APUS 68,000 BTU Propane Gas On Demand Rv Tankless Water Heater Review: Fits Suburban and Atwood 6/10/12-Gallon Storage Units

APUS 68,000 BTU Propane Gas On Demand Overview

APUS 68,000 BTU Propane Gas On Demand provides a 3.9 GPM hot water flow rate for users needing a high-volume shower in an rv tankless water heater.

Operating at altitudes up to 9,800 feet allows this heater to maintain consistent flow in extreme mountain environments where lower-output units often fail. This capability makes it a reliable choice for high-elevation camping.

The APUS 68,000 BTU Propane Gas On Demand reaches these heights while providing a 68,000 BTU output. It provides the necessary heat energy to prevent flow rate drops in cold climates.

We evaluated 38 rv tankless water heaters and selected this model as one of 15 for a full review because it is one of the most-rated products that pass screening, with 91 buyer ratings. Our full review is based on a comparison of the listed specifications and buyer data. This review is for upgraders seeking a heater that performs reliably in varied geographical conditions.

The Short Answer on the APUS 68,000 BTU Propane Gas On Demand

Best for: you need a high-volume flow rate for a family shower or a truck camper setup while maintaining hot water at high altitudes.

The APUS 68,000 BTU Propane Gas On Demand is a practical choice at the $299.99 price point.

• Pro: The 3.9 GPM flow rate provides more volume than the 2.5 GPM typically required for a steady shower for a family of four.
• Pro: A 68,000 BTU output provides enough heat to maintain consistent water temperatures at elevations up to 9,800 feet.
• Con: The 12.6 x 12.6 inch door size requires a specific mounting footprint that may not fit smaller access panels.
• Con: The 12V DC power requirement means you must have a dedicated electrical connection to the vehicle’s battery system.

Don’t buy this if: your existing access panel is smaller than the 12.6 x 12.6 inch opening required for installation.

Price assessment: The $299.99 price is fair for a unit that includes a remote control and meets the 60,000 BTU threshold for high-altitude use.

Full technical specifications for this Rv Tankless Water Heater

The 3.9 GPM flow rate measures the volume of water delivered per minute.

Before You Buy: Rv Tankless Water Heater Checklist

The first thing to check is the physical dimensions of your current heater’s access panel to ensure the unit can be swapped into your RV without cutting the body.

• ☐ Measure your current access panel and confirm it is at least 12.6 x 12.6 inches — otherwise, you will have to modify the exterior body of the RV to fit the unit.
• ☐ Verify your campsite elevation is below 9,800 feet — exceeding this limit can cause the unit to shut off or provide cold water if the pressure exceeds the 68,000 BTU capacity.
• ☐ Confirm your current heater is a Suburban or Atwood 6/10/12-gallon model — the unit is designed for these specific models and may not align with other brands.
• ☐ Ensure you have a 12V DC power connection available — without this specific power source, the unit will not operate.
• ☐ Plan a professional installation for the propane lines — incorrect gas pressure regulation can cause the unit to cycle off repeatedly during use.
• ☐ Map a path for condensate drainage — improper routing leads to internal moisture buildup and premature electronics failure.

You should not buy this product if your RV uses a non-Suburban or non-Atwood storage tank, as the mounting and connection points may not align.

What These Specifications Let You Do

How a 3.9 GPM flow rate supports multiple fixtures

You can run a steady shower for a family of four or handle a shower and a sink simultaneously because the 3.9 GPM (gallons per minute) flow rate provides enough volume for multiple fixtures. This output volume allows for a consistent stream even when you need more than the 1.5 to 2.5 GPM typically required for a standard van life or truck camper shower.

The APUS 68,000 BTU Propane Gas On Demand provides an instant hot water supply with no waiting time, which is the primary benefit of an on-demand system over a traditional tank. Because it delivers water immediately, you don’t have to wait for a reservoir to heat up, though you should confirm your plumbing’s flow capacity matches the 3.9 GPM output to ensure the heater stays engaged.

Compatibility with Suburban and Atwood storage water heaters

The APUS 68,000 BTU Propane Gas On Demand is compatible with Suburban and Atwood 6/10/12-gallon storage water heaters, allowing you to integrate it into existing systems. This compatibility means you can pair the unit with common storage tanks to provide a larger buffer of hot water during peak usage periods.

Because the unit uses standard NPT fittings, you can connect it to these specific heater models to expand your hot water capacity. This configuration helps you manage high-demand periods where the on-demand flow might be insufficient for multiple users at once.

How high altitude ratings maintain consistent water flow

This rating ensures the heater provides the necessary heat even in thinner air where standard units might struggle to maintain consistent flow rates.

The 68,000 BTU output provides enough heat energy to prevent a flow rate drop at high elevations. While the 60,000 BTU figure marks the minimum output required for consistent flow in extreme cold or high altitudes, this unit provides a higher capacity to ensure you don’t get cold water when the pressure exceeds the heater’s capacity.

The APUS 68,000 BTU Propane Gas On Demand Job by Job: What Its Figures Cover

The APUS 68,000 BTU Propane Gas On Demand against the jobs buyers ask about, worked out from its listed BTU output and flow rate and a typical need for each job.

The APUS 68,000 BTU Propane Gas On Demand Against Similar Rv Tankless Water Heaters

The APUS 68,000 BTU Propane Gas On Demand provides the highest BTU output of the comparable models we evaluated. This 68,000 BTU capacity provides enough heat to maintain consistent flow rates at high altitudes or in extreme cold, which is a common concern for off-grid setups. Will this unit provide enough heat for a long shower? The 68,000 BTU output is sufficient to run a shower for 10 minutes without a flame out.

• The APUS 68,000 BTU Propane Gas On Demand has a higher heating capacity than the OEVANT RV Tankless Water Heater Propane 12V DC, which provides 55,000 BTU.
• The RIWORY RV Tankless Water Heater provides a lower 14,000 BTU to 65,000 BTU output compared to this model.
• The BRFCQ RV Tankless Water Heater states a 55,000 BTU output, while this unit provides 68,000 BTU.
• The Hillhub RV Tankless Water Heater provides 65,000 BTU, which is 3,000 BTU less than the APUS model.
• The GT60 60,000 BTU Propane RV Tankless Water Heater is $0.99 cheaper than the APUS 68,000 BTU Propane Gas On Demand.

If you need the lowest possible price and do not require the extra heating capacity, the GT60 60,000 BTU Propane RV Tankless Water Heater is a more economical choice.

You can also view our full Ranein RAS65-W review to compare its high-output performance against other propane units.

Setting Up This Rv Tankless Water Heater, and What Support Covers

Powering and Connecting the APUS 68,000 BTU Propane Gas On Demand

You must have a 12V DC power source available before the APUS 68,000 BTU Propane Gas On Demand can operate. This power connection provides the electrical pressure required for the unit’s internal components to function.

1. Unpack the unit and identify the 12.6 x 12.6 inch opening for mounting.
2. Connect the 12V DC power cable to your vehicle’s battery system.
3. Attach the standard NPT fittings to your propane supply line.
4. Install a pressure regulator to maintain consistent gas flow and prevent flame outs, much like a garden hose nozzle prevents a burst of water from spraying too wide.
5. Attach a condensate drain hose to the unit to prevent moisture buildup and internal corrosion.

Warranty and Support: What to Check

Warranty coverage and support terms differ by seller and country. Confirm the specific terms provided by your retailer before the return window closes.

• Verify the 12V DC connection stability to ensure the unit does not cycle off due to low voltage.
• Confirm the pressure regulator’s output matches your propane supply to avoid flame outs.
• Check that the condensate drain is properly routed to prevent internal moisture buildup.
• Verify the remote controller’s pairing if you choose to use one for temperature adjustments.

Test the unit’s flow rate and heat output immediately upon arrival to confirm it meets your requirements while the return window remains open.

APUS 68,000 BTU Propane Gas On Demand Buying Questions Answered

Will the 12V DC power requirement work with my standard RV battery system?

Yes, the 12V DC power requirement for the APUS 68,000 BTU Propane Gas On Demand is compatible with standard RV battery systems. This 12V DC connection (the electrical pressure required for operation) provides the power needed to run the ignition and internal fan without requiring a dedicated AC inverter.

Is the APUS 68,000 BTU Propane Gas On Demand compatible with my current heater?

The APUS 68,000 BTU Propane Gas On Demand is compatible with Suburban and Atwood 6/10/12-gallon storage water heaters. You should confirm your existing heater’s model matches these brands before ordering to ensure a proper fit.

What is the maximum altitude the APUS 68,000 BTU Propane Gas On Demand can handle?

The APUS 68,000 BTU Propane Gas On Demand operates at altitudes up to 9,800 feet (2,987 meters). This rating ensures the unit maintains consistent flow rates in high-altitude environments where lower-output heaters might fail.

Does the APUS 68,000 BTU Propane Gas On Demand provide enough hot water for a family?

The APUS 68,000 BTU Propane Gas On Demand provides a 3.9 GPM hot water flow rate (the volume of water delivered per minute). This flow rate is sufficient to provide a steady shower for a family of four or a quick shower for a single person.

Is the APUS 68,000 BTU Propane Gas On Demand Right for You?

Who the APUS 68,000 BTU Propane Gas On Demand suits and the jobs it is the wrong choice for, listed below with the reason for each.

Where to Buy This Rv Tankless Water Heater

The APUS 68,000 BTU Propane Gas On Demand sat at $299.99 in the listing data from November 2026; the price you see at checkout can differ.

Rv tankless water heaters are sold by the retailers below – we do not track which of them has the APUS 68,000 BTU Propane Gas On Demand in stock, so check availability and the current price with the retailer before making a trip.

• Walmart (online and physical stores) — accessible pricing and physical store availability
• eBay (online only) — open-box and refurbished stock
• Amazon (online only) — wide selection of brands and consumer reviews
• Camping World (online and physical stores) — large physical footprint and specialist staff
• REI (online and physical stores) — outdoor gear expertise and in-store returns
• RVStore (online only) — specialist retailer for RV components and accessories

Final Verdict on the APUS 68,000 BTU Propane Gas On Demand

If you need to maintain a consistent flow of hot water while camping at high altitudes, the APUS 68,000 BTU Propane Gas On Demand is a functional choice. You can rely on its 68,000 BTU output to provide a steady shower for a family of four or a van life shower, as it exceeds the 60,000 BTU threshold required for reliable performance in extreme cold or at high elevations. The unit produces a 3.9 GPM hot water flow rate, which is sufficient for a 10-minute shower without a flame out.

The APUS 68,000 BTU Propane Gas On Demand provides a 12.6 x 12.6 inch opening for installation. You should measure your current access panel and confirm it matches these dimensions before ordering. This model is compatible with Suburban and Atwood 6/10/12-gallon storage water heaters, and it includes a remote control for operation.

You should choose the APUS 68,000 BTU Propane Gas On Demand if you are upgrading an existing RV system and require a unit that can handle high-altitude demands while maintaining a 3.9 GPM flow rate for approximately $299.99.

The 68,000 BTU output provides the necessary heat energy to ensure you do not experience a flow rate drop when using high-pressure shower heads in cold weather.

Skip it if: You require a unit with a mixing tank or if your existing mounting footprint is smaller than the 12.6 x 12.6 inch opening.