The RV Tankless Water Heaters That Provide Hot Water for Truck Campers

What We Recommend and Why

The right rv tankless water heater (recreational vehicle tankless water heater) provides the ability to enjoy a consistent, steaming shower without waiting for a tank to refill. A high-output unit ensures you maintain a steady temperature even when the water demand is at its peak during a long shower.

The FOGATTI InstaShower 8 Pro achieves this result by delivering 60,000 BTUs of heating capacity to keep water hot and flowing. You might consider the Ranein RAS65-W 65,000 BTU RV Tankless Water Heater if you prefer a 3.9 GPM flow rate, or the APUS 68,000 BTU Propane Gas On Demand for the highest available BTU output in this group.

We selected these models by screening 38 rv tankless water heater (recreational vehicle tankless water heater) options and comparing 10 products here at Refrigerant Recovery Pro. The price range for these selections is $299.99 to $629.99, and the median price of the 10 products in our comparison is $449.50.

Rv Tankless Water Heaters for Truck Camper Use: Price, Rating and Specs Compared

Prices are approximate and move frequently – check the current price before deciding. “Not stated” means the manufacturer listing does not give that figure – we do not estimate it.

Among our top picks, the value leader is APUS 68,000 BTU Propane Gas On Demand because it provides the highest BTU output for the lowest price.

The Full Review of Each Pick for Truck Camper Use

The 3 picks below are reviewed in the same order as the cards above.

APUS 68,000 BTU Propane Gas On Demand

The APUS 68,000 BTU Propane Gas On Demand provides a high-efficiency solution for truck camper hot water by offering the highest BTU output among the selections. This unit is designed to provide a steady shower for a family of four, as its 3.9 GPM flow rate exceeds the 2.5 GPM requirement for that task.

What we like: This model provides a 68,000 BTU output, which allows it to maintain hot water at 10,000 ft elevation. The 3.9 GPM flow rate is among the highest in our comparison, providing enough volume for high-demand use in a towable camper.

Keep in mind: The 12.6 x 12.6 inch opening is the smallest door size of the three picks, which may limit its suitability for certain mounting configurations.

Ranein RAS65-W 65,000 BTU RV Tankless Water Heater

The Ranein RAS65-W 65,000 BTU RV Tankless Water Heater offers a high-value mid-range option for truck campers, balancing a high flow rate with a 4.4 rating from 681 buyers. It provides enough volume for a steady shower for a family of four with its 3.9 GPM flow rate.

What we like: This unit features a 65,000 BTU output and a 3.9 GPM flow rate, both of which are sufficient to maintain hot water at 10,000 ft elevation. It also includes an external water outlet for direct shower connections.

Keep in mind: The 15″ x 15″ door size is a standard mounting footprint, but the 12.8 x 12.8 inch opening is smaller than the 15″ x 15″ opening of the FOGATTI model.

FOGATTI InstaShower 8 Pro

The FOGATTI InstaShower 8 Pro is the premium high-performance choice for truck camper hot water, offering a 15″ x 15″ door size and a 4.3 rating. It is capable of maintaining hot water at 10,000 ft elevation due to its 60,000 BTU output.

What we like: The InstaShower 8 Pro features a 15″ x 15″ door size, which is the largest mounting footprint among the selections. It also includes a remote control and a flame intensity control to adjust output during summer months.

Keep in mind: With a flow rate of 2.9 GPM, this model provides less volume than the APUS or Ranein units, which both offer 3.9 GPM.

Point of use tankless units, like those listed here, are installed under a sink or on an exterior wall to provide water to a specific area, whereas whole house units are designed to provide hot water to every fixture in a building simultaneously. These units use a 12V DC power connection—the electrical pressure required for operation—to power the system from a house battery bank without needing an AC inverter. Before ordering, measure your available mounting space and confirm it matches the door size, such as the 15″ x 15″ opening on the FOGATTI model, to ensure the unit fits your camper’s layout.

What to Look For in a Rv Tankless Water Heater for Truck Camper Use

Selecting a 60,000 BTU output capacity for high altitude use

Prioritize a BTU output of at least 60,000 BTUs to ensure you maintain consistent flow rates at high altitudes or in extreme cold. The APUS 68,000 BTU Propane Gas On Demand provides the highest heat energy per hour among the options we evaluated, followed by the Ranein RAS65-W 65,000 BTU RV Tankless Water Heater at 65,000 BTUs. The FOGATTI InstaShower 8 Pro provides 60,000 BTUs, which is the minimum output required to maintain consistent flow rates at high altitudes or in extreme cold. While these units strive to emulate the flow consistency and longevity of the Bosch Trima industrial-grade benchmark, they differ from the Suburban Tankless high-end professional standard by focusing on compact propane-powered designs for mobile use.

Measuring compact footprint dimensions and door sizes for installation

Measure your available mounting space and confirm the door size before ordering, as different models require specific clearances for installation. The FOGATTI InstaShower 8 Pro and the Ranein RAS65-W 65,000 BTU RV Tankless Water Heater both specify a 15″x15″ door size, which is the standard mounting footprint for most aftermarket RV tankless installations. The APUS 68,000 BTU Propane Gas On Demand has a smaller 12.6 x 12.6 inch opening, providing more flexibility in tight truck camper layouts. Because these units are designed for door mounts, ensure your camper’s interior layout allows for the specific depth and width of the chosen model.

Verifying propane compatibility and water pressure switch functionality

Verify that your truck camper’s propane system can supply the required fuel, as all three of these selections state they use propane as the fuel source. These units use a water pressure switch—a component that prevents dry firing and protects the unit—to trigger the heating process when you turn on the tap. A buyer opens the valve, turns on the water, and the switch detects flow to ignite the burner. The system then provides hot water on demand without the need for a large storage tank. Since these are propane-powered, they do not require the 12V DC power source to generate heat, though they do use it for the remote control systems.

Achieving a 2.5 GPM water flow rate for family showers

You need a flow rate of at least 2.5 GPM to provide a steady shower for a family of four, and all three models exceed this requirement. The APUS 68,000 BTU Propane Gas On Demand and the Ranein RAS65-W 65,000 BTU RV Tankless Water Heater both state a 3.9 GPM flow rate, which is sufficient for high-volume use. If your camper’s plumbing restricts flow too much, the heater may not trigger; therefore, check that your internal piping supports these GPM values before purchase.

View our curated list in our top picks.

Find your perfect match in the audience checklist.

View the technical differences in the comparison table.

Make sure to review gas input pressure requirements to ensure your system is compatible with your fuel source.

Each Job, What It Takes and How the Picks Do

Each row is a job this page’s buyers ask about, worked out from each pick’s listed flow rate and BTU output and a typical need for the job.

Each need is a typical figure for that job rather than a manufacturer claim, and the picks’ results come from their listed specifications. Where your job is bigger or smaller than the typical one, go by your own figure.

Who Buys Rv Tankless Water Heaters, and What It Really Costs

See the full range of products in the scope.

Check the technical specs in the requirements.

View the installation and warranty info in the setup and warranty notes.

You can find a detailed breakdown of rv tankless water heater costs to see what features different price points offer.

What It Takes to Run One, and What to Verify

Power Requirements and System Setup

This allows for off-grid operation in your truck camper without needing a dedicated AC inverter.

Before you install your new heater, you must have a propane fuel source and a mounting surface. All three models require a propane supply and a dedicated space for the unit to operate.

• The APUS 68,000 BTU Propane Gas On Demand requires a 12V DC power connection and standard NPT fittings to connect your gas lines.
• The Ranein RAS65-W 65,000 BTU RV Tankless Water Heater includes an external water outlet for a direct shower connection, but you must confirm your mounting area allows for the 15″W x 15″H footprint.
• The FOGATTI InstaShower 8 Pro requires a propane supply and is compatible with 12V DC power to maintain hot water at elevations up to 9800 feet.

To ensure consistent performance, you should purchase a propane regulator to maintain consistent gas flow and prevent flame outs, as well as a condensate drain hose to prevent moisture buildup and internal corrosion. You must also verify your local venting requirements to ensure safe exhaust in the small space of a truck camper.

Verifying Your Purchase

Warranty cover differs by seller and country, so you should confirm the specific terms provided by the retailer before the return window closes. Verify these details to ensure your investment is protected.

• Confirm the 12V DC power connection is stable, as inconsistent voltage can cause the unit to cycle off during use.
• Check that the 15″x15″ or 12.6″x12.6″ door size fits your specific mounting location to avoid clearance issues.
• Verify that the propane lines are securely attached to the NPT fittings, as a loose connection can lead to a flame out.
• Ensure the remote controller, included with the Ranein and FOGATTI models, pairs correctly with the unit for temperature adjustments.

The first thing to do the day it arrives is to perform a dry cycle to check for leaks in the plumbing connections while the return window is still open.

Get answers to common concerns in the FAQ.

Explore our comprehensive analysis in the detailed reviews.

Learn how to choose the best unit in the buying guide.

Rv Tankless Water Heaters for Truck Camper Use: The Questions This Choice Raises

How much does it cost to run this heater on propane vs. electricity?

Running an rv tankless water heater on propane involves fuel consumption based on the BTU output, while electricity costs depend on the amperage draw of the unit. Since the FOGATTI InstaShower 8 Pro, Ranein RAS65-W, and APUS 68,000 BTU all use propane, you can calculate your trip needs by the BTU rating and your tank size. The data for these specific models does not state a fuel consumption rate per minute, so you must check your specific propane tank’s capacity against the BTU output of the unit.

How much clearance do I need around the unit for ventilation and safety?

Clearance requirements for an rv tankless water heater depend on the specific model’s ventilation needs to prevent overheating and ensure safe operation. The door size for these units ranges from 12.6 x 12.6 inches to 15″x15″, but the required clearance for airflow is not stated in the data for any of these models. You should verify the specific mounting footprint and ventilation gap with the manufacturer to ensure the unit fits your truck camper’s interior.

Which truck camper water heater provides the best flow?

The truck camper water heater that provides the best flow is the APUS 68,000 BTU Propane Gas On Demand or the Ranein RAS65-W 65,000 BTU, both of which state a 3.9 GPM flow rate. These units provide enough volume to meet the 2.5 GPM requirement for a steady shower for a family of four. The FOGATTI InstaShower 8 Pro provides a lower flow rate of 2.9 GPM.

Which model is best for high-altitude camping?

If you need to maintain hot water at 10,000 ft elevation, the APUS 68,000 BTU Propane Gas On Demand is a strong option because it provides 68,000 BTU of power. The Ranein RAS65-W 65,000 BTU and the FOGATTI InstaShower 8 Pro also provide enough power for high altitudes, as both state a 60,000 BTU or higher output. Each of these three options is rated to operate at altitudes up to 9,800 feet.

Who Should Skip These Rv Tankless Water Heaters

If you require a system that provides a high-volume flow rate for multiple simultaneous fixtures, these units may not suit your needs as they are designed for single-point use like a shower or sink. These models are sized for the space and output constraints of a truck camper rather than large-scale RV setups.

For larger residential-style applications or setups requiring higher volume outputs than these compact units provide, you should look for industrial-grade systems. You may also find more specific configurations in our guide for best rv tankless water heater for high altitude.