Best Portable Water Heater to have when participating in outdoor activities
Adam Sandler, Bunrt Smith Sep 22, 2023 12:46 PM
Portable water heaters are a great way to have hot water on the go. They are small, lightweight, and easy to use. However, with so many different types and brands on the market, it can be hard to know which one is the best.
That’s why we’ve done the research for you and compiled a list of the best portable water heaters on the market. We’ve also included a buyer’s guide to help you know what to look for when shopping for a portable water heater.

Our Selection
Last update on 2023-09-22 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API
#1: Camplux 5L Outdoor Portable Water Heater
Product highlights:
- CSA Safety Standard: CSA safety standard approved portable tankless water heater,flame failure device, anti-freezing protection, overheating protection to ensure the family safety. Automatically decrease water pressure between 3.0-110 PSI. The anti-freezing drain plug can discharge the residual water to avoid freezing in cold areas or in case of long time no use. The water heater will shut off automatically when high water temperature protection exceeds 176 °F.
- Lightweight Portable Design: Compact size weighs 10 lbs with portable handle for easy carry. Hang it using the mounting bracket on the top/back of the gas water heater. It only takes you 15 minutes to install the propane water heater.
- Instant Hot Water: Maximum power output 28,000btu/hour, you can get 1.32 gallons instant endless hot water easily wherever you are. No need to preheat before operating the tankless water heater. As soon as you turn on the tap, the water flows with your desired temperature.
- 3.0 PSI Water Pressure Startup: Equipped with a magnetic water flow sensor, the tankless water heater can be widely applied for rural areas, RV's and Boats.The tankless propane water heater lights when water pressure between 3.0-110 PSI, low water pressure is perfect for campings and remote cabins.
#2: Coleman Hot Water on Demand H2Oasis Portable Water Heater
Product highlights:
- Portable camping water heater provides easy access to hot water
- Dispenses hot water up to 125 degrees Fahrenheit in as little as 30 seconds
- Shower head with 6-foot, non-kinking silicone hose facilitates outdoor showering
- High-power submersible electric pump provides reliable, strong water flow
- Includes convenient mesh storage bag and 5-gallon collapsible water carrier
#3: 110V 3000W Portable Mini Instant Electric Hot Water Heater System
Product highlights:
- Specification: Dimensions: 7.87 x 4.13 x 2.55in; Power: 3000W; Rated Frequency: 60HZ; Rated pressure: 0.4-0.6mpa; Temperature: 30-55; Water pipe interface: G 1/2"" interface; Installation wire diameter: 1.5-2.5mm² copper wire. Please verify it's the right size for you before purchase
- Provide Endless Hot Water: Instant Electric Water Heater changes cold water into hot water, which can take advantage of the thermal energy maximally, so you can get steady stream of clean and fresh hot water for daily life
- Premium Material: This Tankless Water Heater adopts stainless steel material, which is durable, easily solves issues such as face washing, bathing, vegetable washing and dishwashing; Freely adjust water temperature by water flow, simple operation
- Wide Application: Compact size and lightweight design, high proactivity and convenient installation, install this tankless hot water heater under your sink to provide hot water right where you need it, widely used at kitchen, rest room, bathroom or any other places
- Practical and Beautiful: Lightweight mini electric water heater with LCD digital temperature display, a perfect combination of inner quality and classical appearance, adds an exquisite and practical furniture for your home
Storage Water Heater
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Pros: Large capacity, independent water system, adequate for a large number of people, and high demand (1 large tank can supply water for the whole house). The heating temperature may reach 80° Celsius (176 degrees Fahrenheit).
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Cons: big and enormous in size; it takes a long time to use and is expensive. High replacement and maintenance expenses.
Tankless Water Heater/Instant Water Heater
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Pros: compact, it is a reasonable choice for tiny spaces. No need to wait too long to use it, more safety for users with many advanced technologies, with a shower available. The main fuel sources of this type include gas and electricity
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Cons: needs to be installed in a space with high water pressure, and a stable power source (if you are in a suburban area where electricity is not stable, you should consider another type). The maximum temperature just only from 45 to 55 degrees Celsius (113-131 degrees Fahrenheit), so it won't work as efficiently on cold days.
Solar water heater
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Pros: Cost suitable for many segments, lengthy heat retention, safe to use, and incredibly environmentally friendly. Suitable for frequent hot water users.
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Cons: Effectiveness will be affected by weather; easily soiled and requires regular cleaning. Expensive installation.
Shell:
The exterior shell of tiny bottles is normally made of high-quality plastic, but the outer shell of big-capacity bottles is made of powder-coated steel. To reduce heat loss, a layer of cushioned PU foam will be placed between the outer shell and the core.
Core:
There are two types of heater cores: diamond glazed (to assist prevent chemical corrosion) and unglazed.
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The standard core will be built of specialty steel plate that will be pressed into two halves and sealed. Cores are often far less expensive, but their longevity is less than that of enamel.
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The enameled cores are increasingly prevalent, and almost all manufacturers use this technique. Although the cost of manufacturing and selling is higher, it provides buyers with a sense of security.
Heating rod:
The heating rod is often composed of steel or copper to guarantee effective heat transfer, insulation, and a long lifespan. Using the resistor's heat-generating mechanism causes the water to heat up more quickly.
Relay:
The major purposes of a relay are temperature regulation and user protection. When the relay is damaged, it will totally turn off the power to the system to prevent harm while in use; if the water temperature has not achieved the requirement, the relay will power the Mayso (heated bar): It is used to function again and it can automatically disconnect when the water temperature is reached.
Insulation:
This is a heat storage tank used to supply hot water systems. Some types, such as the Tankless Water Heater, will lack this component.
Editer's note: There will be changes and optimizations to the structure and components over time
Capacity
Capacity of the container or a suitable model/type of water heater
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15L (4 Gallon) bottle for family with 1-2 people.
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20L (5 Gallon) bottle for family with 2-3 people.
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30L (8 Gallon) bottle for family with 3-4 people.
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The 45L (11 Gallon) bottle is plenty for a family of four to five persons.
The Wattage of the tank:
For low-demand families, you should choose a Storage Water Heater with a capacity of 1500W - 2500W or a Tankless heater. If you consume a lot of electricity, you should pick a capacity of 3000W or higher or convert it to Solar.
Installation space:
Because of the likelihood of heat loss when storing the container and the shower, this is especially necessary for the Storage or Solar. This will also affect the installation cost, so you should think carefully about it.
Warranty
Simple maintenance and installation are suitable for Tankless water heater. Dismantling and repairing is nearly tough to perform rapidly, especially with Solar water heater and storage water heater, and the cost will be exceedingly expensive if something goes wrong. As a result, the company's warranty will be required while making a purchase decision. To minimize mishaps, use reputed organizations with production expertise and knowledgeable technical employees while installation.
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