Looking for the Best Outdoor Tankless Water Heater available to buy right now on Amazon but don’t want to have to do all the research on the pros and cons of the different types of Outdoor Tankless Water Heater?
Pop Expert have put together this list of the top 10 selling Outdoor Tankless Water Heater on Amazon – sorted by overall popularity and positive consumer reviews.
The Pop Expert list of top selling Outdoor Tankless Water Heater is the ideal place to start when you are trying to find the Best Outdoor Tankless Water Heater for your neeeds.
Popular Outdoor Tankless Water Heater on Amazon
Details on the Best Outdoor Tankless Water Heater
Bestseller No. 1
Natural Gas Tankless Water Heater,5.26GPM 20L Outdoor,Instant Hot Natural Gas Water Heater with Fahrenheit Digital Display,Multi-Protection
- 【Tankless Water Heater】– This natural gas tankless water heater features steady temperature control and multiple safety protections, including a flame failure device, anti-freeze protection, and overheating protection. It operates with just 3.6 PSI of water pressure, delivering up to 5.26 gallons of hot water per minute. With a maximum temperature rise of 149°F, this unit is designed exclusively for use with natural gas (LNG).
- 【Premium Quality & Durability】– Crafted with a stainless steel body for superior temperature and corrosion resistance, this natural gas water heater is built to last. The oxygen-free copper water tank ensures minimal heat loss and an extended service life. The LED smart digital display allows for easy temperature adjustments between 95°F and 149°F, giving you precise control over your hot water needs.
- 【Efficient & Energy-Saving】– With a high-performance output of 120,000 BTU per hour, this 5.26 GPM instant natural gas water heater delivers on-demand hot water for 3–4 fixtures at the same time, making it an ideal choice for whole-house use. Advanced combustion technology helps reduce gas consumption and lowers operational noise, offering a more efficient and quieter experience for your home.
- 【Fast & Convenient Outdoor Installation】– With a space-saving design measuring 22.8" x 14.4" x 5.9", this tankless water heater is built for quick and easy outdoor setup. It includes a remote control panel for simple indoor operation and runs smoothly with low water pressure from 3.16-150 PSI. Just plug it into a standard 120V AC outlet for a reliable and hassle-free power connection.
- 【Accurate & Consistent Temperature Control】– Equipped with advanced water servo technology and built-in temperature sensors, this tankless natural gas water heater delivers precise regulation of water flow and gas input, keeping temperature fluctuations within ±1℉. The four-stage combustion system ensures steady, reliable performance year-round—whether you're facing freezing winters or scorching summers.
Bestseller No. 2
Propane Tankless Water Heater Outdoor,5.26GPM 20L Outdoor,Instant Hot Propane Gas Water Heater with Fahrenheit Digital Display,Multi-Protection
- 【Tankless Water Heater】– This propane tankless water heater features steady temperature control and multiple safety protections, including a flame failure device, anti-freeze protection, and overheating protection. It operates with just 3.6 PSI of water pressure, delivering up to 5.26 gallons of hot water per minute. With a maximum temperature rise of 149°F, this unit is designed exclusively for use with propane (LPG).
- 【Premium Quality & Durability】– Crafted with a stainless steel body for superior temperature and corrosion resistance, this propane water heater is built to last. The oxygen-free copper water tank ensures minimal heat loss and an extended service life. The LED smart digital display allows for easy temperature adjustments between 95°F and 149°F, giving you precise control over your hot water needs.
- 【Efficient & Energy-Saving】– With a high-performance output of 120,000 BTU per hour, this 5.26 GPM instant propane water heater delivers on-demand hot water for 3–4 fixtures at the same time, making it an ideal choice for whole-house use. Advanced combustion technology helps reduce gas consumption and lowers operational noise, offering a more efficient and quieter experience for your home.
- 【Fast & Convenient Outdoor Installation】– With a space-saving design measuring 22.8" x 14.4" x 5.9", this tankless water heater is built for quick and easy outdoor setup. It includes a remote control panel for simple indoor operation and runs smoothly with low water pressure from 3.16-150 PSI. Just plug it into a standard 120V AC outlet for a reliable and hassle-free power connection.
- 【Accurate & Consistent Temperature Control】– Equipped with advanced water servo technology and built-in temperature sensors, this tankless propane water heater delivers precise regulation of water flow and gas input, keeping temperature fluctuations within ±1℉. The four-stage combustion system ensures steady, reliable performance year-round—whether you're facing freezing winters or scorching summers.
On Sale!Bestseller No. 3
Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 7.0 GPM, Gray
- Continuous Hot Water & Comfort When Needed – Provides enough hot water for your entire house, even when using multiple applications such as a shower and dishwasher
- Save on Energy Costs – High Efficient Water Heater only runs when needed
- Save Water– Water Saving Setting saves up to 1,100 gallons of water per year
- Hot-start programming keeps the water heater in a ready state, avoiding any cold-water bursts
- Save Space - New smaller size, 19%, and reduced weight by 22% compared to the previous model for easy installation and space savings
$804.00
−$40.20
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Bestseller No. 4
NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU
- One Model, Anywhere: This Rinnai tankless water heater is installable indoors or outdoors thanks to our new Versa Vent and powered by either propane or natural gas thanks to a Smart Sense gas control system; RX-OVC vent cap required for outdoor install
- Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This condensing propane and natural gas tankless water heater from Rinnai is only the size of a small suitcase, but provides up to 11.1 GPM (7 fixtures at once)
- Smart, Efficient Design: This water heater's modern design includes an easy-to-use interface, Quick Flush feature for simplified flushing, as well as a super-high energy efficiency factor of UEF .98; See Controlr module for WiFi control (not included)
- Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to find a qualified technician to install your tankless water heater, and use the Rinnai Central App for help with setup, service & troubleshooting; We do not recommend installing a water heater without a technician
- Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater size for your home; Check our Ground Water Temperature Map to see if this heater is optimal for your region
Bestseller No. 5
Propane Tankless Water Heater Outdoor, 5.2 GPM 130000 BTU On Demand Hot Water Heater with Remote Control, 110V Residential Instant Propane Waterheater
- LOW DEMANDS, HIGH STANDARDS - This propane water heater deliver up to 5.2 GPM of instant hot water, capable of supplying 2-4 water outlets simultaneously. The 0.7 GPM minimum water flow requirement ensures reliable use even in low water pressure areas and high-rise buildings
- WISE WATER SUPPLY CHOISE - A tankless on demand water heater lets you say goodbye to those torturous waiting times. Installed outdoors, they save space and reduce safety risks. Propane water heaters are more energy-efficient than electric heaters, wise money-saving decision
- BUILT FOR ALL-WEATHER - The on demand hot water heater is constructed with a thickened corrosion-resistant body, stainless steel vent, variable frequency fan, and a wind-resistant system, providing windproof, freeze-proof, and IPX5 waterproof protection
- FOUR SEASONS SAME TEMP - This propane tankless water heater is equipped with an advanced thermostat system for precise temperature control (temp fluctuation ±1°F). The seven-segment layered combustion technology ensures consistent water temperature throughout the year
- EFFORTLESS SETUP AND OPERATION - Once installed, just press the power button and turn on the hot water tap to enjoy instant hot water. The included controller (15ft wire) allows you to easily adjust the water temperature from indoors. The water outlet/inlet and gas inlet use standard 3/4” NPT connectors
Newest Outdoor Tankless Water Heater
On Sale!New
GASLAND 30 Inch Electric Cooktop 4 Burners | 2.64GPM 10L Propane Outdoor Water Heater G10
- Ultra Slim 10L Portable Water Heater - product size 13 (L) x 5.9(W) x18.5 (H) inches. The mini design is suitable for carrying on the go.
- 2.64GPM Propane Water Heater - Maximum power output 68,000BTU/Hr, heats up water in seconds that no need to wait
- Maintenance Tips - Designed for portable outdoor use. it is splash-proof and canmanage a little drizzle, however, prolonged exposure to rain/water will damage theinternal components. We recommend using and storing your water heater in a dryplace. For the winter, please drain out the wate by disconnecting the drain plug andstore it in the warm and dry area.
$759.98
−$38.00
More Details
New
GASLAND 3.60 GPM Indoor Tankless Water Heater Propane | 2.64GPM 10L Propane Outdoor Water Heater G10
- Ultra Slim 10L Portable Water Heater - product size 13 (L) x 5.9(W) x18.5 (H) inches. The mini design is suitable for carrying on the go.
- 3.60 GPM Propane Water Heater - Rated at 3.60 GPM at 90,000 BTUs. It features 1/2" NPT incoming and outgoing water connections. Designed for compatibility with most standard size plumbing. 3" stainless steel exhaust pipe is required.
- 2.64GPM Propane Water Heater - Maximum power output 68,000BTU/Hr, heats up water in seconds that no need to wait
- Space Saving Design - GASLAND tankless water heaters take up less space than conventional counterparts. The convenient wall mount design offers additional flexibility to compared to tank water heater. Product dimension: 12.59" W x 19.88" H.
- Maintenance Tips - Designed for portable outdoor use. it is splash-proof and canmanage a little drizzle, however, prolonged exposure to rain/water will damage theinternal components. We recommend using and storing your water heater in a dryplace. For the winter, please drain out the wate by disconnecting the drain plug andstore it in the warm and dry area.
New
GASLAND 2.64 GPM Indoor Propane Gas Tankless Water Heater | 2.64GPM 10L Propane Outdoor Water Heater G10
- Ultra Slim 10L Portable Water Heater - product size 13 (L) x 5.9(W) x18.5 (H) inches. The mini design is suitable for carrying on the go.
- 2.64 GPM Propane Water Heater - Rated at 2.64 GPM at 68,000 BTUs. It features 1/2" NPT incoming and outgoing water connections. Designed for compatibility with most standard size plumbing. 3" stainless steel exhaust pipe is required.
- 2.64GPM Propane Water Heater - Maximum power output 68,000BTU/Hr, heats up water in seconds that no need to wait
- Space Saving Design - GASLAND tankless water heaters take up less space than conventional counterparts. The convenient wall mount design offers additional flexibility to compared to tank water heater. Product dimension: 12.59" W x 19.88" H.
- Maintenance Tips - Designed for portable outdoor use. it is splash-proof and canmanage a little drizzle, however, prolonged exposure to rain/water will damage theinternal components. We recommend using and storing your water heater in a dryplace. For the winter, please drain out the wate by disconnecting the drain plug andstore it in the warm and dry area.
On Sale!New
GASLAND PRO GH3305SF Gas Stovetop with 5 Burners | 2.64GPM 10L Propane Outdoor Water Heater G10
- Ultra Slim 10L Portable Water Heater - product size 13 (L) x 5.9(W) x18.5 (H) inches. The mini design is suitable for carrying on the go.
- 2.64GPM Propane Water Heater - Maximum power output 68,000BTU/Hr, heats up water in seconds that no need to wait
- Maintenance Tips - Designed for portable outdoor use. it is splash-proof and canmanage a little drizzle, however, prolonged exposure to rain/water will damage theinternal components. We recommend using and storing your water heater in a dryplace. For the winter, please drain out the wate by disconnecting the drain plug andstore it in the warm and dry area.
$759.98
−$47.00
More Details
On Sale!New
GASLAND 18,000 BTU Propane Heater | 2.64GPM 10L Propane Outdoor Water Heater G10
- Ultra Slim 10L Portable Water Heater - product size 13 (L) x 5.9(W) x18.5 (H) inches. The mini design is suitable for carrying on the go.
- Easy Maintenance - The surface of the cooktop made by EUROKERA in France which is a global leader of vitro-ceramic glass. The advantage of this glass engineered to resist wear and cooking damage caused by heat, spills, friction and stains . Simply wipe the cooktop with a clean damp cloth and it would look brand new again.
- 2.64GPM Propane Water Heater - Maximum power output 68,000BTU/Hr, heats up water in seconds that no need to wait
- Works with Any Cookwares - This built-in electric stove can be used any type of cookware such as aluminium pans, copper pans, cast iron frying pans and non-magnetic stainless steel pans, vertical heat conduction can effectively heat cook wares with minimal heat loss. Product size is 21.50"(L)×17.13"(W)×3.27"(H) and the cut out size is 20.13"(W)×16.13"(D). Please make sure your cut out size before purchasing.
- Maintenance Tips - Designed for portable outdoor use. it is splash-proof and canmanage a little drizzle, however, prolonged exposure to rain/water will damage theinternal components. We recommend using and storing your water heater in a dryplace. For the winter, please drain out the wate by disconnecting the drain plug andstore it in the warm and dry area.
$649.98
−$32.50
More Details