The best outdoor tankless water heaters are a great way to keep energetic youngsters busy and having fun at the same time. Keeping toddlers entertained and occupied is a constant struggle for parents. With multiple options and prices, it can be tricky to find the best outdoor tankless water heaters at the right price.
So, we have researched and reviewed the best outdoor tankless water heaters to help find the perfect fit for your busy little one. In identifying the best outdoor tankless water heaters for your toddler, we have spent over 43 hours to personally research and rank the best. We evaluated each toy and assessed them based on value, engagement and quality.
Any of the products from our top 10 best outdoor tankless water heaters list has been highly recommended by parents and loved by little ones. Your toddler will get hours of fun from any of these great toys. Although, the 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 is a great choice and our top pick. With a stunning design, great value for money and very stimulating, it is an ideal present for active toddlers.
Secondly, the Rinnai V65EN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Outdoor Installation is also great choice and highly recommended. Parents loved the interaction with their child and found their toddler very occupied with the toy. Either of these two products will be a great hit with your toddler.
Browse through the top 10 best outdoor tankless water heaters to find the best fit for your busy little one.
Best outdoor tankless water heaters
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Product Title
Score
Rheem Prestige Condensing Tankless Outdoor Natural Gas Water Heater 9.5 GPM – RTGH-95XLN-2
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9.5
Rinnai RU199eN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Outdoor Installation
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9.1
Natural Gas Tankless Water Heater, FOGATTI Outdoor 5.1 GPM, 120,000 BTU White Instant Hot Water Heater, InstaGas Classic 120S Series
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8.2
Rinnai RU180eN Condensing Tankless Hot Water Heater, 10 GPM, Natural Gas, Outdoor Installation
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7.7
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
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7.1
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Product Title
9.9
Rinnai V53DeN Tankless Hot Water Heater, 5.3 GPM, Natural Gas, Outdoor Installation
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9.5
Rheem Prestige Condensing Tankless Outdoor Natural Gas Water Heater 9.5 GPM – RTGH-95XLN-2
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9.1
Rinnai RU199eN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Outdoor Installation
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8.7
Rheem Mid-Efficiency 8.4GPM Outdoor Natural Gas Tankless Water Heater
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8.4
Rinnai V65EN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Outdoor Installation
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8.2
Natural Gas Tankless Water Heater, FOGATTI Outdoor 5.1 GPM, 120,000 BTU White Instant Hot Water Heater, InstaGas Classic 120S Series
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7.7
Rinnai RU180eN Condensing Tankless Hot Water Heater, 10 GPM, Natural Gas, Outdoor Installation
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7.4
Rinnai V53DeP Tankless Hot Water Heater, 5.3 GPM, Propane, Outdoor Installation
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7.1
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
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6.2
Rheem RTG-70XLP-1 Tankless Water Heater, Grey, Grey
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Rinnai V53DeN Tankless Hot Water Heater, 5.3 GPM, Natural Gas, Outdoor Installation
Rinnai V53DeN Tankless Hot Water Heater, 5.3 GPM, Natural Gas, Outdoor Installation
$700.86 in stock
4 new from $700.86
3 used from $564.00
3 used from $564.00
Amazon.com
as of January 18, 2026 6:57 am
Features
- Unlimited Hot Water For Your Family: Enjoy endless hot water with our Rinnai tankless hot water heater, providing a flow rate of 5.3 GPM to serve up to 4 appliances; Say goodbye to cold showers and hello to convenience with this efficient unit
- Energy Efficiency At Its Best: This compact gas tankless water heater conserves energy by heating water only when needed, making it an earth-friendly choice for energy-conscious homeowners; Reduce utility bills and enjoy hot water as needed
- Peace Of Mind With Long-Lasting Performance: The Rinnai tankless hot water heater offers a 10-year warranty on the heat exchanger, ensuring durability; Enjoy uninterrupted hot water flow without worrying about frequent repairs
- Compact And Space-Saving Design: Our outdoor tankless hot water heater is designed for modern homes, ideal for families and new homeowners; Its small footprint allows easy installation in tight spaces without sacrificing performance
- User-Friendly And Easy Installation: We recommend professional installation for the best results, ensuring safe operation of this on demand water heater; Visit our Rinnai PRO page to find a qualified technician near you
Rheem Prestige Condensing Tankless Outdoor Natural Gas Water Heater 9.5 GPM – RTGH-95XLN-2
Rheem Prestige Condensing Tankless Outdoor Natural Gas Water Heater 9.5 GPM - RTGH-95XLN-2
out of stock
Amazon.com
as of January 18, 2026 6:57 am
Features
- Energy Efficient Continuous Hot Water for the Whole Home
- Low operating cost - High energy efficiency and water savings setting
- Space Savings - Compact, space-saving design. Perfect for a tank replacement.
- Water & Gas Leak Detection will shut down unit and provide an error code
- For use outdoors with freeze protection up to -30 degrees
Rinnai RU199eN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Outdoor Installation
Rinnai RU199eN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Outdoor Installation
out of stock
Amazon.com
as of January 18, 2026 6:57 am
Features
- Endless Hot Water: Our tankless hot water heaters offer unlimited whole-home hot water flow and come equipped with Circ-Logic for pairing with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
- Energy and Space Efficient: The tankless design of this small hot water heater saves on space and conserves energy as it heats only when necessary
- Optimal Water Pressure: With a hot water flow rate of up to 11 GPM, this tankless water heater provides a powerful, constant stream that can accommodate up to 7 appliances at once
- Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your water heater; We do not recommend installing a water heater without a technician
- Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively; Wifi monitoring available with Controlr module (not included)
Rheem Mid-Efficiency 8.4GPM Outdoor Natural Gas Tankless Water Heater
Rheem Mid-Efficiency 8.4GPM Outdoor Natural Gas Tankless Water Heater
out of stock
Amazon.com
as of January 18, 2026 6:57 am
Features
- Exclusive Water Savings technology conserving up to 1, 100 gallons per year
- 157, 000 BTU (gas consumed per hour)
- Exclusive Hot Start Programming minimizes cold water burst by staying in ready-fire state
- Recirculation pump ready kit ready
- For use outdoors with freeze protection up to -30 degrees
Rinnai V65EN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Outdoor Installation
Rinnai V65EN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Outdoor Installation
$757.49 in stock
Amazon.com
as of January 18, 2026 6:57 am
Features
- Endless Hot Water: Our tankless hot water heaters let you enjoy unlimited hot water flow throughout the house with a compact and durable design that fits your home and lifestyle
- Energy and Space Efficient Tankless Gas Water Heater: This small hot water heater conserves energy, only heating when necessary; Enhanced scale detection lessens possibility of serious, long-term damage to unit
- Optimal Water Pressure: This tankless water heater offers a high-performance hot water flow rate up to 6.5 GPM for a powerful, constant stream that serves up to 5 appliances at once
- Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater; We do not recommend installing a water heater without a technician
- Guaranteed to Last: 10-, 5-, and 1-year residential factory warranty for heat exchanger, labor, and parts, respectively
Natural Gas Tankless Water Heater, FOGATTI Outdoor 5.1 GPM, 120,000 BTU White Instant Hot Water Heater, InstaGas Classic 120S Series
Natural Gas Tankless Water Heater, FOGATTI Outdoor 5.1 GPM, 120,000 BTU White Instant Hot Water Heater, InstaGas Classic 120S Series
out of stock
Amazon.com
as of January 18, 2026 6:57 am
Features
- Outdoor installation to save space: The product is installed outdoors and does not occupy the living space. The bottom built-in forced DC fan eliminates the influence of external wind. So as to ensure the stability of combustion, achieve safety, energy saving and no pollution.
- Endless water supply without preheating: It can run at approximately 5.1 GPM for 40 minutes, enough to produce almost 200 gallons of hot water. Make a multi-point water supply for the whole house to meet your family's water needs.
- Precise temperature control and stable temperature: The burner can be burnt in sections to meet the water temperature demand in the four seasons. Benefiting from the calculation and control of the heating power 1000/s by the chip, the temperature difference of the water can be precisely controlled within ±2°F.
- Compact design for easy installation: The tankless design is 1/4 the size of a 50 gallon tank water heater, making it easy to install. The highly integrated components also provide greater safety from water pressure surges without the need to install an expansion tank.
- Excellent quality and service: CSA certification in the USA and Canada. Superior safety and durability using the world's most advanced technology. FOGATTI provides 5 years warranty on the heat exchanger and 2 years warranty on other parts.
Rinnai RU180eN Condensing Tankless Hot Water Heater, 10 GPM, Natural Gas, Outdoor Installation
Rinnai RU180eN Condensing Tankless Hot Water Heater, 10 GPM, Natural Gas, Outdoor Installation
out of stock
Amazon.com
as of January 18, 2026 6:57 am
Features
- Endless Hot Water: Our tankless hot water heaters offer unlimited whole-home hot water flow and come equipped with Circ-Logic for pairing with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
- Energy and Space Efficient: The tankless design of this small hot water heater saves on space and conserves energy as it heats only when necessary
- Optimal Water Pressure: With a hot water flow rate of up to 10 GPM, this tankless water heater provides a powerful, constant stream that can accommodate up to 6 appliances at once
- Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your water heater; We do not recommend installing a water heater without a technician
- Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively; Wifi monitoring available with Controlr module (not included)
Rinnai V53DeP Tankless Hot Water Heater, 5.3 GPM, Propane, Outdoor Installation
Rinnai V53DeP Tankless Hot Water Heater, 5.3 GPM, Propane, Outdoor Installation
$734.23 in stock
3 new from $734.23
Amazon.com
as of January 18, 2026 6:57 am
Features
- Endless Hot Water For Every Need: Enjoy the convenience of our tankless hot water heater with a 5.3 GPM flow rate, delivering unlimited hot water to multiple appliances for your busy household
- Energy-Efficient Performance: Our propane tankless water heater conserves energy by heating water on demand, ensuring you use energy only when needed while enhancing the unit's lifespan with improved scale detection features
- Optimal Space-Saving Design: The compact design of this outdoor propane water heater allows for installation in tight spaces while providing powerful and consistent hot water flow, perfect for families and individuals alike
- Professional Installation Recommended: Ensure seamless performance and longevity by having a qualified technician install your Rinnai tankless water heater, offering peace of mind and adherence to safety standards
- Reliable Warranty Protection: Backed by a robust warranty, our Rinnai water heater includes a 10-year warranty on the heat exchanger, a 5-year warranty on labor, and a 1-year warranty on parts, confirming our commitment to quality
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
$159.99 out of stock
2 used from $155.19
Free shipping
Amazon.com
as of January 18, 2026 6:57 am
Features
- 【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 68,000btu/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: 24.23x5.9x13.4 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.
- NOTE:When you dismantle the equipment through the winter, summer is coming to install and then use, after the installation is completed, please be sure to leakage test, do not use a lot of force in the process of installing the gas pipe, will lead to gas valve body fracture, resulting in gas leakage, injury and property damage.
Rheem RTG-70XLP-1 Tankless Water Heater, Grey, Grey
Rheem RTG-70XLP-1 Tankless Water Heater, Grey, Grey
$914.75 in stock
2 new from $914.75
1 used from $944.99
1 used from $944.99
Free shipping
Amazon.com
as of January 18, 2026 6:57 am
Features
- Continuous Hot Water – never run out of hot water, even with back-to-back showers
- Tankless Gas Water Heaters are cost saving and energy efficient
- Reduces Energy Consumption - Automatically adjusts the amount of energy required to heat the water you need
- Easy, Convenient Control –Easily adjust water temperature ranging from 85˚F–140˚F
- For use outdoor with freeze protection up to -30 degrees
We hope you found the perfect outdoor tankless water heaters for your busy little toddler. If not, have a look at the Rinnai V53DeP Tankless Hot Water Heater, 5.3 GPM, Propane, Outdoor Installation. It is a great option and well suited to advancing toddlers. We wish your little tot hours of fun with their great outdoor tankless water heaters
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