Buying guide · 10 min read · Updated October 2, 2026

5 Best RV Water Heater For Boondocking in 2026: A Practical RV Guide

Five RV water heaters compared for off-grid camping by propane burner, 12 volt control needs, tank or tankless design and altitude notes.

By Bowen HigginsRV Editor at RV Gear Lab5 products comparedSpec-sheet researched

Boondocking changes the water heater question, because there is no shore power to fall back on and every amp comes from a battery. Propane makes the heat, but a tankless unit still needs 12 volts, and an electric element does nothing without an inverter or generator.

The five picks cover two tank heaters with propane burners, a propane and electric hybrid and two tankless units. Never trust a headline flow rate without its temperature rise, and treat any 12 volt draw as a battery load.

RV Gear Lab field notes

The Rig Fit Check

Start with the job: FOGATTI HybridShower 6 Ultra RV Tank Water Heater leads this shortlist for Off-grid tank replacement. Use that fit as a reference point, then compare the alternatives against your own space and workload.
Specs that separate the picks: The first details to compare are 6 gallon hybrid, 12,000 BTU, 12 gallon Suburban DSI, 6 gallon propane and electric. Confirm the exact model and included components before ordering.
Trade-off to plan for: Check venting and cutout fit

Before you buy

What Matters Before You Choose an RV Water Heater For Boondocking

Key buying criteria so you get the right fit the first time.

01
Battery draw
A tankless heater needs 12 volts for its fan and controls, and a tank heater needs it only for ignition. A battery bank runs a tankless longer than you might think but still adds load. Check the stated draw.
02
Tank versus tankless
A tank keeps a hot reserve and recovers on propane, while a tankless unit gives continuous hot water. Boondockers with small batteries often like a tank. Pick by water use.
03
Propane use
A larger burner uses propane faster. APUS lists 80,000 BTU and FOGATTI 12,000 BTU for a tank. Check the BTU and your tank size.
04
Electric element
An electric element does nothing off-grid without a generator or large inverter. Treat it as a bonus. Check the wattage.
05
Temperature rise vs flow
A GPM claim needs inlet and outlet temperatures. Cold groundwater lowers flow. Look for a stated rise.
06
Install and venting
Propane appliances need venting per the manual. Follow it and local codes. Check named certifications.

Our standards

Why You Can Trust RV Gear Lab

At RV Gear Lab, we compare products based on rig fit and power or hookup compatibility, verified specifications, usability, setup requirements, weight, durability, and real-world trade-offs. We do not rank products purely on marketing claims or commission rates.

We have not personally tested every product listed. Where hands-on testing is not available, recommendations are based on verified manufacturer specifications, product documentation, use-case fit, and comparative research.

How we review RV gear →

Detailed reviews

The 5 best rv water heater for boondocking, explained

Best Overall · 1 of 5

FOGATTI HybridShower 6 Ultra RV Tank Water Heater

6 gallon hybrid, 12,000 BTU
1440W electric element
Powered titanium anode

Check price on Amazon

Best for: Off-grid tank replacement

Our take

It is the best match for boondockers who want a propane tank heater with a stated burner.

Why it made the shortlist

FOGATTI HybridShower 6 Ultra is a 6 gallon tank heater with a 12,000 BTU propane burner and a 1440 watt electric element. The listing says it has a built-in powered titanium anode in place of a magnesium rod and offers propane, electric or hybrid modes.

Against CAMPLUX White, it lists a powered anode and a stated burner.

Think of it as the pick for off-grid tank replacement.

What works

12,000 BTU propane burner
Propane, electric or hybrid modes
Powered titanium anode
Drop-in for many 6 gallon cutouts

Watch out for

Check venting and cutout fit

The catch: Against Suburban SW12DE, it is a smaller tank with a hybrid mode.

Check price on Amazon

Best Large Tank · 2 of 5

Suburban SW12DE 12-Gallon RV Water Heater

12 gallon Suburban DSI
Porcelain-lined tank
Replaceable anode rod

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Best for: Large families

Our take

It suits families who want a large reserve to avoid cold showers.

Why it made the shortlist

Suburban SW12DE is a 12 gallon RV water heater with direct spark ignition and an electric element. The listing says it has a porcelain-lined steel tank, a replaceable anode rod and an optional electric element for campsite or generator power.

Against the tankless units, it needs no big 12 volt draw beyond ignition.

Buyers focused on large families will find it a sensible match.

What works

Large 12 gallon reserve
Replaceable anode rod
Direct spark ignition
Optional electric element

Watch out for

Slow recovery on propane

Check price on Amazon

Best Value Hybrid · 3 of 5

CAMPLUX 6 Gallon RV Water Heater

6 gallon propane and electric
Interior control panel
Porcelain-lined tank

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Best for: Mid-size tanks

Our take

It suits boondockers who want interior mode switching at a moderate price.

Why it made the shortlist

CAMPLUX 6 Gallon is a propane and electric hybrid that drops into most Suburban and Dometic 4 to 6 gallon cutouts. The listing says you can switch modes from inside the RV and describes a porcelain-lined tank with an anode rod.

Against FOGATTI HybridShower 6, it costs less. Against Suburban SW12DE, it has an interior control panel.

What works

Interior panel for modes
Porcelain-lined tank with anode rod
Drop-in for 4 to 6 gallon cutouts

Watch out for

Smaller 6 gallon tank
Check venting and cutout fit

Check price on Amazon

Best High-Output Tankless · 4 of 5

APUS RV Tankless Water Heater

80,000 BTU propane, 12V DC
95 to 124°F control
Fits 13 x 13 inch cutout

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Best for: Long showers

Our take

It suits families who want long showers and have a good battery bank.

Why it made the shortlist

APUS RV Tankless is an 80,000 BTU propane heater with 12 volt DC power that fits a standard 13 by 13 inch cutout. The listing says it keeps water between 95 and 124 degrees F with intelligent temperature control and is built to hold performance at altitude.

Against Hillhub 65K, it has the highest burner here.

It is a natural fit for long showers.

What works

80,000 BTU burner
Fits a standard 13 x 13 inch cutout
Intelligent temperature regulation
Altitude performance noted

Watch out for

Needs 12V power to run
No flow stated with a temperature rise

Check price on Amazon

Best Mid-Priced Tankless · 5 of 5

Hillhub RV Tankless Water Heater 65

65,000 BTU propane tankless
95 to 124°F control
CSA certified per listing

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Best for: Buyers comparing capacity, compatibility, included components and storage needs

Our take

It suits owners who want a CSA-listed tankless at a mid price.

Why it made the shortlist

Hillhub RV Tankless is a 65,000 BTU propane heater with staged combustion that holds a set temperature from 95 to 124 degrees F. The listing says it delivers up to 3.9 GPM, fits a 12.8 inch opening and is CSA certified.

Against APUS 80K, it has less burner at a lower price. Against Suburban SW12DE, it heats on demand.

Think of it as the pick for mid-price tankless.

What works

Staged combustion holds temperature
CSA certified per the listing
Fits a 12.8 inch opening

Watch out for

Needs 12V power to run
GPM has no stated temperature rise

Check price on Amazon

Methodology

How We Built This Shortlist

Each pick was assessed across 5 criteria weighted for real-world use.

Power source

We separated propane burners from electric elements and 12 volt control needs.

Tank or tankless

Reserve tanks were compared with on-demand units.

Burner output

BTU ratings were compared.

Altitude

Altitude notes were compared.

Battery load

We noted which units draw 12 volts continuously.

Decision guide

Match an RV Water Heater For Boondocking to Your RV

By Dry Camp Style

Your situation	Recommended pick	Why
Small battery, tank heater	FOGATTI HybridShower 6	Tank, 12,000 BTU burner.
Large family, big reserve	Suburban SW12DE	12 gallon tank.
Value hybrid	CAMPLUX White	Interior panel.
Long showers, big battery	APUS 80K	80,000 BTU.
Mid-price tankless	Hillhub 65K	65,000 BTU, CSA listed.

By Budget

Budget	Recommended pick
$290 to $380	Hillhub 65K or APUS 80K
$430 to $600	CAMPLUX White or FOGATTI HybridShower 6
$730 to $740	Suburban SW12DE

Tank Heater vs Tankless

Tank

FOGATTI HybridShower 6, Suburban SW12DE and CAMPLUX White store hot water and use little 12 volt power.

Tankless

APUS 80K and Hillhub 65K heat on demand and draw 12 volts for the fan and controls.

Most boondockers should choose CAMPLUX White or Suburban SW12DE unless they want endless showers.

By Budget

Budget	Recommended pick
Lowest cost	CAMPLUX White
Mid cost	Hillhub 65K
Higher	APUS 80K
Large tank	Suburban SW12DE

For Solar and Battery Rigs Specifically

Look for

A tank with ignition-only 12 volt draw, as on Suburban SW12DE.

In this comparison

Suburban SW12DE and CAMPLUX White draw little 12 volt power. APUS 80K and Hillhub 65K draw more for their fans.

When to Spend More

Spend more if

Spend more on FOGATTI HybridShower 6 or APUS 80K if you want a powered anode or the highest burner.

Save if

Save with CAMPLUX White for a hybrid at a moderate price.

FAQ

Before You Bring One Home

Which heater is best for a small battery bank?

A tank heater like CAMPLUX White, since it needs less 12 volt power than a tankless. Only ignition draws from the battery.

What is the common boondocking mistake?

Counting on an electric element with no inverter. Rely on propane.

Is APUS worth more than Hillhub?

For long showers, yes. Hillhub 65K costs less and is CSA listed.

How do I save propane?

Lower the temperature and shorten showers. A well-insulated tank also helps.

Do I need a vent for these?

Yes. Follow the maker's venting rules and local codes.

Bottom line

The short version

Best Overall
FOGATTI HybridShower 6 Ultra RV Tank Water Heater
Check price for FOGATTI HybridShower 6 Ultra RV Tank Water Heater (opens in a new tab)
Best Large Tank
Suburban SW12DE 12-Gallon RV Water Heater
Check price for Suburban SW12DE 12-Gallon RV Water Heater (opens in a new tab)
Best Value Hybrid
CAMPLUX 6 Gallon RV Water Heater
Check price for CAMPLUX 6 Gallon RV Water Heater (opens in a new tab)
Best High-Output Tankless
APUS RV Tankless Water Heater
Check price for APUS RV Tankless Water Heater (opens in a new tab)
Best Mid-Priced Tankless
Hillhub RV Tankless Water Heater 65
Check price for Hillhub RV Tankless Water Heater 65 (opens in a new tab)

Browse more rv water heater for boondocking on Amazon →

About the author

Bowen Higgins

RV Editor at RV Gear Lab

Bowen covers RV power, water systems, towing and leveling, upkeep and interior comfort, with a focus on matching gear to the rig, the hookups and the way you actually travel.

5 Best RV Water Heater For Boondocking in 2026: A Practical RV Guide

Our top picks

The Rig Fit Check

What Matters Before You Choose an RV Water Heater For Boondocking

Battery draw

Tank versus tankless

Propane use

Electric element

Temperature rise vs flow

Install and venting

Why You Can Trust RV Gear Lab

The 5 best rv water heater for boondocking, explained

FOGATTI HybridShower 6 Ultra RV Tank Water Heater

Suburban SW12DE 12-Gallon RV Water Heater

CAMPLUX 6 Gallon RV Water Heater

APUS RV Tankless Water Heater

Hillhub RV Tankless Water Heater 65

How We Built This Shortlist

Power source

Tank or tankless

Burner output

Altitude

Battery load

Match an RV Water Heater For Boondocking to Your RV

By Dry Camp Style

By Budget

Tank Heater vs Tankless

By Budget

For Solar and Battery Rigs Specifically

When to Spend More

Before You Bring One Home

Which heater is best for a small battery bank?

What is the common boondocking mistake?

Is APUS worth more than Hillhub?

How do I save propane?

Do I need a vent for these?

The short version

Bowen Higgins

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