yes, choose models advertised as high-altitude ready or those with adaptive combustion technology to maintain stable temperatures.
- Do these units work with both propane and electric hookups? Most are propane‑powered; some offer 12V electrical options or hybrids. Check the specific fuel configuration of each model.
- What maintenance do RV tankless heaters require? Routine vent cleaning, checking for gas leaks, and periodic inspection of water connections help maintain performance and safety.
- Is a remote control essential? Remote control improves convenience, allowing temperature adjustments without opening cabinets in tight RV spaces.