Buying Guide
6 Best Gas Electric RV Water Heater in 2026: A Practical RV Guide
Six gas and electric RV tank water heaters compared by gallon size, propane burner BTU, control method and cutout fit for owners who camp on and off hookups.
By Hardcastle's RV Editors
10 min read6 products evaluated
A gas and electric RV water heater lets you heat with propane when boondocking and with shore power when plugged in, and some can use both to recover faster. The tank size, burner rating and cutout fit decide the choice.
The six picks run from 6 to 12 gallons. Nothing here is claimed as gas or electric certified beyond what a listing says, and every gas appliance needs proper venting and install per the maker's manual.
Hardcastle’s RV field notes
The Rig Fit Check
A quick way to connect the shortlist to the space, workload and ownership details that matter after the box arrives.
- Start with the job
- Suburban SW12DE 12-Gallon RV Water Heater leads this shortlist for Large tank rigs. 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 12 gallon Suburban DSI, 10 gallon hybrid, 12,000 BTU, 6 gallon hybrid, 12,000 BTU. Confirm the exact model and included components before ordering.
- Trade-off to plan for
- Electric element is described as optional
The Practical Shortlist
A road-tested-thinking look at 6 options, organized around the job each one suits best.
Best Overall
Suburban SW12DE 12-Gallon RV Water Heater
Large tank rigs
Our take Check price for Suburban SW12DE 12-Gallon RV Water Heater (opens in a new tab)
Best 10 Gallon Hybrid
FOGATTI HybridShower 10 Ultra RV Tank Water Heater
10 gallon replacements
Our take Check price for FOGATTI HybridShower 10 Ultra RV Tank Water Heater (opens in a new tab)
Best 6 Gallon with Powered Anode
FOGATTI HybridShower 6 Ultra RV Tank Water Heater
Tank life
Our take Check price for FOGATTI HybridShower 6 Ultra RV Tank Water Heater (opens in a new tab)
Best Value 10 Gallon
KINGRVER 10 Gallon RV Tank Water Heater
Budget 10 gallon
Our take Check price for KINGRVER 10 Gallon RV Tank Water Heater (opens in a new tab)
Best Interior Control 6 Gallon
CAMPLUX 6 Gallon RV Water Heater
Interior mode switching
Our take Check price for CAMPLUX 6 Gallon RV Water Heater (opens in a new tab)
Best 6 Gallon with Remote
KINGRVER 6 Gallon RV Tank Water Heater
Remote control
Our take Check price for KINGRVER 6 Gallon RV Tank Water Heater (opens in a new tab)
Why Each Pick Made the Cut
Best Overall1 of 6
Suburban SW12DE 12-Gallon RV Water Heater on Amazon (opens in a new tab)
Choose Suburban SW12DE 12-Gallon RV Water Heater for largest tank here at 12 gallons.
Best for
- Large tank rigs
Why it made the shortlist
Suburban SW12DE is a 12 gallon RV water heater with direct spark ignition and an electric element, built with a porcelain-lined steel tank and a replaceable anode rod. The listing says the optional electric element lets you use campsite or generator power.
Against FOGATTI HybridShower 10 Ultra, it is a 12 gallon Suburban tank. Against KINGRVER 10, it has a replaceable anode rod and a known RV brand.
It is the best match for owners who want a large Suburban tank with gas and electric. Think of it as the pick for large tank rigs.
Key dimensions & specs
- 12 gallon Suburban DSI
- Electric element
- Porcelain-lined tank, anode rod
Pros
- Largest tank here at 12 gallons
- Replaceable anode rod
- Porcelain-lined steel tank
- Direct spark ignition
Cons
- Electric element is described as optional
Best 10 Gallon Hybrid2 of 6
FOGATTI HybridShower 10 Ultra RV Tank Water Heater on Amazon (opens in a new tab)
FOGATTI HybridShower 10 Ultra RV Tank Water Heater makes the shortlist because 12,000 BTU propane burner.
Best for
- 10 gallon replacements
Why it made the shortlist
FOGATTI HybridShower 10 Ultra is a 10 gallon gas and electric hybrid with a 12,000 BTU propane burner and three power choices of propane, electric or hybrid. The listing says it replaces many Suburban and Dometic 10 gallon heaters and has dry-fire, over-temperature and over-pressure protection.
It suits owners replacing a 10 gallon tank who want a hybrid mode. Buyers focused on 10 gallon replacements will find it a sensible match.
Key dimensions & specs
- 10 gallon hybrid, 12,000 BTU
- Propane, electric or hybrid
- Fits many 10 gallon cutouts
Pros
- 12,000 BTU propane burner
- Hybrid mode for faster recovery
- Dry-fire and over-pressure protection
- Fits many Suburban and Dometic 10 gallon cutouts
Cons
- Check venting and cutout fit
Best 6 Gallon with Powered Anode3 of 6
FOGATTI HybridShower 6 Ultra RV Tank Water Heater on Amazon (opens in a new tab)
The strongest case for FOGATTI HybridShower 6 Ultra RV Tank Water Heater is powered anode rod for corrosion defense.
Best for
- Tank life
Why it made the shortlist
FOGATTI HybridShower 6 Ultra is a 6 gallon gas and electric hybrid, a drop-in for Suburban and Dometic cutouts with a 12,000 BTU burner. The listing says it includes a powered anode rod for corrosion defense and temperature control that prevents scalding.
Against CAMPLUX Black, it adds a powered anode rod. Against KINGRVER 6, it lists a 12,000 BTU burner and anode defense.
It suits owners who want long tank life in a 6 gallon cutout. It earns its slot for tank life.
Key dimensions & specs
- 6 gallon hybrid, 12,000 BTU
- Powered anode rod
- Drop-in for Suburban and Dometic
Pros
- Powered anode rod for corrosion defense
- 12,000 BTU propane burner
- Gas and electric modes
- Temperature control against scalding
Cons
- Check venting and cutout fit
Best Value 10 Gallon4 of 6
KINGRVER 10 Gallon RV Tank Water Heater on Amazon (opens in a new tab)
KINGRVER 10 Gallon RV Tank Water Heater is the better fit when budget 10 gallon.
Best for
- Budget 10 gallon
Why it made the shortlist
KINGRVER 10 Gallon is a propane and electric hybrid with a 12,000 BTU burner for many 10 gallon RV openings. The listing says you can adjust temperature and switch modes from inside the RV and describes a porcelain-lined tank.
Against FOGATTI HybridShower 10, it costs much less. Against Suburban SW12DE, it adds interior control.
It suits owners who want a 10 gallon hybrid at a lower price. It is a natural fit for budget 10 gallon.
Key dimensions & specs
- 10 gallon hybrid, 12,000 BTU
- Interior temperature control
- Porcelain-lined tank
Pros
- 12,000 BTU burner stated
- Control from inside the RV
- Propane, electric or combined use
Cons
- Check venting and cutout fit
Best Interior Control 6 Gallon5 of 6
CAMPLUX 6 Gallon RV Water Heater on Amazon (opens in a new tab)
Choose CAMPLUX 6 Gallon RV Water Heater for interior panel for modes and temperature.
Best for
- Interior mode switching
Why it made the shortlist
CAMPLUX 6 Gallon Black is a propane and electric hybrid and a direct replacement for most Suburban and Dometic 4 to 6 gallon models. The listing says three heating modes and one-click temperature are set from an interior panel.
Against KINGRVER 6, it has an interior panel instead of a remote. Against FOGATTI HybridShower 6, it is cheaper.
It suits owners who want interior mode switching. Think of it as the pick for interior mode switching.
Key dimensions & specs
- 6 gallon hybrid, black
- Three modes
- Interior control panel
Pros
- Interior panel for modes and temperature
- Porcelain-lined tank with anode
- Drop-in for 4 to 6 gallon units
- Black finish
Cons
- Check venting and cutout fit
- Smaller tank
Best 6 Gallon with Remote6 of 6
KINGRVER 6 Gallon RV Tank Water Heater on Amazon (opens in a new tab)
KINGRVER 6 Gallon RV Tank Water Heater makes the shortlist because remote controller included.
Best for
- Remote control
Why it made the shortlist
KINGRVER 6 Gallon is a gas, electric or hybrid heater with a remote controller for 104 to 140 degrees F. The listing says gas mode uses 12 volt DC ignition powered by the RV system.
Against CAMPLUX Black, it uses a remote. Against FOGATTI HybridShower 6, it is lower in price.
It suits owners who want a remote at a modest price. Buyers focused on remote control will find it a sensible match.
Key dimensions & specs
- 6 gallon hybrid
- Remote 104 to 140°F
- 12V DC gas ignition
Pros
- Remote controller included
- Three heating modes
- Fits common 4 to 6 gallon setups
Cons
- Needs 3 inches of added clearance
- Check venting and cutout fit
How We Built This Shortlist
Each pick was assessed across 5 criteria weighted for real-world use.
- Tank size
- We compared 6, 10 and 12 gallon capacities.
- Burner output
- Stated propane BTU ratings were compared.
- Power modes
- Propane, electric and hybrid modes were compared.
- Controls
- Interior panels, remotes and relays were compared.
- Certifications
- We only repeated certifications that a listing names.
What Matters Before You Choose a Gas Electric RV Water Heater
Key buying criteria so you get the right fit the first time.
Tank size
A 6 gallon tank suits one or two people, and 10 to 12 gallons suits families. Size to showers and dishes per day. Check the gallon size.
Burner BTU
A 12,000 BTU burner recovers faster than a 10,000 BTU one per the listings. Faster recovery needs more propane draw. Check the BTU rating.
Hybrid mode
Hybrid mode uses propane and electric together for faster recovery on hookups. It costs amps and propane. Check the mode list.
Cutout fit
Drop-ins fit 6, 10 or 12 gallon openings and need correct clearance. KINGRVER lists added clearance. Measure before buying.
Anode rod
An anode rod slows tank corrosion, and a powered rod is a different design. Suburban lists a replaceable rod and FOGATTI a powered one. Check the rod type.
Venting and codes
Gas heaters need venting, gas lines and clearances per the manual. Follow it and local codes. Check what certifications a listing names.
Match a Gas Electric RV Water Heater to Your RV
By Tank Size
| Your situation | Recommended pick | Why |
|---|---|---|
| 12 gallon family tank | Suburban SW12DE | 12 gallon Suburban. |
| 10 gallon hybrid, premium | FOGATTI HybridShower 10 | 12,000 BTU hybrid. |
| 10 gallon, low cost | KINGRVER 10 | Interior control. |
| 6 gallon, long tank life | FOGATTI HybridShower 6 | Powered anode rod. |
| 6 gallon, interior panel | CAMPLUX Black | Interior panel. |
Scroll sideways to see every column.
By Budget
| Budget | Recommended pick |
|---|---|
| $390 to $400 | CAMPLUX Black or KINGRVER 6 |
| $500 to $560 | KINGRVER 10 or FOGATTI HybridShower 6 |
| $730 to $750 | Suburban SW12DE or FOGATTI HybridShower 10 |
Suburban Tank vs Hybrid Replacement
- Suburban tank
- Suburban SW12DE is a known RV brand with a replaceable anode rod.
- Hybrid replacement
- FOGATTI HybridShower 10, FOGATTI HybridShower 6, KINGRVER 10, CAMPLUX Black and KINGRVER 6 add propane, electric or hybrid modes.
Most owners should choose KINGRVER 10 or CAMPLUX Black unless they want the Suburban name.
By Control Style
| Control | Recommended pick |
|---|---|
| Remote | KINGRVER 6 |
| Interior panel | CAMPLUX Black |
| Interior control, 10 gallon | KINGRVER 10 |
| Standard Suburban | Suburban SW12DE |
For Boondocking and Hookups Specifically
- Look for
- Propane for dry camping and electric on hookups, as on FOGATTI HybridShower 10.
- In this comparison
- FOGATTI HybridShower 10 lists propane, electric and hybrid modes. Check amp load on hookups.
When to Spend More
- Spend more if
- Spend more on FOGATTI HybridShower 10 or Suburban SW12DE for large tanks or known brands.
- Save if
- Save with KINGRVER 6 or KINGRVER 10 for hybrid use.
Before You Bring One Home
Can I use both gas and electric at once?
Hybrid models like FOGATTI HybridShower 10 offer a hybrid mode. It recovers faster but draws more.
What is the common mistake?
Ordering the wrong size. Measure your cutout.
Is Suburban worth more than KINGRVER?
For brand and a known anode rod, yes. KINGRVER 10 adds interior control for less.
How do I switch modes?
Use the interior panel or remote where listed, or the switch on the heater. Check the manual for the right order.
How often should I flush the tank?
Flush it each season, and check the anode rod. Follow the manual.
Bottom Line
Best overall: Suburban SW12DE 12-Gallon RV Water Heater — best overall pick in this roundup. See the full verdicts above for every pick, with pros, cons and who each one suits.
Browse all gas electric rv water heater on Amazon — Prime-eligible options with current pricing.