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20 Best Tankless Hot Water Heater For Rv (2023 Updated)

A tankless hot water heater for an RV is a water heater that doesn’t have a tank. Instead, it heats water on demand as you need it. This type of water heater is more efficient than a traditional tank water heater, because it doesn’t have to heat and re-heat a tank of water.

Tankless hot water heaters are also smaller and take up less space than a tank water heater.

20 Best Tankless Hot Water Heater For Rv

Product Image Product Name Features Price

Girard 2GWHAM Tankless Water Heater GSWH-2

  • Eliminates weight of water in a storage tank
  • Regulates the burner to maintain the set hot water temperature
  • Built-in freeze protection “ no bypass needed to winterize

Suburban Mfg 5286A Nautilus on Demand Water Heater

  • 2-Stage Modulating Combustion System
  • Built-in freeze protection mechanism
  • 3-Try Direct Spark Ignition

Marey Power Portable Propane GAS Tankless Water Heater GA5PORT

  • Save energy: gas and water regulator controls
  • Anti-dry safety switch
  • Automatic IC ignition system

Excel Vent-Free Propane LP 1.6 GPM Tankless Water Heater New 10011

  • Starts with only 2 PSI of Water Pressure – Amazon Exclusive
  • Exclusive – Vent-Free Technology No expensive Flue required
  • Compact size: front 11.5” – depth 6” – height 16”

PrecisionTemp RV-550 Tankless Water Heater – Wall Vented

  • Designed specifically for RVs, trailers, tiny houses, cabins, mobile washing services, and more
  • Takes up 1/2 the space and weighs 1/3 as much as a 10-gallon tank

EZ Tankless 101 2.0 GPM 42,500 BTU Propane GAS Portable Water Heater

  • Fully automatic operation, units ignites with the flow of water and extinguishes when flow stops
  • Shower head with hose included with unit

Camplux 10L 2.64 GPM Outdoor Portable Tankless Water Heater

  • The Camplux BW264 is ideal for camping, to the beach or family vacations mountain cabins horse stables etc
  • It can be also mounted indoors where is well ventilated if a flue pipe is intalled additionally

Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater

  • A great for camping, to the beach or family vacations mountain cabins horse stables etc
  • With Oxygen Depletion Sensor Protection, it can be also installed indoors where is well ventilated

Eccotemp L5 Point-of-Use Outdoor Tankless Portable Water Heater with Flojet Pump …4.13544.1 out of 5 stars. 354 product reviews.Tankless · Propane

  • CSA certified for use in the US and Canada This tankless water heater meets and exceeds all safety and efficiency requirements according to the DOE.

Eccotemp L5 Tankless Water Heater and Outdoor Shower – 1.5 GPM

  • L13 lbs.

Suburban 5186A Nautalis On-Demand Water Heater

  • Built-in freeze protection mechanismnbsp.
  • State-of-the-art 3-Try Direct Spark Ignitionnbsp36 lbs with the vent assemblynbsp.

Rheem RTEX-13 Professional Classic Electric Tankless Hot Water Heater

  • 13kw

Eccotemp L5 Point-of-Use Outdoor Tankless Portable Water Heater with Flojet Pump – Liquid Propane – 1.5 GPM

  • Advanced temperature control prevents temperature fluctuations.
  • Portable, making this heater perfect for camping.
  • Up to 1.5 gallons per minute (GPM) are heated via 11 kilowatts of heating power.

Rheem Retex-13 KW Self-Modulating 2.54 GPM Tankless Electric Water Heater

  • Energy and cost savings: heats water only when it is needed for savings of up to 50% on water heating costs when used in a point-of-use application

Marey GA5LP 2.0 GPM Liquid Propane Tankless GAS Water Heater

  • 5L

Eccotemp i12-LP Indoor Liquid Propane Tankless Water Heater

  • Tempered glass front panel
  • Child locking technology
  • LED temperature display
Girard 2GWHAM Tankless Water Heater GSWH-2
  • Eliminates weight of water in a storage tank
  • Regulates the burner to maintain the set hot water temperature
  • Built-in freeze protection “ no bypass needed to winterize
Suburban Mfg 5286A Nautilus on Demand Water Heater
  • 2-Stage Modulating Combustion System
  • Built-in freeze protection mechanism
  • 3-Try Direct Spark Ignition
Marey Power Portable Propane GAS Tankless Water Heater GA5PORT
  • Save energy: gas and water regulator controls
  • Anti-dry safety switch
  • Automatic IC ignition system
Excel Vent-Free Propane LP 1.6 GPM Tankless Water Heater New 10011
  • Starts with only 2 PSI of Water Pressure – Amazon Exclusive
  • Exclusive – Vent-Free Technology No expensive Flue required
  • Compact size: front 11.5” – depth 6” – height 16”
PrecisionTemp RV-550 Tankless Water Heater – Wall Vented
  • Designed specifically for RVs, trailers, tiny houses, cabins, mobile washing services, and more
  • Takes up 1/2 the space and weighs 1/3 as much as a 10-gallon tank
EZ Tankless 101 2.0 GPM 42,500 BTU Propane GAS Portable Water Heater
  • Fully automatic operation, units ignites with the flow of water and extinguishes when flow stops
  • Shower head with hose included with unit
Camplux 10L 2.64 GPM Outdoor Portable Tankless Water Heater
  • The Camplux BW264 is ideal for camping, to the beach or family vacations mountain cabins horse stables etc
  • It can be also mounted indoors where is well ventilated if a flue pipe is intalled additionally
Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater
  • A great for camping, to the beach or family vacations mountain cabins horse stables etc
  • With Oxygen Depletion Sensor Protection, it can be also installed indoors where is well ventilated
Eccotemp L5 Point-of-Use Outdoor Tankless Portable Water Heater with Flojet Pump …4.13544.1 out of 5 stars. 354 product reviews.Tankless · Propane
  • CSA certified for use in the US and Canada This tankless water heater meets and exceeds all safety and efficiency requirements according to the DOE.
Eccotemp L5 Tankless Water Heater and Outdoor Shower – 1.5 GPM
  • L13 lbs.
Suburban 5186A Nautalis On-Demand Water Heater
  • Built-in freeze protection mechanismnbsp.
  • State-of-the-art 3-Try Direct Spark Ignitionnbsp36 lbs with the vent assemblynbsp.
Rheem RTEX-13 Professional Classic Electric Tankless Hot Water Heater
  • 13kw
Eccotemp L5 Point-of-Use Outdoor Tankless Portable Water Heater with Flojet Pump – Liquid Propane – 1.5 GPM
  • Advanced temperature control prevents temperature fluctuations.
  • Portable, making this heater perfect for camping.
  • Up to 1.5 gallons per minute (GPM) are heated via 11 kilowatts of heating power.
Rheem Retex-13 KW Self-Modulating 2.54 GPM Tankless Electric Water Heater
  • Energy and cost savings: heats water only when it is needed for savings of up to 50% on water heating costs when used in a point-of-use application
Marey GA5LP 2.0 GPM Liquid Propane Tankless GAS Water Heater
  • 5L
Eccotemp i12-LP Indoor Liquid Propane Tankless Water Heater
  • Tempered glass front panel
  • Child locking technology
  • LED temperature display

1. Girard 2GWHAM Tankless Water Heater GSWH-2

Girard 2GWHAM Tankless Water Heater GSWH-2

  • Eliminates weight of water in a storage tank
  • Regulates the burner to maintain the set hot water temperature
  • Built-in freeze protection “ no bypass needed to winterize
  • No tank means no anode rod needed to protect against corrosion

Check Latest Price

Sold By Price
Amazon.com – Seller
eBay
Walmart
United RV Center

Product Details

Specifications

Details
Depth 15-1/2 Inch
Energy Source LP Gas
Height 12-1/2 Inch
Ignition Type Direct Spark Ignition
Warranty 2 Year

Reviews From Real Customers

nyla Jo hubbard
Ralphie
Dodson LaTanya

2. RecPro RV Tankless on Demand GAS Hot Water Heater W Remote Control Black

RecPro RV Tankless on Demand GAS Hot Water Heater W Remote Control Black

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Sold By Price
Amazon.com – Seller

Product Details

Specifications

Details
Package Dimensions 25.5 x 18.4 x 18.4 inches

3. Suburban Mfg 5286A Nautilus on Demand Water Heater

Suburban Mfg 5286A Nautilus on Demand Water Heater

  • 2-Stage Modulating Combustion System
  • Built-in freeze protection mechanism
  • 3-Try Direct Spark Ignition
  • 36lbs with the vent assembly

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Sold By Price
Amazon.com
eBay
Walmart
Camping World

Product Details

Specifications

Details
Depth 20 Inch
Energy Source LP Gas
Height 12-1/2 Inch
Ignition Type Pilot And Direct Spark Ignition
Warranty 2 Year

Reviews From Real Customers

Raul A.
Del Windham
chris m

4. Marey Power Portable Propane GAS Tankless Water Heater GA5PORT

Marey Power Portable Propane GAS Tankless Water Heater GA5PORT

  • Save energy: gas and water regulator controls
  • Anti-dry safety switch
  • Automatic IC ignition system
  • Low water pressure startup function
  • Portable: compact design and light weight

Check Latest Price

Sold By Price
Amazon.com – Seller
Sears – Ami Ventures Inc
www.mddcprint.com

Product Details

Specifications

Details
Capacity 5 Gallons
Included Components Gas hose with CSA approved regulator.
Country/Region Of Origin China
Product Dimensions 4.7 x 11.4 x 17 inches
Is Discontinued By Manufacturer No

Reviews From Real Customers

denbr-7927
bandklawsons
johnowhite

5. Excel Vent-Free Propane LP 1.6 GPM Tankless Water Heater New 10011

Excel Vent-Free Propane LP 1.6 GPM Tankless Water Heater New 10011

  • Starts with only 2 PSI of Water Pressure – Amazon Exclusive
  • Exclusive – Vent-Free Technology No expensive Flue required
  • Compact size: front 11.5” – depth 6” – height 16”
  • 2 SIZE D Batteries Included (For Automatic Ignition)

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Sold By Price
Amazon.com – Seller
FactoryPure

Product Details

Specifications

Details
Capacity 1.6 Gallons
Power Source PROPANE LPG GAS
Maximum Flow Rate 1.6 Gallons Per Minute
Style Indoor Installation
Maximum Operating Pressure 120 Pound per Square Inch

Reviews From Real Customers

Deborah Doherty
Aquilla C.

6. RV Tankless Water Heater 12 V on Demand Hot Water Heater 42,000 BTU

RV Tankless Water Heater 12 V on Demand Hot Water Heater 42,000 BTU

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Sold By Price
Amazon
RecPro

Product Details

7. Suburban Nautilus on Demand Water Heater

Suburban Nautilus on Demand Water Heater

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Sold By Price
Amazon
eBay – kchometrailer
Walmart – One Source RV LLC
United RV Center

Product Details

Specifications

Details
Depth 20 Inch
Energy Source LP Gas
Height 12-1/2 Inch
Ignition Type Direct Spark Ignition
Warranty 2 Year

Reviews From Real Customers

S.D.S.

8. PrecisionTemp RV-550 Tankless Water Heater – Wall Vented

PrecisionTemp RV-550 Tankless Water Heater - Wall Vented

  • Designed specifically for RVs, trailers, tiny houses, cabins, mobile washing services, and more
  • Takes up 1/2 the space and weighs 1/3 as much as a 10-gallon tank
  • No pilot light and very high propane efficiency
  • Reliable, proven VariFlame technology control system
  • Designed, assembled and tested in the USA

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Sold By Price
Amazon
Rescue Supply

Product Details

Reviews From Real Customers

Jeffrey M.

9. EZ Tankless 101 2.0 GPM 42,500 BTU Propane GAS Portable Water Heater

EZ Tankless 101 2.0 GPM 42,500 BTU Propane GAS Portable Water Heater

  • Fully automatic operation, units ignites with the flow of water and extinguishes when flow stops
  • Shower head with hose included with unit
  • Independent control of water flow and gas flow making it easy to regulate the water temperature
  • Low water pressure ignition

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Sold By Price
Amazon
eBay
Walmart
Home Depot

Product Details

Specifications

Details
Application Type Point of Use
Efficiency Level High
Finish Family White
Flow Rate @ 35°F Rise (gallons/min) 2 gal (US)/min
Flow Rate @ 45°F Rise (gallons/min) 1.6 gal (US)/min

Reviews From Real Customers

upyours54321
Annie F.
Lucas S.

10. Camplux 10L 2.64 GPM Outdoor Portable Tankless Water Heater

Camplux 10L 2.64 GPM Outdoor Portable Tankless Water Heater

  • The Camplux BW264 is ideal for camping, to the beach or family vacations mountain cabins horse stables etc
  • It can be also mounted indoors where is well ventilated if a flue pipe is intalled additionally
  • The system also works great on modified water systems with a 12 volt water pump
  • The operating propane gas pressure is 0.4PSI with maximum power output 68,000btu/hour

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Sold By Price
Amazon
eBay
Lowe’s
Wayfair

Product Details

Specifications

Details
Weight 18.07 lb

Reviews From Real Customers

rottenjeff
Katfl
BullRun

11. Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater

Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater

  • A great for camping, to the beach or family vacations mountain cabins horse stables etc
  • With Oxygen Depletion Sensor Protection, it can be also installed indoors where is well ventilated
  • Turn the ignition on with 2 D cell batteries whenever electricity is not needed
  • The system also works great on modified water systems with a 12 volt water pump

Product Details

Specifications

Details
Size AY132

Reviews From Real Customers

burnhad
bigcol70uk

12. Eccotemp L5 Point-of-Use Outdoor Tankless Portable Water Heater with Flojet Pump …4.13544.1 out of 5 stars. 354 product reviews.Tankless · Propane

Eccotemp L5 Point-of-Use Outdoor Tankless Portable Water Heater with Flojet Pump ...4.13544.1 out of 5 stars. 354 product reviews.Tankless · Propane

  • CSA certified for use in the US and Canada This tankless water heater meets and exceeds all safety and efficiency requirements according to the DOE.
  • Features a safety shut-off that is activated when the unit runs longer than 20 minutes or is tilted more than 45 degrees in either direction.
  • Low pressure activation of 20 PSI and is easy to connect to any standard garden hose.
  • Rated at 15 Gallons per minute (GPM) of hot water output with an achievable temperature range of 50 – 140 degrees Fahrenheit.

Product Details

Specifications

Details
Fuel Type Liqiuid Propane

Reviews From Real Customers

ghislaiblange0
Dom07
La terreur

13. Eccotemp L5 Tankless Water Heater and Outdoor Shower – 1.5 GPM

Eccotemp L5 Tankless Water Heater and Outdoor Shower - 1.5 GPM

  • L13 lbs.

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Amazon
Walmart
Overtons.com

Product Details

Specifications

Details
Dimensions 18″ x 11.5″ x 5.25″
Unit Weight 14.75 lb
MFG Part No. L5

Reviews From Real Customers

Happy Knox Camper
Sammy L.
Lawrence S.

14. Suburban 5186A Nautalis On-Demand Water Heater

Suburban 5186A Nautalis On-Demand Water Heater

  • Built-in freeze protection mechanismnbsp.
  • State-of-the-art 3-Try Direct Spark Ignitionnbsp36 lbs with the vent assemblynbsp.
  • Polar White for 6 galnbsp6277APWnbsp.
  • Polar White for 10 gal.nbsp.
  • PILOT Pnbsp232767 nbsp.

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Sold By Price
Amazon
Dyers RV and Trailer

Product Details

Specifications

Details
Gallons Tankless
BTU’s 60,000
Heat Source Gas
Ignition Electric
Dimensions 12.5″ H x 12.5″ W” x 19.5″ D

15. Rheem RTEX-13 Professional Classic Electric Tankless Hot Water Heater

Rheem RTEX-13 Professional Classic Electric Tankless Hot Water Heater

  • 13kw

Check Latest Price

Sold By Price
Amazon
Wholesale Water Heaters & More
Miami Water Heater
Sears – Ami Ventures Inc

Product Details

Specifications

Details
Water Heater Design Whole House
Water Heater Application General Purpose
Commercial / Residential Commercial/Residential
Watts – Water Heaters 13,000 W
Amps – Water Heaters 54 A

Reviews From Real Customers

asta
DarrylM
nonya

16. Eccotemp L5 Point-of-Use Outdoor Tankless Portable Water Heater with Flojet Pump – Liquid Propane – 1.5 GPM

Eccotemp L5 Point-of-Use Outdoor Tankless Portable Water Heater with Flojet Pump - Liquid Propane - 1.5 GPM

  • Advanced temperature control prevents temperature fluctuations.
  • Portable, making this heater perfect for camping.
  • Up to 1.5 gallons per minute (GPM) are heated via 11 kilowatts of heating power.

Check Latest Price

Sold By Price
Amazon
Walmart
Cabela’s
Build.com

Product Details

Specifications

Details
Minimum Temperature (F) 80 °F
Uniform Energy Factor 0.8
Flow Rate @ 45°F Rise (gallons/min) 1.2 gal (US)/min
Fuel Type Gas
Minimum Activation Rate (gpm) 0.75

Reviews From Real Customers

Surfer5920

17. Rheem Retex-13 KW Self-Modulating 2.54 GPM Tankless Electric Water Heater

Rheem Retex-13 KW Self-Modulating 2.54 GPM Tankless Electric Water Heater

  • Energy and cost savings: heats water only when it is needed for savings of up to 50% on water heating costs when used in a point-of-use application
  • Space savings: small, compact design fits perfectly in tight places like under cabinets and sinks
  • Easy to maintain: durable, easy-to-replace heating elements

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Amazon
eBay
Home Depot
BUYA.COM – Buya – Mid Valley Pawn

Product Details

Specifications

Details
Required Volt Connection 240 volt
Application Type Residential
Indoor/Outdoor Indoor
Fuel Type Electric
Number of Showers 1-2

Reviews From Real Customers

Louis Murray
jesse patterson
Ziggy Moo

18. Marey GA5LP 2.0 GPM Liquid Propane Tankless GAS Water Heater

Marey GA5LP 2.0 GPM Liquid Propane Tankless GAS Water Heater

  • 5L

Check Latest Price

Sold By Price
Amazon
GadgetsGo

Product Details

Specifications

Details
Indoor/Outdoor Indoor
Number of Showers 1-2
Application Type Residential
Gas Type Propane
Efficiency Level Super High

Reviews From Real Customers

fafreind
12thMan
ronald r.

19. Eccotemp i12-LP Indoor Liquid Propane Tankless Water Heater

Eccotemp i12-LP Indoor Liquid Propane Tankless Water Heater

  • Tempered glass front panel
  • Child locking technology
  • LED temperature display
  • True 1/2″” NPT water fittings

Product Details

Specifications

Details
Capacity 4 GPM
Battery Required No
Product Weight 33 lb
Dimensions L x W x H (in.) 36 x 17 x 10
Typical Application Water heater

Reviews From Real Customers

FoodGuy269
Kevin B
Ce P.

20. Precision Temp RV-550 EC Tankless Water Heater, Black

Precision Temp RV-550 EC Tankless Water Heater, Black

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Sold By Price
eBay – rescue-supply
Walmart – Buy Box Pro
OffGridHarbor

Product Details

Specifications

Details
Assembled Product Weight 32 lbs
Assembled Product Dimensions (L x W x H) 14.00 x 14.00 x 15.00 Inches

Conclusion

There are many factors to consider when choosing a tankless hot water heater for an RV, including the size and type of RV, the climate in which it will be used, the number of people using it, and the types of activities that will be using the hot water.

Some people prefer tankless hot water heaters because they are more efficient and take up less space than traditional tank heaters. Others find that tankless hot water heaters can be more expensive to operate and maintain.

Ultimately, the best type of hot water heater for an RV depends on the individual needs and preferences of the RV owner.

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