Top 10 Best Portable Tankless Water Heater In 2023

If you’re tired of running out of hot water during your shower or struggling with bulky traditional water heaters, the best portable tankless water heater may be just what you need. This innovative appliance offers numerous benefits over traditional water heaters, including energy efficiency, cost savings, and convenience.

Table of Contents

Tankless Water Heater, GASLAND Outdoors BE158B 1.58GPM 6L Portable Gas Water Heater, Instant Propane Water Heater, Overheating Protection, Easy to Install, Use for RV Cabin Barn Camping Boat, Black

Best Portable Tankless Water Heater-Tankless Water Heater, GASLAND Outdoors BE158B 1.58GPM 6L Portable Gas Water Heater, Instant Propane Water Heater, Overheating Protection, Easy to Install, Use for RV Cabin Barn Camping Boat, Black) image
Tankless Water Heater, GASLAND Outdoors BE158B 1.58GPM 6L Portable Gas Water Heater, Instant Propane Water Heater, Overheating Protection, Easy to Install, Use for RV Cabin Barn Camping Boat, Black image
  • 🎁【Safety Certificate 】Our products were certificated by CSA North America, safe as per Canadian and US Standard. Flame failure device, anti-freezing protection, over heating protection to ensure the family safety. Automatically decrease water pressure between 3.6-110PSI. The anti-freezing drain plug can discharge the residual water to avoid freezing in cold areas or in case of long time no use. High water temperature protection over 167 °F. Shut off gas supply automatically under unexpectable flameout.
  • 🎁【Lightweight Portable Design】 Compact size and lightweight design for easily carry. It can bring a amazing hot shower for you when you are camping, to the beach, etc. Also you can wash your pets with this tankless water heater in outdoor. Hang it using the mounting bracket on the top/back of the gas water heater. It only takes you a few minutes to install it. Or you can install it according to the instructions.
  • 🎁【On Demand Hot Water】 Maximum power output 41,000BTU/Hr, get instant endless hot water easily wherever you are. No need to preheat before using tankless water heater. As soon as you turn on the tap, the water flows with your desired temperature. Low water pressure start up, just need 3.6 PSI of water pressure. 1.58 gallons per minute of on-demand hot water. Fully adjustable heat and water flow.
  • 🎁【Energy Saving】 Compact and light weight structure with 11.5% energy saving technology. The propane water heater exchanger and main burner are desinged with advanced combustion technology to decrease gas consumption and burning noise. You will save more when you use our tankless water heater.
  • 🎁【Important Tips】To avoid gas leakage caused by improper sealing of the water heater, DO NOT TWINE TEFLON TAPE between gas regulator and gas inlet pipe. The gas water heater will “caught on fire “with improper operation. Always check gas leakage before operation.

Airthereal 6L 1.58GPM Outdoor Portable Propane Gas Tankless Water Heater, Instant Propane Water Heater, Easy to Install, Use for Camping, RV and Pet Bath, Evenfall series, Yellow

Airthereal 6L 1.58GPM Outdoor Portable Propane Gas Tankless Water Heater, Instant Propane Water Heater, Easy to Install, Use for Camping, RV and Pet Bath, Evenfall series, Yellow) image
Airthereal 6L 1.58GPM Outdoor Portable Propane Gas Tankless Water Heater, Instant Propane Water Heater, Easy to Install, Use for Camping, RV and Pet Bath, Evenfall series, Yellow image
  • Endless Hot Water: Maximum power output of 41,000BTU/hour instantly provides 1.58 gallons of hot water per minute wherever you are. The heat level and flow rate are fully adjustable with no need for preheating.
  • Portable Design: Compact size and lightweight make the water heater easy to carry and allow you to enjoy an amazing hot shower after a long day of camping, in your RV, or for giving your pet a bath.
  • Easy to Install: Hang it using the upper handle of the gas water heater or mount it to the wall. And install the water pipe and connect a propane tank with the water heater according to the instructions. It only takes you a few minutes to install it.
  • Energy Saving: Our propane water heater has a burner designed to reduce gas consumption and combustion noise, while saving you 11.5% on gas consumption, so you can get more hot water for less money.
  • Safety Features: A flame sensor automatically shuts off the gas if the flame goes out, anti-freeze protection drains residual water to avoid freezing during cold spells, and overheating protection prevents the hot water from going over 167 degrees.

Flame King Tankless Outdoor Portable Propane Gas 10L 2.64GPM Water Heater 68,000 BTU for Hot Water Shower, RV, Camping, Farm, Cabins

Flame King Tankless Outdoor Portable Propane Gas 10L 2.64GPM Water Heater 68,000 BTU for Hot Water Shower, RV, Camping, Farm, Cabins) image
Flame King Tankless Outdoor Portable Propane Gas 10L 2.64GPM Water Heater 68,000 BTU for Hot Water Shower, RV, Camping, Farm, Cabins image
  • Fully adjustable control knobs and visual digital meter – Winter/Summer Setting, MIN/MAX Gas Setting, MAX/MIN Water Flow Rate Setting, Digital Water Temperature Meter
  • Durable steel cased water heater designed to last
  • On/off water control shower head and 4.5 Feet of Stainless Steel Wrapped Hose to avoid kinks and punctures.
  • Regulator and 4.5 ft. hose included for use with a BBQ propane tank (QCC1 Type-1 Valve

Tankless Water Heater 4.74GPM 18L Outdoor Portable GasHot Water Heater Instant Propane Water Heater with Digital Display Multi-Protection for Camping Trips Boat Cabins

Tankless Water Heater 4.74GPM 18L Outdoor Portable GasHot Water Heater Instant Propane Water Heater with Digital Display Multi-Protection for Camping Trips Boat Cabins) image
Tankless Water Heater 4.74GPM 18L Outdoor Portable GasHot Water Heater Instant Propane Water Heater with Digital Display Multi-Protection for Camping Trips Boat Cabins image
  • 【Premiun Water Heater】-Tankless Water Heater with CSA Approved Regulator, with more safety protection such as flame failure device, anti-freezing protection,over heating protection,Just need 3.6PSI of water pressure,4.74 gallons of hot water can be output per minute. The maximum temperature raise is 167 °F,Applicable only Propane(LPG)
  • 【Efficient & Energey Saving】-The Propane Water Heater exchanger and main burner are desinged with advanced combustion technology to decrease gas consumption and burning noise.Maximum power output 41000btu/hour, you will get instant endless hot water easily wherever you are.Compact and lightweight structure with 11.5% energy saving technology,so you can get more hot water for less money.
  • 【Portable Design】-Portable Water Heater size and lightweight make the water heater easy to carry and allow you to enjoy an amazing hot shower after a long day of camping, in your RV, or for giving your pet a bath,Size: 24.23×5.9×13.4 inches,Gas Hot Water Heater is Powered by 2 pcs size “D”cell Batteries.
  • 【Complete Accessories】-This tankless water heater comes with CSA approval 5FT Gas Regulator, 5 Spray Modes high pressure Shower Head with 59in(1.5m) extended Long Stainless Steel Hose and Shower Holder,There are three interface ports under propane water heater. The left one is the Air inlet. ​The middle one is the shower port,and The right one is the water inlet.
  • 【Wide Usage】- This Camping Heater,Perfect for Outdoor Shower,Which Bringing an Amazing hot Shower for you When you are Camping, Hiking, Fishing, Beaching, Portable Hot Water Sink, RV/SUV/MPV, etc. Besides, you can Also Wash your Pets with this Tankless Water Heater,Always check gas leakage before operation.

Camplux Tankless Water Heater, 1.32 GPM Portable Propane Outdoor Camping Water Heater, 5L, AY132, White

Camplux Tankless Water Heater, 1.32 GPM Portable Propane Outdoor Camping Water Heater, 5L, AY132, White) image
Camplux Tankless Water Heater, 1.32 GPM Portable Propane Outdoor Camping Water Heater, 5L, AY132, White image
  • Lightweight, Compact & Portable Design: The 10 pounds lightweight portable water heater’s folding handle keeps it out of the way and enables easy setup outside.
  • Flow Rate & Temperature Specification: The temperature raise is 114.8℉ (46℃) at its highest point and 46.4℉ (8℃) is at its lowest point of 1.32 GPM. Also, 1.32 gallons of hot water can be produced per minute at the flow rate of 1.32 GPM.
  • Versatile Applications: The lowest water pressure at beginning for the water heater is 3.0 PSI. For off-grid and rural areas, this hot water generator powered by two size D batteries is ideal. No more chilly outdoor shower anymore.
  • 6-in-1 Protection & CSA Safety Approved: This tankless water heater is CSA Approved with anti-freezing protection, over-heating protection, low water flow protection, dry combustion protection, high water pressure protection and flame failure device.
  • Installation Instruction & Package Content: This Camplux AY132 heater comes with 1-year guarantee, 5 feet premium on/off shower head, 5 feet gas regulator, 1 set US-standard garden hose, and 1 installation hardware pack. Setting up this propane water heater simply takes 10 minutes.
  • Important Installation Tip: To avoid gas leakage caused by improper sealing of the water heater, DO NOT TWINE TEFLON TAPE between gas regulator and gas inlet pipe. Read the directions before installation check for gas leaks at all times before operating.
  • Warm Maintenance Tips: Damage caused by freezing is not covered under Camplux warranty. It must be properly drained if the water heater stored in cold climate, Freeze damage can occur in the heat exchanger or water valves. To drain the device properly, please open the drain stern located at the bottom right of the water heater . You can do so by turning in a counter clockwise direction. Please disconnect all incoming and outgoing water lines to ensure proper drainage from the water heater. When not in use, fully disconnect gas, incoming and outgoing waterlines. Store in a warm dray place.

Camplux 1.32 GPM Portable Water Heater Tankless Water Heater Propane Outdoor Black

Camplux 1.32 GPM Portable Water Heater Tankless Water Heater Propane Outdoor Black) image
Camplux 1.32 GPM Portable Water Heater Tankless Water Heater Propane Outdoor Black image
  • Portable, Lightweight Design: This portable water heater weights only 10 pounds and comes with folding handle keeps it out of the way and enables easy setup outside
  • Simple, Easy Hot Showers: The camplux portable hot water heater is easy to set-up. All you need is the water heater, gas bottle away you go! Adjust your temp is as just as easy. Find your perfect flow with the easy to use temperature dials.Setting up this propane water heater simply takes 10 minutes
  • More Showers with Less Water: Once you have your ideal temperature you can simply control your shower by switching the shower rose on / off. Giving you time to soap up while saving water.Turn on your shower head again and take off where you left
  • Versatile Applications: The lowest water pressure at beginning for the water heater is 3.0 PSI. For off-grid and rural areas, this hot water generator powered by two size D batteries is ideal. No more chilly outdoor shower anymore
  • 6-in-1 Protection & CSA Safety Approved: This tankless water heater is CSA Approved with anti-freezing protection, over-heating protection, low water flow protection, dry combustion protection, high water pressure protection and flame failure device
  • Package Content: This Camplux AY132B heater comes with 1-year guarantee, 5 feet premium on/off shower head, 5 feet gas regulator, 1 set US-standard garden hose, and 1 installation hardware pack
  • Safety Tip: To avoid gas leakage caused by improper sealing of the water heater, DO NOT TWINE TEFLON TAPE between gas regulator and gas inlet pipe. Read the directions before installation check for gas leaks at all times before operating
  • Warm Maintenance Tips: It must be properly drained if the water heater stored in cold climate, Freeze damage can occur in the heat exchanger or water valves. To drain the device properly, please open the drain stern located at the bottom right of the water heater . You can do so by turning in a counter clockwise direction. Please disconnect all incoming and outgoing water lines to ensure proper drainage from the water heater. When not in use, fully disconnect gas, incoming and outgoing waterlines. Store in a warm dray place

Tankless Water Heater, GASLAND Outdoors BE158 1.58GPM 6L Outdoor Portable Gas Water Heater, Propane Water Heater, Overheating Protection, Easy to Install, Use for RV Cabin Barn Camping Boat, White

Tankless Water Heater, GASLAND Outdoors BE158 1.58GPM 6L Outdoor Portable Gas Water Heater, Propane Water Heater, Overheating Protection, Easy to Install, Use for RV Cabin Barn Camping Boat, White) image
Tankless Water Heater, GASLAND Outdoors BE158 1.58GPM 6L Outdoor Portable Gas Water Heater, Propane Water Heater, Overheating Protection, Easy to Install, Use for RV Cabin Barn Camping Boat, White image
  • 🎁【CSA Certificate 】 Our products were certificated by CSA North America, safe as per Canadian and US Standard. Flame failure device, anti-freezing protection, over heating protection to ensure the family safety. Automatically decrease water pressure between 3.6-110PSI. The anti-freezing drain plug can discharge the residual water to avoid freezing in cold areas or in case of long time no use. High water temperature protection over 167 °F. Shut off gas supply automatically under unexpectable flameout.
  • 🎁【Lightweight Portable Design】 Compact size and lightweight design for easily carry. It can bring a amazing hot shower for you when you are camping, to the beach, etc. Also you can wash your pets with this tankless water heater in outdoor. Hang it using the mounting bracket on the top/back of the gas water heater. It only takes you a few minutes to install it. Or you can install it according to the instructions.
  • 🎁【On Demand Hot Water】 Maximum power output 41,000BTU/Hr, get instant endless hot water easily wherever you are. No need to preheat before using tankless water heater. As soon as you turn on the tap, the water flows with your desired temperature. Low water pressure start up, just need 3.6 PSI of water pressure. 1.58 gallons per minute of on-demand hot water. Fully adjustable heat and water flow.
  • 🎁【Energy Saving】 Compact and light weight structure with 11.5% energy saving technology. The propane water heater exchanger and main burner are desinged with advanced combustion technology to decrease gas consumption and burning noise. You will save more when you use our tankless water heater.
  • 🎁【Important Tips】To avoid gas leakage caused by improper sealing of the water heater, DO NOT TWINE TEFLON TAPE between gas regulator and gas inlet pipe. The gas water heater will “caught on fire “with improper operation. Always check gas leakage before operation.

Marey GA5PORT Portable Propane Gas Tankless Water Heater, Small, White

Marey GA5PORT Portable Propane Gas Tankless Water Heater, Small, White) image
Marey GA5PORT Portable Propane Gas Tankless Water Heater, Small, White image
  • Naturally vented outdoors: you don’t need to buy a extra venting
  • Serves to a variety of applications, since washing your car, windows cleaning, wash your horse or your dog and take a hot shower
  • Perfect for campsites, cabins, remote areas or just around the house. BTU/h – 35000 BTU/h. Fuel Type – LPG(liquid propane gas). pipe fittings – 1/2 inch NPT, incoming/outgoing water and gas
  • Provide endless hot water on demand only as needed
  • No electrical connection is required
  • Includes a gas hose with csa approved regulator for attaching to a standard liquid propane tank
  • Portable water heater by Marey has a compact design and light weight saves space and is easy to carry anywhere

Tankless Water Heater 4.21GPM 16L Outdoor Portable GasHot Water Heater Instant Propane Water Heater with Digital Display Multi-Protection for Camping Trips Boat Cabins

Tankless Water Heater 4.21GPM 16L Outdoor Portable GasHot Water Heater Instant Propane Water Heater with Digital Display Multi-Protection for Camping Trips Boat Cabins) image
Tankless Water Heater 4.21GPM 16L Outdoor Portable GasHot Water Heater Instant Propane Water Heater with Digital Display Multi-Protection for Camping Trips Boat Cabins image
  • 【Premiun Water Heater】-Tankless Water Heater with CSA Approved Regulator, with more safety protection such as flame failure device, anti-freezing protection,over heating protection,Just need 3.6PSI of water pressure,4.21 gallons of hot water can be output per minute. The maximum temperature raise is 167 °F,Applicable only Propane(LPG)
  • 【Efficient & Energey Saving】-The Propane Water Heater exchanger and main burner are desinged with advanced combustion technology to decrease gas consumption and burning noise.Maximum power output 41000btu/hour, you will get instant endless hot water easily wherever you are.Compact and lightweight structure with 11.5% energy saving technology,so you can get more hot water for less money.
  • 【Portable Design】-Portable Water Heater size and lightweight make the water heater easy to carry and allow you to enjoy an amazing hot shower after a long day of camping, in your RV, or for giving your pet a bath,Size: 21.65×5.9×13.4 inches,Gas Hot Water Heater is Powered by 2 pcs size “D”cell Batteries.
  • 【Complete Accessories】-This tankless water heater comes with CSA approval 5FT Gas Regulator, 5 Spray Modes high pressure Shower Head with 59in(1.5m) extended Long Stainless Steel Hose and Shower Holder,There are three interface ports under propane water heater. The left one is the Air inlet. ​The middle one is the shower port,and The right one is the water inlet.
  • 【Wide Usage】- This Camping Heater,Perfect for Outdoor Shower,Which Bringing an Amazing hot Shower for you When you are Camping, Hiking, Fishing, Beaching, Portable Hot Water Sink, RV/SUV/MPV, etc. Besides, you can Also Wash your Pets with this Tankless Water Heater,Always check gas leakage before operation.

Seeutek Portable Water Heater 1.6GPM/6L, Outdoor Propane Gas Tankless Water Heater, On Demand Water Heater for RV Camping, Instant Hot Water for Shower Overheating Protection White

Seeutek Portable Water Heater 1.6GPM/6L, Outdoor Propane Gas Tankless Water Heater, On Demand Water Heater for RV Camping, Instant Hot Water for Shower Overheating Protection White) image
Seeutek Portable Water Heater 1.6GPM/6L, Outdoor Propane Gas Tankless Water Heater, On Demand Water Heater for RV Camping, Instant Hot Water for Shower Overheating Protection White image
  • 🏝️Product Parameters: Applicable Water Pressure Range: 3.0-145 PSI; Maximum Power Output: 41,000btu/Hr; Water Output Per Minute:1.6GPM/6L; Item Dimensions LxWxH: 11.42×4.9×14.57 inches; Weight: 13.3 pounds. Efficient and energy-saving, lightweight and convenient.
  • 🏝️Excellent Performance:【Instant hot water】: Instant and continuous supply of hot water whenever you need it.【High efficiency and energy saving】: It has two combustion modes in summer and winter, and both the heat exchanger and the main burner adopt the most advanced energy-saving combustion technology, which can reduce gas consumption and noise while ensuring the continuous supply of hot water.
  • 🏝️CSA Safety Certification: Our propane water heater have multiple safety protection settings and have been CSA certified for safety. For example,【Overheat Protection】: When the water temperature exceeds 167℉, the gas supply is automatically shut off.【Anti-freeze Protection】: The anti-freeze drain plug can drain the residual water and avoid freezing when the temperature is low or when it is not used for a long time.
  • 🏝️Convenient and Durable: Our tankless water heater are lightweight and portable, with a portable handle for easy carrying and hanging for outdoor use. This outdoor water heater has a compact and sturdy frame design, not only space saving but also durable and has a long service life. Easy to install and great for outdoor use.
  • 🏝️Multi-scene Application: This instant water heater is suitable for outdoor shower in various scenarios, such as RV shower, outdoor camping, pet washing, outdoor pool shower, outdoor car wash and beach bathing. Provide you with hot water anytime and anywhere. Safe and comfortable, convenient and energy-saving.
  • 🏝️Reliable After-sales Service: As long as you buy our products, we will be responsible for your products! If you have any questions, please feel free to contact our customer service, we will solve any product-related problems for you.

Buying Guide For Best Portable Tankless Water Heater

A portable tankless water heater is a compact and efficient device that heats water on demand without the need for a storage tank. Here are the reasons why you should consider buying one:
Portability: Portable tankless water heaters are designed to be lightweight and easy to transport, making them ideal for camping, RV trips, outdoor activities, or even as a backup for emergencies.

Space-saving: These heaters do not require a bulky storage tank, saving valuable space in your living area or vehicle. They are perfect for small apartments, cabins, or any place where space is limited.

Energy efficiency: Tankless water heaters only heat water when needed, eliminating standby heat loss that occurs in traditional tank-based heaters. This results in energy savings and lower utility bills over time.

Continuous hot water supply: Unlike tank-based heaters that can run out of hot water, portable tankless water heaters provide a continuous supply of hot water as long as there is a water source and power available.

What factors should I consider when buying a portable tankless water heater?

To ensure you make the right choice, consider the following factors when buying a portable tankless water heater:
Flow rate: The flow rate indicates how much hot water the heater can deliver per minute. Determine your hot water needs, such as the number of fixtures or appliances you want to supply, and choose a model with an adequate flow rate to meet those requirements.

Power source: Portable tankless water heaters can be powered by electricity, propane, or natural gas. Consider the availability and convenience of the power source based on your intended use. Electric models are suitable for areas with reliable electricity, while propane or gas models are more versatile for outdoor or off-grid use.

Size and weight: Since portability is a key feature, consider the size and weight of the unit. Look for compact and lightweight models that are easy to carry and store, especially if you plan to use the heater for camping or other mobile applications.

Temperature control and safety features: Check for temperature control options to adjust the water temperature according to your preferences. Safety features like automatic shut-off, flame failure protection, and freeze protection are essential for peace of mind and preventing accidents.

FAQ

1. What are the advantages of a portable tankless water heater?

A portable tankless water heater offers several benefits compared to traditional water heaters with storage tanks. Here are the advantages:
Space-saving: As the name suggests, tankless water heaters do not require a storage tank, making them much more compact and space-efficient. This is especially beneficial for camping, RVs, or any situation where space is limited.

Energy efficiency: Tankless water heaters only heat water on-demand, eliminating the need to constantly keep a large amount of water hot. This results in higher energy efficiency and lower utility bills compared to tank-based heaters.

Continuous hot water supply: Unlike tank-based heaters that can run out of hot water after the tank is emptied, portable tankless water heaters provide a continuous supply of hot water. This is particularly useful for camping or outdoor activities where a reliable hot water source is necessary.

2. What factors should I consider when choosing a portable tankless water heater?

To select the best portable tankless water heater for your needs, consider the following factors:
Flow rate: The flow rate indicates the amount of hot water the heater can deliver per minute. Determine your hot water needs and choose a model with a flow rate that can adequately meet those requirements. Keep in mind that different appliances or fixtures may have different flow rate demands.

Power source: Portable tankless water heaters can be powered by electricity, propane, or natural gas. Consider the availability and convenience of the power source based on your camping or outdoor activities. For example, if electricity is readily accessible, an electric tankless water heater may be a suitable choice.

Size and weight: Since portability is a key factor, consider the size and weight of the unit. A compact and lightweight tankless water heater will be easier to transport and store during camping trips or outdoor adventures.

3. Can you recommend any specific portable tankless water heater models?

While the best choice may vary depending on individual needs, here are three popular portable tankless water heater models worth considering:
Eccotemp L10: The Eccotemp L10 is a propane-powered tankless water heater that is highly regarded for its portability and performance. It provides a maximum flow rate of 2.6 gallons per minute, making it suitable for outdoor showers, washing dishes, or other hot water needs during camping or RV trips.

Camplux 5L: The Camplux 5L is a compact and lightweight propane tankless water heater designed for outdoor use. It offers a maximum flow rate of 1.32 gallons per minute and features an oxygen depletion safety shut-off system. The Camplux 5L is easy to set up and provides hot water on-demand for camping, hunting, or off-grid activities.

Rheem RTEX-13: The Rheem RTEX-13 is an electric tankless water heater known for its efficiency and reliability. With a maximum flow rate of 3.17 gallons per minute, it can deliver hot water to multiple fixtures simultaneously. The compact size and easy installation make it suitable for both indoor and outdoor applications.

4. Are there any installation considerations for portable tankless water heaters?

Installing a portable tankless water heater requires some considerations. Here are a few important points to keep in mind:
Ventilation: Some propane or natural gas-powered tankless water heaters require proper ventilation to ensure the safe release of combustion byproducts. Follow the manufacturer’s instructions regarding ventilation requirements to prevent any potential hazards.

Water source: Ensure that you have a suitable water source for the tankless water heater. It should have a sufficient flow

Conclusion

A portable tankless water heater is a smart investment for anyone looking to enjoy the benefits of hot water without the hassle and expense of traditional water heaters. By providing on-demand hot water whenever you need it, these innovative appliances can help you save money on your energy bills while also reducing your carbon footprint.

Additionally, their compact and lightweight design makes them easy to install and transport, making them perfect for use in RVs, cabins, and other small spaces. If you’re ready to experience the convenience and cost savings of a portable tankless water heater, don’t hesitate to explore your options today!

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