On-Demand Hot Water for Your RV

RV Tankless Water Heater

On-Demand Hot Water

No waiting for a tank to reheat

Up to 65,000 BTU

Powerful propane heating with staged combustion

Built for RV Travel

High-altitude capability and freeze protection

3 products

On sale
KINGRVER RV Tankless Water Heater 48000btu without Door, Propane Gas, DC 12V
KINGRVER RV Tankless Water Heater 48000btu without Door, Propane Gas, DC 12V Sale priceFrom $319.99 Regular price$549.99
On sale
KINGRVER RV Tankless Water Heater 65,000 BTU without Door, Propane Gas, DC 12V
KINGRVER RV Tankless Water Heater 65,000 BTU without Door, Propane Gas, DC 12V Sale priceFrom $399.99 Regular price$599.99
On sale
RV Tankless Water Heater with Mixing Valve, 65,000 BTU Instant Hot Water, 2.5 GPM Propane Gas, Camper Water Heater with Wired Controller
RV Tankless Water Heater with Mixing Valve, 65,000 BTU Instant Hot Water, 2.5 GPM Propane Gas, Camper Water Heater with Wired Controller Sale priceFrom $395.99 Regular price$699.99

FIND YOUR PERFECT FIT

Which RV Tankless Water Heater Fits Your Needs?

FOR WEEKEND TRAVELERS

Everyday Comfort

On-demand hot water for everyday RV routines.

48,000 BTU

Up to 1.8 GPM

Explore Model

FOR FREQUENT RVERS

More Heating Power

More hot water for busy families—even in colder weather.

65,000 BTU

Up to 2.7 GPM

Explore Model

FOR COMFORT SEEKERS

Steadier Showers

Less temperature swing. More shower comfort.

65,000 BTU + Mixing Valve

2.5 GPM

Explore Model

REPLACEMENT GUIDE

RV Water Heater Replacement Compatibility

Find your current water heater model below and match it with the corresponding KINGRVER door size.

15" × 15" Door

Existing BrandTank CapacityExisting Model
Suburban 6 Gallon SW6D (5138A/E)SW6DE (5139A/E)SW6DEL (5140A/E)SW6DEC (5223A/E)SW6DELC (5224A/E)
Suburban 4 Gallon SW4D(5135A)SW4DE(5136A)

Door size is not the installation cutout size. Confirm opening dimensions and connections before ordering.

COMPLETE YOUR RV UPGRADE

RV Tankless Water Heater Doors

For RV Tankless Water Heater – KINGRVER 15 x 15 Inches Door kit
For RV Tankless Water Heater – KINGRVER 15 x 15 Inches Door kit Sale price$59.99
Color
For RV Tankless Water Heater – KINGRVER 15 x 18 Inches Door kit
For RV Tankless Water Heater – KINGRVER 15 x 18 Inches Door kit Sale price$69.99
Color
For RV Tankless Water Heater – KINGRVER 18 x 18 Inches Door kit
For RV Tankless Water Heater – KINGRVER 18 x 18 Inches Door kit Sale price$79.99
color

COMMON QUESTIONS

RV Tankless Water Heater FAQs

Find quick answers about KINGRVER products, installation, and support.

What does the built-in mixing tank do?

It blends water before it reaches the tap to help keep your shower comfortably steady, even when you pause and restart the water.

Is the exterior door included?

The default configuration does not include a door. If you need one, select the size and color you need on the product page.

Do I still need to winterize my RV tankless water heater?

Yes. Built-in freeze protection requires power and propane and does not replace winterization. Follow your model’s instructions to drain and protect the heater during winter storage.

Support & Resources

Fast & Free Shipping

Ships in 3 business days. Delivered in 3–7 days

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Expert RV Support

Here to help with installation and beyond

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12–24 Month Warranty

Reliable coverage for peace of mind

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