Best Tankless Water Heaters for RV: 15 Spec-Based Picks
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Finding the best tankless water heaters for RV requires checking specific specs like flow rate, fuel type, and dimensions. We compared 15 models using only the data published on their listings. The Suburban 6-Gallon Gas and Electric RV Water Heater leads because it offers dual-source heating with a 4.0-gallon capacity. This allows you to switch between campsite electricity and LP gas for steady hot water. The list covers options for high-altitude travel, under-sink use, and outdoor camping. Read on to decide which unit fits your rig's layout and power needs.
Quick picks
The best fit for you
- You want dual gas and electric heating in one unit Suburban 6-Gallon Gas and Electric RV Water Heater It uses either campsite electricity or LP gas for steady hot water.
- You need high flow and stable temperatures for showers Ranein 65,000 BTU RV Tankless Water Heater Its 65,000 BTU output provides reliable high-flow hot water for RV families.
- You camp at high altitudes with propane hookups APUS 68,000 BTU RV Propane Water Heater It delivers high flow and reliable high-altitude operation for RVs with propane.
- You need an exterior water outlet for washing VEVOR 42,000 BTU Propane RV Tankless Water Heater Its front-facing outlet provides practical exterior access for propane hot water.
- You need off-grid washing without vehicle electrical connections Camplux 5L Portable Propane Water Heater It uses battery ignition and minimal water pressure for basic outdoor hot water.
Our 15 picks
Suburban 6-Gallon Gas and Electric RV Water Heater
Best for: campers wanting dual gas and electric heating
- Use
- RV (what this guide is about)
- Fuel Type
- Electric
- Capacity
- 4.0 Gallons
- Dimensions
- 12.7 × 12.7 × 12.7 inches
- Weight
- 32.9 pounds
View on Amazon: Suburban 6-Gallon Gas and Electric RV Water Heater
This 6-gallon RV water heater pairs a 12,000 BTU gas burner with a 1,440-watt electric element. You can heat water using campground hookups or LP gas. It delivers a 10.1 gallon-per-hour gas recovery rate and 6.1 gallons per hour on electric. Its porcelain-lined steel tank includes a replaceable anode rod. It suits RV owners wanting dual-power flexibility.
Pros
- Dual-fuel heating with 12,000 BTU gas and 1,440-watt electric element
- Gas recovery rate of 10.1 gallons per hour
- Replaceable anode rod doubles as tank drain
- Porcelain-lined steel tank backed by a 3-year tank warranty
Cons
- Storage tank design limits continuous hot water flow
- Unit weighs 32.9 pounds before filling with water
Good fit if
- You want the option to run on campsite electricity or LP gas.
- You need a heater matching a 12.75 by 12.75-inch cutout.
- You prefer a serviceable steel tank with an anode rod.
Skip if
- You want continuous endless hot water on demand.
- You require an ultra-lightweight tankless installation.
Verdict: Suburban 6-Gallon Gas and Electric RV Water Heater delivers dependable dual-source heating with fast recovery rates for standard RV cutouts. It provides steady hot water using either campsite electricity or LP gas.
Ranein 65,000 BTU RV Tankless Water Heater
Best for: RV families needing high flow and stability
- Use
- RV (what this guide is about)
- Flow Rate
- 3.9 GPM
- BTU
- 65,000 BTU
- Voltage
- 12 V DC
- Certification
- CSA
- Dimensions
- 15 x 15 x 15 in
This Ranein unit delivers 65,000 BTU and 3.9 GPM for strong, stable hot water in RVs. It runs on 12V DC power and fits standard 15x15 inch cutouts. The oxygen-free copper heat exchanger ensures durability. You get precise temperature control and a multi-function remote. It suits families needing simultaneous use or cold-weather camping with freeze protection.
Pros
- 65,000 BTU burner for fast heating
- 3.9 GPM flow rate for strong pressure
- 12V DC power for RV integration
- Multi-function remote with real-time data
- CSA certified with safety shut-offs
Cons
- Exterior door not included
- Heavier at 15.5 pounds
- Requires 15x15 inch cutout
Good fit if
- You need high flow for multiple users
- You want precise temperature control
- You camp in cold climates
Skip if
- You prefer a compact portable unit
- You already have a matching door
- You need a larger cutout fit
Verdict: Ranein RV 65K BTU 3.9 GPM Heater provides reliable, high-flow hot water for RV families. It is the best choice for travelers who prioritize strong pressure and stable temperatures during extended showers.
APUS 68,000 BTU RV Propane Water Heater
Best for: High-altitude RV camping with propane hookups
- Use
- RV (what this guide is about)
- Fuel Type
- Propane
- Flow Rate
- 3.9 GPM
- BTU
- 68,000 BTU
- Voltage
- 12V DC
- Certification
- CSA
This propane tankless water heater supplies on-demand hot water for your RV using a 68,000 BTU burner and a 12V DC electrical connection. It delivers up to 3.9 GPM flow, activates at 0.55 GPM, and operates at elevations up to 9,800 feet. It suits you if you need continuous hot water in a standard 12.6 by 12.6-inch cutout without relying on a storage tank.
Pros
- Delivers up to 3.9 GPM with a 68,000 BTU burner
- Operates at elevations up to 9,800 feet
- Built-in freeze protection triggers at 35.6°F
- Includes interior remote control
Cons
- Requires a minimum 0.55 GPM water flow to activate
- Maximum output temperature caps at 124°F
Good fit if
- You camp at high elevations up to 9,800 feet.
- You have an existing 12.6 by 12.6-inch cutout with 12V DC power.
- You want on-demand propane heating up to 3.9 GPM.
Skip if
- You run low-flow fixtures below the 0.55 GPM activation threshold.
- You require water temperatures higher than 124°F.
Verdict: APUS 68,000 BTU Propane RV Tankless Water Heater delivers high flow and reliable high-altitude operation for RVs with standard cutouts. Its 3.9 GPM capacity and automatic freeze protection make it a capable propane replacement for traditional tanks.
VEVOR 42,000 BTU Propane RV Tankless Water Heater
Best for: campers needing an exterior water outlet
- Use
- RV (what this guide is about)
- Fuel Type
- Propane
- BTU
- 42,000 BTU
- Installation Location
- Outdoor
- Dimensions
- 15 x 15 inches
- Weight
- 26.9 pounds
View on Amazon: VEVOR 42,000 BTU Propane RV Tankless Water Heater
This propane unit delivers 42,000 BTU of on-demand heat designed specifically for RVs. It features a standard 15 by 15-inch outer door, 1/2-inch NPT plumbing connections, and a dedicated front outdoor water outlet for exterior rinsing. A remote controller and digital touch screen manage target temperatures. If you need steady hot water inside your camper plus convenient access for washing gear or pets outside, this system fits your setup.
Pros
- Front-facing outdoor water outlet for exterior rinsing
- Segmented combustion adjusts heating output for summer and winter demands
- Standard 15 x 15-inch door fits common camper openings
- Includes remote controller and digital LED touch screen
Cons
- 42,000 BTU rating provides lower heating power than larger 55,000+ BTU models
- Requires propane fuel supply and dedicated cutouts for the 2.36-inch exhaust
Good fit if
- You want an exterior water port directly on the heater door for outdoor rinsing.
- Your camper uses standard 15 x 15-inch cutout dimensions and 1/2-inch NPT plumbing.
- You prefer managing temperatures with a digital remote controller.
Skip if
- You need higher heating output than 42,000 BTU for extreme winter temperatures.
- You want an all-electric water heater rather than propane gas.
Verdict: VEVOR 42,000 BTU RV Tankless Water Heater provides reliable propane hot water with practical exterior access via its front-facing outlet. Its standard 15 by 15-inch profile makes it a straightforward replacement for compatible RV compartments.
Camplux 5L Portable Propane Water Heater
Best for: outdoor off-grid washing and camping showers
- Use
- Camping, RV (what this guide is about)
- Fuel Type
- Propane
- Flow Rate
- 1.32 GPM
- Installation Location
- Outdoor
- Certification
- CSA
- Dimensions
- 4.33 x 11.4 x 14.8 inches
This portable propane unit weighs 10 pounds and delivers a flow rate of 1.32 GPM for outdoor RV and off-grid use. It operates without an electrical hookup, igniting on two D batteries and working with water pressure as low as 3.0 PSI. If you need a compact, outdoor-only heating setup for quick rinses, dishes, or simple camping tasks, this lightweight model fits basic off-grid setups without tapping into your RV electrical system.
Pros
- Low 3.0 PSI minimum water pressure startup
- Weighs 10 pounds with folding handle for transport
- Ignites using 2 D batteries without electrical wiring
- CSA certified with built-in overheat protection
Cons
- Rated for outdoor installation only
- Modest 1.32 GPM maximum flow rate
- Requires regular replacement of D batteries
Good fit if
- You need a lightweight outdoor water heater that weighs only 10 pounds.
- You operate off-grid with low water pressure down to 3.0 PSI.
- You want an independent propane setup without connecting to RV electrical wiring.
Skip if
- You require an indoor-mounted water heater inside your RV.
- You need a flow rate higher than 1.32 GPM for higher water demand.
Verdict: Camplux 5L Portable Propane Water Heater delivers basic outdoor hot water at 1.32 GPM using battery ignition and minimal water pressure. It is a practical, portable option when you need off-grid washing without an RV electrical connection.
Orbek 60,000 BTU 12V RV Tankless Water Heater
Best for: high-altitude RV travel and mountain camping
- Use
- RV (what this guide is about)
- Fuel Type
- Propane
- BTU
- 60,000 BTU/hr
- Voltage
- 12 V DC
- Temperature Control
- 95°F to 123°F
- Certification
- CSA
View on Amazon: Orbek 60,000 BTU 12V RV Tankless Water Heater
This Orbek unit is a propane-fired RV tankless water heater running on a 12V DC power system. It produces up to 60,000 BTU/hr and features high-altitude adjustment engineered for elevations up to 9,800 feet. The compact 12.7-inch cube body fits tight spaces, while a digital remote lets you set temperatures between 95°F and 123°F. It suits campers who need reliable hot water while traveling across varying mountain elevations.
Pros
- 60,000 BTU propane burner with staged combustion
- High-altitude mode rated for elevations up to 9,800 feet
- Smart remote adjusts water temperature from 95°F to 123°F
- Integrated 150 PSI pressure-reducing valve and frost protection
Cons
- Exterior door panels must be purchased separately
- Maximum heating setpoint is limited to 123°F
Good fit if
- You regularly camp at elevations up to 9,800 feet.
- You want a compact 12.7-inch cube unit powered by 12V DC and propane.
- You prefer adjusting water temperature from inside using a digital remote.
Skip if
- You need output temperatures higher than 123°F.
- You want a kit that includes the outer access door panel in the box.
Verdict: Orbek 60,000 BTU 12V RV Tankless Water Heater provides reliable on-demand propane performance engineered for high elevations up to 9,800 feet. Its compact square footprint and included remote control make it a practical heating solution for mobile living.
Camplux 1.58 GPM Portable Propane Water Heater
Best for: off-grid outdoor RV showers and washing
- Use
- Camping, RV (what this guide is about)
- Fuel Type
- Propane
- Flow Rate
- 1.58 GPM
- BTU
- 41,000 BTU/hr
- Installation Location
- Outdoor
- Certification
- CSA
View on Amazon: Camplux 1.58 GPM Portable Propane Water Heater
This Camplux outdoor propane water heater delivers 1.58 GPM of hot water at 41,000 BTU/hr. It weighs 13 pounds and runs on two D-cell batteries, requiring no electrical hookup. The unit activates at 3.0 PSI, making it compatible with low-pressure pumps or gravity setups. It suits you if you need a lightweight, portable hot water supply outside your RV without tying into vehicle electrical wiring.
Pros
- Delivers 1.58 GPM flow rate with a 41,000 BTU/hr burner
- Operates on two D-cell batteries without electrical hookups
- Ignites at a low water pressure threshold of 3.0 PSI
- Weighs 13 pounds with an integrated folding handle
Cons
- Rated for outdoor installation only rather than indoor RV mounting
- Relies on replaceable D batteries rather than direct 12V RV wiring
Good fit if
- You want an exterior portable shower setup that runs without 12V or 120V RV wiring.
- You use a low-pressure water supply operating down to 3.0 PSI.
- You need a compact 13-pound heater that connects to a standard garden hose and 20 lb propane tank.
Skip if
- You need a permanently plumbed indoor tankless water heater for your RV.
- You want a heater hardwired into your RV 12V electrical system.
Verdict: Camplux 1.58 GPM Portable Propane Water Heater delivers off-grid exterior hot water using battery ignition and low water pressure support. It provides an independent outdoor washing setup for your RV without tapping vehicle electrical systems.
Poukaran 65,000 BTU RV Propane Water Heater
Best for: RVs needing dual indoor and outdoor outlets
- Use
- RV (what this guide is about)
- Fuel Type
- Propane
- BTU
- 65,000 BTU
- Voltage
- 12V DC
- Temperature Control
- 95°F to 123°F
- Certification
- CSA
This propane-powered RV tankless water heater delivers up to 65,000 BTU of heating output and runs on a standard 12V DC electrical system. It features dual water outlets for indoor plumbing and outdoor utility use, along with a 95°F to 123°F temperature range managed by a digital control panel. It suits you if you need a CSA-certified replacement heater that fits a 13 by 13-inch opening with a 15-inch door.
Pros
- 65,000 BTU propane burner with oxygen-free copper heat exchanger
- Dual water outlets for internal RV plumbing and exterior use
- Fits compact 13 x 13-inch rough openings with a 15 x 15-inch door
- Built-in freeze protection and automatic gas shut-off
Cons
- Maximum output temperature caps at 123°F
- Rated water flow rate in gallons per minute is not specified in specs
- Requires an active 12V DC electrical connection to operate
Good fit if
- You need dedicated interior plumbing alongside a direct exterior water outlet.
- You have a 13 x 13-inch cutout and a 12V DC power connection.
- You want a propane unit rated for high-altitude use with freeze protection.
Skip if
- You require water temperatures higher than 123°F.
- You need an electric-only water heater without propane hookups.
Verdict: Poukaran 65,000 BTU RV Tankless Water Heater delivers capable heating performance and unique dual-outlet flexibility for camper installations. Its compact 13 by 13-inch mounting profile and CSA certification make it a practical choice across the 15 models in this guide.
HUDEX 60,000 BTU RV Propane Heater
Best for: Replacing standard 6-12 gallon tank heaters
- Use
- RV (what this guide is about)
- Fuel Type
- Propane
- Flow Rate
- 3.7 GPM
- BTU
- 60,000 BTU
- Temperature Control
- 95–124°F
- Certification
- CSA
This HUDEX unit delivers 60,000 BTU of propane power at 3.7 GPM for RV showers. It fits standard 15x15-inch compartments, replacing many 6- to 12-gallon tank models. The system operates reliably up to 10,827 feet and includes intelligent freeze protection. You get steady temperature control between 95–124°F and CSA safety certifications. It suits RVers needing a direct replacement for older tank-style heaters.
Pros
- High 60,000 BTU output with 3.7 GPM flow rate
- Fits standard 15x15-inch RV water heater compartments
- CSA-certified with flame-failure and gas-leak protection
- Intelligent freeze protection activates at 35.6°F
- Stable temperature control between 95–124°F
Cons
- Lower flow rate than the 3.9 GPM models on this list
- Heavier and bulkier than portable camping units
- Requires 12V DC power connection for operation
Good fit if
- You need a direct replacement for a 6- to 12-gallon tank heater
- You camp at high elevations up to 10,827 feet
- You want CSA-certified safety features for propane use
Skip if
- You prefer a portable unit for outdoor camping trips
- You need a flow rate higher than 3.7 GPM
- You lack access to a 12V DC power source
Verdict: HUDEX 60K BTU RV Tankless Water Heater fits RVers replacing standard tank heaters who need reliable high-altitude performance and CSA safety. It is a solid choice for those prioritizing fixed installation over portability.
FOGATTI InstaShower 8 Plus RV Tankless Water Heater
Best for: High-altitude RV travel and tank replacements
- Use
- RV (what this guide is about)
- Fuel Type
- Propane
- Flow Rate
- 2.9 GPM
- BTU
- 55,000 BTU
- Voltage
- 12V DC
- Certification
- CSA
View on Amazon: FOGATTI InstaShower 8 Plus RV Tankless Water Heater
The FOGATTI InstaShower 8 Plus is a propane-powered tankless water heater designed for RVs. It delivers 2.9 GPM at 55,000 BTU using 12V DC power. This unit replaces standard 6-gallon tank heaters with its 15x15 inch footprint. It includes a built-in pressure relief valve, a 15x15 inch door, and a 2-meter remote controller. CSA certification ensures safety for your travels.
Pros
- High-altitude ready up to 9,800 feet
- Includes 15x15 inch door and 2-meter remote
- Built-in pressure relief valve saves installation time
- CSA certified for safety and reliability
Cons
- Lower flow rate of 2.9 GPM compared to competitors
- No built-in mixing valve for temperature control
- Single outlet configuration limits simultaneous use
Good fit if
- You need a direct replacement for a 6-gallon tank heater
- You travel to high-altitude destinations frequently
- You want a unit with a long-range remote controller
Skip if
- You require a flow rate above 3.0 GPM
- You need a built-in mixing valve for precise temperature control
- You prefer a white door finish over black
Verdict: FOGATTI InstaShower 8 Plus RV Tankless Heater fits RVers who prioritize altitude performance and included accessories over maximum flow rate. It is a solid upgrade for those replacing older 6-gallon tank units.
FOGATTI InstaShower 7 RV Propane Tankless Water Heater
Best for: High-altitude and cold-weather RV camping
- Use
- RV (what this guide is about)
- Fuel Type
- Propane
- Flow Rate
- 2.5 GPM
- BTU
- 48,000 BTU
- Temperature Control
- 95°F to 123°F
- Certification
- CSA
View on Amazon: FOGATTI InstaShower 7 RV Propane Tankless Water Heater
This propane tankless water heater delivers 2.5 GPM with a 48,000 BTU heat output. Measuring 15 x 15 x 15 inches, it features a pre-installed 150 PSI relief valve, forced exhaust, and high-altitude operation up to 9,800 feet. A 6.6-foot wired remote lets you regulate water temperatures between 95°F and 123°F. It suits you if you want consistent hot water during high-elevation RV trips and cold-weather camping down to -22°F.
Pros
- Delivers 2.5 GPM flow rate with 48,000 BTU heat output
- High-altitude mode maintains operation up to 9,800 feet
- Pre-installed 150 PSI pressure relief valve saves setup steps
- Built-in forced exhaust and -22°F antifreeze protection
- Wired 6.6-foot remote controls temperature from 95°F to 123°F
Cons
- Installation door is not included and must be purchased separately
- Maximum water temperature is capped at 123°F
- Remote control placement is restricted by the 6.6-foot wire length
Good fit if
- You camp in mountainous areas up to 9,800 feet in elevation.
- You need 2.5 GPM continuous hot water for your RV shower and sink.
- You travel in sub-freezing temperatures down to -22°F.
Skip if
- You want an installation package that includes the outer door.
- You require water temperatures higher than 123°F.
- You prefer an electric-powered water heater over propane.
Verdict: FOGATTI InstaShower 7 Propane RV Tankless Heater provides 2.5 GPM on-demand flow with verified operation up to 9,800 feet. Its pre-installed relief valve and -22°F freeze protection make it a dependable propane unit for cold and high-altitude RV travel.
Ranein 4-Gallon Electric Mini Tank
Best for: RV under-sink point-of-use electric heating
- Use
- RV, Under Sink (what this guide is about)
- Fuel Type
- Electric
- Wattage
- 1440W
- Capacity
- 4 gallons
- Voltage
- 120V
- Temperature Control
- 68–149°F
This 4-gallon electric mini-tank heater delivers hot water using a 120V, 1440W heating element. Built with a 304 stainless steel tank and 1/2-inch NPT connections, it provides an adjustable temperature span from 68°F to 149°F. Measuring 15 by 15 by 15 inches, it fits under sinks or mounts to floors, serving you well when you prefer 120V electrical hookups over propane.
Pros
- Corrosion-resistant 304 stainless steel tank with magnesium anode rod
- Standard 120V plug-in operation draws 1440W
- Adjustable thermostat spans 68°F to 149°F
- Built-in safety protections include IPX4 water resistance and 150 PSI rating
- Standard 1/2-inch NPT water connections for straightforward plumbing
Cons
- 4-gallon storage limit restricts continuous hot water flow
- Cube dimensions of 15 x 15 x 15 inches require ample cabinet clearance
- Requires a 120V AC outlet rather than running on 12V DC battery power
Good fit if
- You have access to a standard 120V electrical outlet in your RV setup.
- You want a point-of-use buffer tank under a sink instead of a propane system.
- You need up to 4 gallons of hot water for washing dishes and hands.
Skip if
- You require continuous, endless hot water for long showers.
- You rely strictly on 12V DC battery power or LP gas while boondocking.
- You have less than 15 inches of vertical and horizontal installation clearance.
Verdict: Ranein 4-Gallon Mini-Tank Electric Water Heater delivers reliable point-of-use electric heating for RV sinks with 120V power access. Its 304 stainless steel tank and compact cube design provide durable performance without requiring gas hookups.
FOGATTI InstaShower 9 RV Tankless Water Heater
Best for: High-altitude RV camping with multiple fixtures
- Use
- RV (what this guide is about)
- Flow Rate
- 3.6 GPM
- BTU
- 66,000 BTU
- Temperature Control
- ±1°F
- Certification
- CSA
- Dimensions
- 15"H x 15"L x 14.4"W
View on Amazon: FOGATTI InstaShower 9 RV Tankless Water Heater
The FOGATTI InstaShower 9 is a dedicated propane RV water heater delivering up to 3.6 GPM with a 66,000 BTU output. It features a built-in mixing tank and staged burner rows that maintain water temperatures within ±1°F. If you camp at high elevations up to 9,800 feet or need enough flow for simultaneous kitchen and bathroom use, this unit gives you consistent output inside standard RV cutouts.
Pros
- High flow rate up to 3.6 GPM backed by 66,000 BTU output
- Built-in mixing tank stabilizes water temperature within ±1°F
- Operates at altitudes up to 9,800 feet and high wind speeds
- Includes 150 PSI pressure relief valve, filter screen, and remote
Cons
- Included remote controller operates only up to 6.6 feet
- Requires an optional 18-inch door to replace 10-gallon tank openings
- Total unit weight reaches 30.9 pounds
Good fit if
- You camp at high altitudes up to 9,800 feet.
- You want to run bathroom and kitchen hot water lines simultaneously.
- You want temperature stability with a built-in mixing tank.
Skip if
- You need a controller reach greater than 6.6 feet.
- You have a 10-gallon opening and do not want to purchase an 18-inch retrofit door.
Verdict: FOGATTI InstaShower 9 RV Tankless Water Heater delivers high-output heating and elevation tolerance for RVers who need multifixture performance on demand.
Camplux 6L Portable Propane Water Heater
Best for: Solo showers in portable RV setups
- Use
- Camping, RV, Cabins (what this guide is about)
- Fuel Type
- Propane
- Flow Rate
- 1.58 GPM
- BTU
- 41,000 BTU/hr
- Installation Location
- Outdoor
- Temperature Control
- 50°F to 122°F
This portable propane heater delivers 1.58 GPM at 41,000 BTU. Weighing 14 lbs with a compact 17.3-inch height, it fits RVs and cabins. You adjust temperature from 50°F to 122°F using flow knobs. It requires 2D batteries and a water pump for tank use. The unit includes a shower kit and gas regulator for quick setup.
Pros
- Lightweight 14 lb design with carrying handle
- Adjustable temperature range from 50°F to 122°F
- Includes 5 ft shower kit and gas regulator
- Compact 11.8 x 5.1 x 17.3 inch footprint
Cons
- Lower 1.58 GPM flow rate limits simultaneous use
- Requires 2D batteries for ignition operation
- Designed for outdoor installation only
Good fit if
- You need a lightweight unit for travel
- You want simple manual temperature control
- You use the heater for a single shower
Skip if
- You need high flow for multiple fixtures
- You require indoor installation safety
- You want battery-free electronic ignition
Verdict: Camplux BD158 Portable 1.58 GPM Heater suits travelers who prioritize portability over high flow. You get easy setup and reliable heat for solo use in cabins or RVs.
CAMMOO 65000 BTU RV Tankless Water Heater
Best for: high altitude and cold weather RV travel
- Use
- RV (what this guide is about)
- Fuel Type
- Propane
- BTU
- 65,000 BTU
- Voltage
- 12V DC
- Temperature Control
- ±3°F
- Certification
- CSA certified
This propane RV tankless water heater delivers 65,000 BTU of heating power at 12V DC. It maintains temperature within ±3°F and operates up to 9,800 ft. The unit includes a safety door and wired controller. It suits RV travelers needing reliable hot water in varied climates without complex wiring.
Pros
- 65,000 BTU heating capacity
- 12V DC electrical operation
- Temperature fluctuation within ±3°F
- CSA certified safety
- Includes safety door
Cons
- Wired controller only
- 28.5 pounds weight
- No remote control
Good fit if
- You need 12V DC power
- You want CSA certification
- You travel to high altitudes
Skip if
- You prefer remote operation
- You need higher GPM
- You want electric heating
Verdict: CAMMOO 65,000 BTU RV Water Heater fits RV owners who need reliable 12V DC heating with precise temperature control. It is a solid choice for high-altitude travel and cold weather camping.
Specifications side by side
| Spec | Suburban 6-Gallon Gas and Electric RV Water Heater | Ranein 65,000 BTU RV Tankless Water Heater | APUS 68,000 BTU RV Propane Water Heater | VEVOR 42,000 BTU Propane RV Tankless Water Heater | Camplux 5L Portable Propane Water Heater | Orbek 60,000 BTU 12V RV Tankless Water Heater | Camplux 1.58 GPM Portable Propane Water Heater | Poukaran 65,000 BTU RV Propane Water Heater | HUDEX 60,000 BTU RV Propane Heater | FOGATTI InstaShower 8 Plus RV Tankless Water Heater | FOGATTI InstaShower 7 RV Propane Tankless Water Heater | Ranein 4-Gallon Electric Mini Tank | FOGATTI InstaShower 9 RV Tankless Water Heater | Camplux 6L Portable Propane Water Heater | CAMMOO 65000 BTU RV Tankless Water Heater |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fuel Type | not specified | not specified | Propane | Propane | Propane | Propane | Propane | Propane | Propane | Propane | Propane | Electric | not specified | Propane | Propane |
| Flow Rate | not specified | 3.9 GPM | 3.9 GPM | not specified | 1.32 GPM | not specified | 1.58 GPM | not specified | 3.7 GPM | 2.9 GPM | 2.5 GPM | not specified | 3.6 GPM | 1.58 GPM | not specified |
| BTU | not specified | 65,000 BTU | 68,000 BTU | 42,000 BTU | not specified | 60,000 BTU/hr | 41,000 BTU/hr | 65,000 BTU | 60,000 BTU | 55,000 BTU | 48,000 BTU | not specified | 66,000 BTU | 41,000 BTU/hr | 65,000 BTU |
| Wattage | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 1440W | not specified | not specified | not specified |
| Installation Location | not specified | not specified | not specified | Outdoor | Outdoor | not specified | Outdoor | not specified | not specified | not specified | not specified | not specified | not specified | Outdoor | not specified |
| Capacity | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 4 gallons | not specified | not specified | not specified |
| Voltage | not specified | 12 V DC | 12V DC | not specified | not specified | 12 V DC | not specified | 12V DC | not specified | 12V DC | not specified | 120V | not specified | not specified | 12V DC |
| Temperature Control | not specified | not specified | not specified | not specified | not specified | 95°F to 123°F | not specified | 95°F to 123°F | 95–124°F | not specified | 95°F to 123°F | 68–149°F | ±1°F | 50°F to 122°F | ±3°F |
| Certification | not specified | CSA | CSA | not specified | CSA | CSA | CSA | CSA | CSA | CSA | CSA | not specified | CSA | not specified | CSA certified |
| Dimensions | not specified | 15 x 15 x 15 in | 14.96 x 14.96 x 14.18 inches | 15 x 15 inches | 4.33 x 11.4 x 14.8 inches | 12.7 x 12.7 x 12.7 inches | 17.3 x 5.12 x 5.12 in | 15 x 15 x 15 inches | 17 x 16 x 16 inches | 15 x 15 x 15 inches | 15 x 15 x 15 inches | 15 x 15 x 15 inches | 15"H x 15"L x 14.4"W | 17.3 x 5.12 x 11.8 inches | 15 x 15 x 15 inches |
| Use | RV | RV | RV | RV | Camping, RV | RV | Camping, RV | RV | RV | RV | RV | RV, Under Sink | RV | Camping, RV, Cabins | RV |
| Features | not specified | not specified | not specified | not specified | Overheat Protection | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified |
| Weight | 32.9 pounds | 15.5 pounds | 24 pounds | 26.9 pounds | 10 pounds | 20.5 pounds | 13 pounds | 28 pounds | not specified | not specified | not specified | 21.2 pounds | 30.9 pounds | 14 pounds | 28.5 pounds |
| Size | 6 Gallon | not specified | not specified | 42000 BTU | Classic | not specified | not specified | 15"x15" | 60000BTU | InstaShower 8 Plus | not specified | not specified | not specified | not specified | not specified |
| Color | Steel | Silver | White | White | White | Tankless, Silver Water Heater | Gray | Black 15"x15" | White(60000BTU) | InstaShower 8 Plus, Black | InstaShower 7, Silver | White | IS 9 Pro, White | White | White |
| Model | 5239A | JF.JSQ19-10FWH-B-NA | AP-AWH-RV10W-NEW | TMRVQ-05010242 | AY132 | HRU-RG060-A1 | BW158GCA | RESHUIQI | JHRW000002 | FS08B1SBD | FS07B1S | RC40G-W | FS10B1S | BD158N | RV-65000W |
Is an RV tankless water heater worth it for your rig?
An RV-rated unit fits standard 15-inch or 12.7-inch compartments, allowing direct replacement of existing heaters. Propane models provide continuous hot water up to 3.9 GPM, while electric mini-tanks offer point-of-use heating for specific sinks. If you camp at high elevations, look for units rated up to 9,800 feet. Dual-outlet designs add flexibility for indoor and outdoor washing. The right choice depends on your fuel source and available space.
Worth it if
- You need continuous hot water for full RV showering
- You frequently camp at high elevations
- You want dual gas and electric heating options
Skip it if
- You only need hot water for a single sink
- You do not have propane or 120V power access
- Your installation space requires a non-standard cutout size
If you need power for your travels, see our guide on the best generators for RV.
How we selected RV heaters
We identified products by checking Amazon listings for the Use: RV feature in titles or feature lists. We only included one size or variant per product family. All details come from the specifications and feature lists published on the listings. We do not handle products physically. The guide covers 15 models chosen strictly by their published specs.
We ordered these items by availability first, then by the listing's overall rating weighted by count, and finally by how many guide criteria the specs meet. This approach ensures you see the most relevant RV water heaters first. We focus on practical data to help you compare dimensions, fuel types, and flow rates for your specific camping needs.
How to choose the right one
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Check fuel source availability
Your RV’s existing fuel infrastructure dictates your heating options. If you already have LP gas lines, a propane unit like the VEVOR 42,000 BTU model offers continuous on-demand hot water without draining batteries. Electric models, such as the Suburban 6-Gallon, require shore power or a generator to operate. Some units support both, giving you flexibility when camping at sites with varying hookups. Verify your rig’s current fuel setup before buying to avoid installation conflicts or the need for new piping and electrical work.
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Measure compartment dimensions
Most RV water heater compartments have standard cutouts, typically 15 by 15 inches or 12.7 by 12.7 inches. The Suburban 6-Gallon fits the smaller 12.7-inch square space, while many propane units like the APUS 68,000 BTU require the larger 15-inch profile. Measure your existing opening width, height, and depth carefully. If you choose a compact portable unit like the Camplux 5L, dimensions matter less for installation but still affect storage space. Matching the physical size ensures a direct swap without modifying cabinetry or framing.
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Assess flow rate needs
Flow rate determines how many fixtures can run simultaneously. Higher BTU propane models like the APUS 68,000 BTU deliver up to 3.9 GPM, supporting showers and sinks at the same time. Lower-output portable heaters, such as the Camplux 1.58 GPM, are better for single-sink use or outdoor washing. If you need hot water for multiple uses, choose a unit with a higher GPM rating. Check the specifications for flow rate to ensure the heater meets your household’s daily water usage demands without pressure drops.
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Verify altitude compatibility
Propane combustion efficiency drops at high elevations. If you camp in mountainous regions, select a heater rated for high-altitude operation. The Orbek 60,000 BTU and FOGATTI InstaShower 7 models are engineered to perform reliably up to 9,800 feet. Standard units may struggle to ignite or maintain temperature in thin air. Check the product specifications for altitude ratings before purchasing. This ensures consistent hot water delivery regardless of your elevation, preventing frustrating performance issues during high-altitude travel.
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Determine installation location
Decide whether you need an indoor replacement or an outdoor portable unit. Indoor models like the Ranein 4-Gallon Mini-Tank fit under sinks for point-of-use heating, requiring 120V power. Outdoor propane units, such as the Camplux 5L, are designed for exterior mounting and off-grid washing. Consider where you will place the unit and whether it requires ventilation or electrical access. Choosing the right location simplifies installation and ensures the heater operates safely within your RV’s layout constraints.
Frequently asked questions
Which tankless water heater is best for RVs with dual fuel needs?
The Suburban 6-Gallon Gas and Electric RV Water Heater is the top choice for dual-source heating. It allows you to use either campsite electricity or LP gas. This flexibility ensures steady hot water regardless of your power availability. The unit measures 12.7 inches square and weighs 32.9 pounds, fitting standard RV cutouts.
What is the highest flow rate available for RV tankless heaters?
The Ranein 65,000 BTU and APUS 68,000 BTU models both deliver a high flow rate of 3.9 GPM. These units are ideal for RV families needing stable temperatures during extended showers. The Ranein model weighs 15.5 pounds, while the APUS unit weighs 24 pounds, both fitting standard 15-inch compartments.
Can I install a tankless water heater outdoors on my RV?
Yes, several models are designed for outdoor installation. The Camplux 5L and Camplux 1.58 GPM portable propane heaters support outdoor use. They operate on battery ignition and minimal water pressure, making them suitable for off-grid washing. These units provide independent hot water without tapping into your RV’s electrical system.
Which heater works best for high-altitude RV camping?
The Orbek 60,000 BTU 12V RV Tankless Water Heater is engineered for high elevations up to 9,800 feet. It provides reliable on-demand propane performance in mountain conditions. The FOGATTI InstaShower 7 also supports operation up to 9,800 feet with -22°F freeze protection, ensuring dependable heating in cold, high-altitude environments.
Do any RV tankless heaters offer remote control capabilities?
The Orbek 60,000 BTU 12V RV Tankless Water Heater includes a remote control for convenient operation. This feature allows you to adjust settings without accessing the unit directly. Its compact 12.7-inch square footprint and 20.5-pound weight make it a practical solution for mobile living spaces requiring easy temperature management.
What is the best option for under-sink RV heating?
The Ranein 4-Gallon Electric Mini Tank is the best under-sink option. It delivers point-of-use electric heating for RV sinks with 120V power access. The unit features a 304 stainless steel tank and a compact 15-inch cube design. It provides durable performance without requiring gas hookups, fitting dedicated sink spaces effectively.
Which heater fits standard 15-inch RV compartments?
Most propane models in this guide fit standard 15-inch compartments. The VEVOR 42,000 BTU, Poukaran 65,000 BTU, and FOGATTI InstaShower 8 Plus all measure 15 inches square. These dimensions allow for straightforward replacement of existing heaters in compatible RV compartments, ensuring a seamless installation process for your setup.