Best Outdoor Water Heaters of 2026

Harry Stack Avatar
Harry Stack
Last Updated: Jan 24, 2026

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Outdoor water heaters are a great option for those who need hot water in their outdoor living spaces. These heaters come in a variety of sizes and styles to fit any outdoor setting, from small patios to large commercial properties. They can be powered by natural gas, propane, or electricity, and are designed to withstand the elements. Outdoor water heaters are perfect for outdoor kitchens, hot tubs, and outdoor showers, providing hot water on demand for a comfortable, enjoyable experience. With their efficient performance and durable construction, outdoor water heaters are a smart investment for any outdoor living space.

At a Glance: Our Top Picks

forimo Tankless Propane Outdoor Water Heater 4.74GPM Cover #TOP 1
forimo Tankless Propane Outdoor Water Heater 4.74GPM
ftb score rating icon 9.9
Portable Tankless Water Heater with Energy Saving Technology Cover #TOP 2
Portable Tankless Water Heater with Energy Saving Technology
ftb score rating icon 9.8
RUINOPAR Portable Water Heater Propane Tankless Cover #TOP 3
RUINOPAR Portable Water Heater Propane Tankless
ftb score rating icon 9.6

Top 10 Outdoor Water Heaters

#TOP 1

forimo Tankless Propane Outdoor Water Heater 4.74GPM

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

The forimo Portable Propane Heater is a compact and efficient water heater designed for outdoor use. It delivers up to 4.74 gallons of hot water per minute with just 3.6 PSI water pressure, making it perfect for camping or RV trips. Safety is a priority with features like flame failure detection, anti-freezing, and overheating protection, so you can use it worry-free. Its advanced combustion technology reduces gas use and operating noise, while the lightweight design and digital display add convenience. Plus, it runs on propane and uses two D-cell batteries, allowing you to enjoy a warm shower wherever you are.

What We Like
Multiple safety protections
Energy-efficient combustion
High hot water output
Lightweight and portable
Digital display included
#TOP 2

Portable Tankless Water Heater with Energy Saving Technology

Water Heater -020
White
Portable Tankless Water Heater with Energy Saving Technology Cover
Tankless Water Heater Propane 4.21GPM 16L Outdoor Portable GasHot Water Heater Instant Propane Water Heater with Digital Display Multi-Protection for Camping Trips Boat Cabins

This CSA approved tankless water heater is designed with advanced combustion technology to save energy and decrease gas consumption. It has safety features like flame failure, anti-freezing, and over heating protection, and is lightweight and portable for outdoor use. The compact structure saves space and the easy installation process makes it convenient to use. It provides a safe and comfortable hot shower at any time and anywhere, making it perfect for camping, hiking, fishing, beaching, etc.

What We Like
Advanced combustion technology for energy efficiency
Lightweight and portable for outdoor use
Compact structure saves space
Easy installation process
Safety features for family safety
#TOP 3

RUINOPAR Portable Water Heater Propane Tankless

JSN-F01
Bright White
RUINOPAR Portable Water Heater Propane Tankless Cover
Portable Water Heater Propane Tankless - 6L 1.58GPM RV on demand Hot Gas Outdoor Digital Display Water Heater for Camping,Boat,Cabins

The RUINOPAR Propane Tankless Water Heater is a portable and lightweight solution for on-demand hot water wherever you are. With a maximum power output of 42,000btu/hour, you can enjoy instant endless hot water without the need for preheating. The low water pressure start-up requires only 2.5 PSI of water pressure, making it ideal for various outdoor activities. The fully adjustable heat and water flow allow you to customize the temperature and water output to your preference. Safety is a top priority with CSA approved regulator, anti-freezing drain plug, and multiple protection methods including overheating, antifreeze, flame-out, anti-dry, high water pressure, and low water flow protection. The lightweight and compact design make it easy to carry and install, while the automatic ignition and flameout modes ensure energy saving and user safety. With a 2-year quality warranty, the RUINOPAR Propane Tankless Water Heater is a reliable and convenient choice for camping, boating, cabins, and more.

What We Like
On-demand hot water
CSA approved safety
Lightweight and portable
#TOP 4

Amzgachfktch Portable Tankless Water Heater

JSD001-6LW
White
Amzgachfktch Portable Tankless Water Heater Cover
Outdoor Propane Tankless Water Heater - 6L 1.58 GPM Portable Gas Water Heater with Handle & Overheating Protection, Instant Hot Water for RV Cabin Camping Boat Barn

The Amzgachfktch Portable Water Heater is designed for convenience and efficiency. Its ultra-slim design makes it easy to carry and store, perfect for outdoor adventures. You can enjoy endless hot water instantly, as it heats water on demand without any preheating needed. With a flow rate of 1.58 gallons per minute, you’ll have hot water ready whenever you need it. Safety is also a priority, featuring six protective mechanisms to prevent overheating and ensure reliable performance, giving you peace of mind while using it in various settings like camping or at home.

What We Like
Compact and portable design
Instant hot water availability
Multiple safety protections
Easy installation
#TOP 5

Portable Tankless Water Heater by GASLAND Outdoors

BE158S
Silver
1.58 GPM
Portable Tankless Water Heater by GASLAND Outdoors Cover
GASLAND BE158S Tankless Water Heater Propane – CSA Certified, 41,000 BTU, 1.58 GPM, Digital Display & Multi-Protection Portable Hot Water Heater for Camping, RV, Off-Grid & Outdoor Showers

The Portable Tankless Water Heater by GASLAND Outdoors is a powerful 6L propane water heater that can produce up to 1.58 gallons of hot water per minute, making it perfect for camping, RVing, and other outdoor activities. Equipped with multiple safety features, it is CSA certified and safe to use as per Canadian and US Standard. With LED temperature display, it provides accurate temperature readings. It comes with a 1-year warranty against manufacturing defects and lifetime customer support.

What We Like
Powerful 6L propane water heater that can produce up to 1.58 gallons of hot water per minute
Multiple safety features including over-heating protection, low water flow protection, dry combustion protection, anti-freezing protection, high water pressure protection and flame failure device
CSA certified and safe to use as per Canadian and US Standard
#TOP 6

VANSTON 6L Portable Propane Tankless Water Heater

VAWH-Z6W
White
VANSTON 6L Portable Propane Tankless Water Heater Cover
Tankless Water Heater, VANSTON Propane Water Heater Outdoor, 6L Portable Water Heaters, Instant Hot Water, Overheating Protection, Easy Installation, Lightweight with Handle for RV, Camping

The VANSTON Portable Propane Heater is a lightweight and compact water heater designed for outdoor use, making it ideal for camping and RV trips. Weighing just 9 pounds with a convenient folding handle, it’s easy for you to carry and set up wherever you go. It delivers hot water almost instantly, reaching temperatures up to 167°F, so you can enjoy quick showers or cleanups without waiting. This heater works well even with low water pressure, perfect for remote locations. Plus, it includes multiple safety features like overheating and freeze protection to keep you safe and ensure reliable performance during your adventures.

What We Like
Lightweight and compact design
Fast hot water delivery
Works with low water pressure
Multiple safety protections
#TOP 7

Camplux Tankless Water Heater, Portable Propane Outdoor Camping Water Heater

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

The Camplux Tankless Water Heater is a portable and lightweight design that is perfect for outdoor camping. It has a flow rate of 1.32 GPM, with a temperature raise of up to 114.8℉ (46℃). It is versatile and ideal for off-grid and rural areas. This tankless water heater is CSA Approved with 6-in-1 protection, and it comes with a 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 it up takes just 10 minutes. It is important to avoid gas leakage by following the installation instructions and checking for gas leaks before operating. Proper maintenance is necessary to avoid freeze damage.

What We Like
Hot water on-demand
Easy setup and installation
Compact and portable design
Good customer service experience
#TOP 8

RUINOPAR 6L Portable Propane Water Heater

‎JSN-F01
Matte Black
RUINOPAR 6L Portable Propane Water Heater Cover
Portable Water Heater Propane Tankless - 6L 1.58GPM RV on demand Hot Gas Outdoor Digital Display Water Heater for Camping,Boat,Cabins(black)

The RUINOPAR Portable Water Heater offers on-demand hot water with a powerful output of 42,000 BTU/hour, ensuring you have instant access to hot water wherever you go. You won't need to preheat; just turn on the tap, and enjoy your desired temperature. Designed for low water pressure, it activates at just 2.5 PSI, providing 1.58 gallons per minute. Safety is paramount with this unit, featuring a CSA-approved regulator and multiple protection measures to prevent overheating and ensure safe operation. Its lightweight design makes it easy to carry, making it ideal for camping trips or outdoor activities.

What We Like
Instant hot water supply
Multiple safety protections
Lightweight and portable
Low water pressure startup
#TOP 9

forimo Tankless Propane Water Heater 5.26GPM

Water Heater-20L-HS
Black
forimo Tankless Propane Water Heater 5.26GPM Cover
Tankless Propane Water Heater - 5.26GPM 20L, Outdoor Portable Gas Instant Hot Water Heater with Digital Display and Multi-Protection for Camping Trips, Boat Cabins

The forimo Portable Propane Heater is a compact and efficient solution for instant hot water outdoors. It features multiple safety protections like flame failure and anti-freezing devices, keeping you safe during use. With a low water pressure requirement, it delivers up to 5.26 gallons of hot water per minute, perfect for quick showers or washing tasks. Its advanced combustion technology reduces gas use and noise, so you save money and enjoy a quieter experience. Lightweight and portable, it runs on D-cell batteries and comes with all necessary accessories, making it easy to set up and use wherever you go.

What We Like
Multiple safety protections
Low water pressure requirement
Energy-saving combustion
Lightweight and portable
Complete accessory kit
#TOP 10

Rinnai V53DeP Tankless Hot Water Heater

V53DeP
5.3 GPM
Rinnai V53DeP Tankless Hot Water Heater Cover
Rinnai V53DeP Propane Tankless Water Heater, 5.3 GPM, Outdoor Installation

Rinnai Tankless Water Heater is a compact, durable, and easy-to-install device that provides endless hot water flow throughout the house. Its space-saving design conserves energy as it heats only when necessary. With a high-performance of up to 5.3 GPM hot water flow rate, you can enjoy a powerful, constant stream of hot water. The enhanced scale detection feature lessens the possibility of serious, long-term damage to the unit, ensuring its longevity. It is recommended to have professional installation. Rinnai offers a 10-, 5-, and 1-year residential factory warranty for heat exchanger, labor, and parts, respectively.

What We Like
Easy to install
5.3 GPM flow rate
Suitable for outdoor installation
Energy-efficient
Cost-effective
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Can I put my water heater outside?

The Short Answer: Absolutely. Not only is it possible to put a water heater outside, but specific models are specifically designed to make it easy for homeowners to do just that.

2. How long do outdoor tankless water heaters last?

Gas-burning tankless water heaters should operate for 20 years or more, two or three times longer than tank-type heaters. Tankless electric units have shorter life spans, on the order of 7 to 10 years.

3. Do outdoor tankless water heaters freeze?

Most indoor and outdoor tankless water heaters have built-in freeze protection against temporary winter temperatures ranging from -5 degrees Fahrenheit to -22 degrees Fahrenheit. This protection cannot withstand long term below freezing temperatures.

Editor's Notes

During our outdoor water heater research, we found 24 outdoor water heater products and shortlisted 10 quality products. We collected and analyzed 47,341 customer reviews through our big data system to write the outdoor water heaters list. We found that most customers choose outdoor water heaters with an average price of $143.06.

The outdoor water heaters are available for purchase. We have researched hundreds of brands and picked the top brands of outdoor water heaters, including forimo, RUINOPAR, Amzgachfktch, GASLAND, VANSTON. The seller of top 1 product has received honest feedback from 141 consumers with an average rating of 4.4.

Written by
Harry Stack Avatar

Harry Stack owns a small hardware store, his career landed him a depth of knowledge in categories such as tools, equipment, machinery and hardware. In his spare time, he usually repairs furniture, safes and appliances, and he knows how to make simple repairs to plumbing or electrical fixtures. His hobbies also include woodworking and fishing.