10 Best gpm tankless water heater in Canada

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Last Updated - 2026/04/05

Best Choice

01
FOGATTI

FOGATTI RV Tankless Water Heater, InstaShower 8 Plus, Gen 2, with 15 x 15 inches Black Door and Remote Controller, DC 12V, Best High Altitude Performance, Ideal for RVers' Everyday Use

15% Off

9.1 Simple to use

8.9 Easy installation

8.0 worth the money
Main highlights

【Unprecedented experience】The high altitude suitability mode allows the machine to run smoothly even when driving the caravan to the high Denver plateau at 9,800 feet. Staged combustion technology, which controls the amount of flame in summer, prevents the water from getting too hot and saves the limited propane gas available for caravan travel.
【Save money and trouble】Fogatti has always thought of you, with a pressure relief valve built into the product, so you don't have to buy and install it separately. And it also comes with a 15 x 15 inches door and an intelligent remote controller up to 2 meters long.
【Safety and reliability】The product is CSA certified and has multiple protection features such as a built-in forced exhaust fan on top, stable combustion, automatic gas shut-off for accidental flame failure and anti-freeze.
【No waiting】RV tankless water heaters are taking off. Tankless water heaters are better than tanked water heaters for continuous showering of multiple people. There is no need to waste 20-30 minutes waiting for hot water in the middle of the shower, so you can enjoy hot water at all times. It uses propane for heating, so there is no need to worry about running out of power in your caravan.
【Incessant hot water】With 55,000 BTU of power, it can produce a maximum of 2.9 GPM of hot water. Some tank heaters can only store up to 6-10 gallons of hot water and run out of hot water in 5-8 minutes, whereas our hot water supply lasts over 40 minutes.
【All RV water heaters can be replaced】The Fogatti RV water heater have a wide range of applications. The opening is 13 x 13 inches and the door is 15 x 15 inches. It can replace Suburban and Atwood's 6 gallons tank water heaters, as well as Girard and Furrion's tankless water heaters. If you previously used a 10 gallons tank water heater, it would need to be retrofitted with an 18 x 18 inches door.
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9.9

Exceptional

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02
thermomate

ThermoMate 113,000 BTU Natural Gas Tankless Water Heater, Up to 5 GPM, High Efficiency Instant On-Demand Hot Water for Whole House Use, Indoor Residential Water Heater with Multi-Point Heating
Main highlights

[Smart Diagnostic Display] - Equipped with a 3.5-inch LED touchscreen, it allows you to effortlessly adjust and monitor output water temperature（90°F to 140°F）while providing real-time tracking of water flow, fan operation, and flame status. Advanced error code technology enables rapid diagnosis of water heater malfunctions. The UL-certified 120V/5-foot power cord ensures continuous power supply for real-time monitoring systems.
[Safety & Reliable] - The gas tankless water heater comes standard with a range of safety features including boil-dry burning protection, Freeze protection, Flame out protection, Overheating Protection, Over temperature protection, Timeout protection, Pipe blockage protection, High-Temperature Lock Protection, Excessive Air Pressure Protection.
[Max 5 GPM & 113,000 BTU] - The ThermoMate instant hot water heater can supply two showers simultaneously, each delivering 105°F water at a flow rate of 2 GPM, based on an inlet water temperature of 65°F. No waiting time, no cold water shocks, perfect for busy households. Adopting advanced water flow sensor, the built-in chip can adjust the heating power 20,000 times per second, ensuring that the hot water within ±1℉ fluctuations for a comfortable shower experience.
[Energy Efficient & Save Money] - The heat exchanger is constructed from high-quality oxygen-free copper, providing superior thermal conductivity and corrosion resistance compared to stainless steel. It achieves a thermal efficiency of 98% (vs. 80% for stainless steel models) and boasts a uniform energy factor (UEF) of 0.81. This design reduces energy waste, lowering annual operating costs by approximately 30% versus traditional systems.
[Easy to Install & Save space] - The whole house tankless water heater features standard 3/4" NPT water inlet/outlet connectors, a 1/2" NPT gas inlet, a 3" OD vent, and a UL-approved 120V plug, ensuring compatibility with most households. With its compact dimensions of 21"H x 13"W x 7"D, the on-demand water heater requires less than one-third of the space occupied by traditional tank models, freeing up valuable room in your home.
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9.8

Exceptional

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03
DWALE

Natural Gas Tankless Water Heater, 4.74 GPM 18L Indoor, 123000 BTU Constant Water Heater, Instant Hot Natural Gas Water Heater, Constant Temperature with Multi-Protection
Main highlights

【Versatile & Space-Saving】– This compact tankless water heater saves over 50% of space compared to traditional tank models, making it a perfect choice for homes, small cabins, and remote apartments. Note: In cold weather, drain residual water by opening the pressure relief valve if the unit will not be used for an extended period.
【Premium Quality & Durability】– Crafted with a stainless steel body for superior temperature and corrosion resistance, this tankless water heater is built to last. The oxygen-free copper heat exchanger ensures minimal heat loss and an extended service life. The LED smart digital display allows for easy temperature adjustments between 30°C (86°F) and 75°C (167°F), giving you precise control over your hot water needs.
【Precision Temperature Control & Quiet Operation】– Equipped with an advanced Computer Control Center and a fully enclosed reinforced combustion chamber, this tankless water heater delivers ±1°C precision temperature control for a consistently comfortable shower. The cutting-edge combustion technology optimizes energy efficiency while significantly reducing operational noise, ensuring powerful performance without disturbance, ideal for modern homes seeking both comfort and quiet.
【Natural Gas Water Heater】– This natural gas tankless water heater features steady temperature control and multiple safety protections, including a flame failure device, overpressure protection, and overheating protection. It operates with just 0.2 Mpa of water pressure, delivering up to 4.74 gallons of hot water per minute. This unit is designed specifically for use with natural gas.
【Efficient & Energy-Saving】– With a high-performance output of 123,000 BTU per hour, this natural gas water heater provides on-demand hot water for 2–3 points of use simultaneously. The advanced combustion technology optimizes energy efficiency and reduces operational noise for a more efficient and quieter experience.
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9.6

Exceptional

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Value for Money

04
CAMPLUX ENJOY OUTDOOR LIFE

Camplux 5L Portable Propane Gas Tankless Water Heater, 1.32 GPM Tankless Water Heater with 1.2 GPM Water Pump, Black

10% Off

8.0 Easy installation

8.0 Simple to use

8.0 worth the money
Main highlights

Safety Assurance for Outdoor Showers: Approved for US & Canada markets. Equipped with flame failure, anti-freezing, over-heating, and oxygen depletion safety shut-off protections. Ensures wonderful and safe outdoor showers
Instant Hot Water Supply: Wide water temperature range, 8℃-46℃ (46.4℉-114.8℉). Outputs 1.32 gallons per minute of hot water, providing instant on-demand hot water
Instant Activation & Seamless Compatibility: Lowest water pressure start up just need 3.0 PSI. Camplux 12V pump pack kits with all essentials included. Water pump has 2 power supply options, use the cigarette lighter cable or the alligator clip cable for charging
Energy-Efficient Design for Cost Savings: Utilizes high-efficiency combustion technology to reduce gas consumption and burning noise. Incorporates 11.5% energy-saving technology for greater energy and cost savings
Compact & Lightweight Design: The portable water heater with a folding handle for easy outdoor setup. Ideal for off-grid living, road trips, and camping adventures
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9.5

Excellent

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05
thermomate

ThermoMate 113,000 BTU Natural Gas Tankless Water Heater, Up to 5 GPM, High Efficiency Instant On-Demand Hot Water for Whole House Use, Indoor Residential Water Heater with Multi-Point Heating
Main highlights

[Smart Diagnostic Display] - Equipped with a 3.5-inch LED touchscreen, it allows you to effortlessly adjust and monitor output water temperature（90°F to 140°F）while providing real-time tracking of water flow, fan operation, and flame status. Advanced error code technology enables rapid diagnosis of water heater malfunctions. The UL-certified 120V/5-foot power cord ensures continuous power supply for real-time monitoring systems.
[Safety & Reliable] - The gas tankless water heater comes standard with a range of safety features including boil-dry burning protection, Freeze protection, Flame out protection, Overheating Protection, Over temperature protection, Timeout protection, Pipe blockage protection, High-Temperature Lock Protection, Excessive Air Pressure Protection.
[Max 5 GPM & 113,000 BTU] - The ThermoMate instant hot water heater can supply two showers simultaneously, each delivering 105°F water at a flow rate of 2 GPM, based on an inlet water temperature of 65°F. No waiting time, no cold water shocks, perfect for busy households. Adopting advanced water flow sensor, the built-in chip can adjust the heating power 20,000 times per second, ensuring that the hot water within ±1℉ fluctuations for a comfortable shower experience.
[Energy Efficient & Save Money] - The heat exchanger is constructed from high-quality oxygen-free copper, providing superior thermal conductivity and corrosion resistance compared to stainless steel. It achieves a thermal efficiency of 98% (vs. 80% for stainless steel models) and boasts a uniform energy factor (UEF) of 0.81. This design reduces energy waste, lowering annual operating costs by approximately 30% versus traditional systems.
[Easy to Install & Save space] - The whole house tankless water heater features standard 3/4" NPT water inlet/outlet connectors, a 1/2" NPT gas inlet, a 3" OD vent, and a UL-approved 120V plug, ensuring compatibility with most households. With its compact dimensions of 21"H x 13"W x 7"D, the on-demand water heater requires less than one-third of the space occupied by traditional tank models, freeing up valuable room in your home.
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9.4

Excellent

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06
Wadoy

3000W Tankless Water Heater, 110V Portable Electric Water Heater with Digital Display & Overheat Protection, Instant Water Heater Under Sink, On Demand Water Heater for Kitchen Bathroom RV
Main highlights

𝐔𝐋𝐓𝐑𝐀-𝐂𝐎𝐌𝐏𝐀𝐂𝐓 𝐃𝐄𝐒𝐈𝐆𝐍: This compact instant hot water heater features a robust ABS casing and solid brass inlet/outlet fittings, ensuring durability and excellent corrosion resistance. LED display showing real-time water temperature. Slim, elegant design fits perfectly under sinks. Operates on 110V plug-in power. Note: Ideal for hand washing/sink use; the portable water heater not suitable for showering (requires ≥ 1.8 GPM)
𝐎𝐔𝐓𝐒𝐓𝐀𝐍𝐃𝐈𝐍𝐆 𝐂𝐔𝐒𝐓𝐎𝐌𝐄𝐑 𝐒𝐄𝐑𝐕𝐈𝐂𝐄: We provide prompt and friendly customer support to assist you with any questions regarding this compact water heater. Should you encounter any issues while using your tankless water heater, feel free to contact us at any time. We will respond quickly and provide you with a solution
𝐌𝐔𝐋𝐓𝐈-𝐋𝐀𝐘𝐄𝐑𝐄𝐃 𝐒𝐄𝐂𝐔𝐑𝐈𝐓𝐘 𝐏𝐑𝐎𝐓𝐄𝐂𝐓𝐈𝐎𝐍: Electric tankless water heaters achieve up to 98% thermal efficiency, delivering significant energy savings. Equipped with multiple safety protections, including IPX4 water resistance, leakage protection, dry-burn protection, water/electricity isolation, and automatic overheat shutdown. Designed to ensure safe operation in diverse indoor environments
𝐈𝐍𝐈𝐍𝐒𝐓𝐀𝐍𝐓 & 𝐏𝐎𝐖𝐄𝐑𝐅𝐔𝐋 𝐇𝐎𝐓 𝐖𝐀𝐓𝐄𝐑: The 3000W electric water heater delivers instant, continuous hot water with a temperature rise up to 122° F at 0.5 GPM. Can be adjusted directly via the faucet or flow control valve, large water flow and low temperature, small water flow and high temperature. The tankless electric water heater can set Fahrenheit or Celsius degrees by holding a power button for 6 seconds
𝐄𝐀𝐒𝐘 𝐕𝐄𝐑𝐓𝐈𝐂𝐀𝐋 𝐈𝐍𝐒𝐓𝐀𝐋𝐋𝐀𝐓𝐈𝐎𝐍: The on demand water heater features a compact design, making it ideal for kitchens, apartments, RVs, and camping. Includes English instructions, mounting screws, and a 1/2-inch NPT standard connection. Water heaters require dedicated wiring for safe operation, use ≥ 2.5 mm² wire and connected to trip switches of over 32A for use. Important: Must be installed vertically to prevent E2 fault
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9.3

Excellent

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07
VEVOR

VEVOR Portable Propane Water Heater, 5L Tankless Outdoor Water Heater, 34000 BTU 1.32 GPM, with Accessory Set + Regulator for RV Camping Trips Cabins Barns

27% Off
Main highlights

Real-Time Temperature Display: Maximum water temperature of 131℉, with a minimum temperature rise of 7K, and a large 1.32GPM/5L capacity. Real-time water temperature display allows clear monitoring and precise temperature control, ensuring a comfortable shower experience whether it's a hot summer day or a cold winter night
Instant Hot Water: 34000 BTU/HR high power, the camping hot water heater with a wide water pressure range of 3.63-110 psi and a minimum starting water pressure of only 3.63 psi. With a flow rate range of 0.53-1.32 GPM, say goodbye to long waits and enjoy hot showers anytime, anywhere. Perfect for outdoor showering fun
Easy to carry: Equipped with a handle design on the top, propane combustion heating allows you to enjoy hot showers anytime, anywhere. Perfect for various outdoor scenarios, making your outdoor life more convenient and comfortable
Dual Cold/Hot Modes: Our portable tankless water heater can switch between winter and summer modes with one button. Suitable for all seasons, whether you're camping outdoors or using it at home, meeting your different needs and making hot showers easily accessible
6-in-1 Protection: Anti-freeze protection, overheat protection, low water flow protection, dry burn protection, high water pressure protection, and flame failure device + safety tilt switch. Six layers of safety protection ensure the safety of you and your family
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9.2

Excellent

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08
VEVOR

VEVOR Portable Propane Water Heater, 5L Tankless Outdoor Water Heater, 34000 BTU 1.32 GPM, with Accessory Set + Regulator for RV Camping Trips Cabins Barns
Main highlights

Real-Time Temperature Display: Maximum water temperature of 131℉, with a minimum temperature rise of 7K, and a large 1.32GPM/5L capacity. Real-time water temperature display allows clear monitoring and precise temperature control, ensuring a comfortable shower experience whether it's a hot summer day or a cold winter night
Instant Hot Water: 34000 BTU/HR high power, the camping hot water heater with a wide water pressure range of 3.63-110 psi and a minimum starting water pressure of only 3.63 psi. With a flow rate range of 0.53-1.32 GPM, say goodbye to long waits and enjoy hot showers anytime, anywhere. Perfect for outdoor showering fun
Easy to carry: Equipped with a handle design on the top, propane combustion heating allows you to enjoy hot showers anytime, anywhere. Perfect for various outdoor scenarios, making your outdoor life more convenient and comfortable
Dual Cold/Hot Modes: Our portable tankless water heater can switch between winter and summer modes with one button. Suitable for all seasons, whether you're camping outdoors or using it at home, meeting your different needs and making hot showers easily accessible
6-in-1 Protection: Anti-freeze protection, overheat protection, low water flow protection, dry burn protection, high water pressure protection, and flame failure device + safety tilt switch. Six layers of safety protection ensure the safety of you and your family
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9.1

Excellent

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09
DWALE

Propane Tankless Water Heater, 4.74 GPM 18L Indoor, 123000 BTU Constant Water Heater, Instant Hot Propane Gas Water Heater, Constant Temperature with Multi-Protection
Main highlights

【Versatile & Space-Saving】– With a compact design that saves over 50% more space than traditional tank-style heaters, this propane water heater is ideal for homes, cabins, and small apartments. Note: In freezing conditions, if the unit will not be used for an extended period, drain residual water by opening the pressure relief valve to prevent damage.
【Tankless Water Heater】– This propane tankless water heater ensures stable temperature control and is equipped with multiple safety features, including a flame failure device, overpressure protection, and overheat protection. It activates with as little as 0.2 Mpa of water pressure and delivers up to 4.74 gallons of hot water per minute. This tankless water heater is designed exclusively for use with propane (LPG).
【Premium Quality & Durability】– Built with a stainless steel body for superior temperature and corrosion resistance, this propane water heater is engineered for long-lasting performance. The oxygen-free copper heat exchanger minimizes heat loss and extends the unit's lifespan. An LED smart digital display allows for easy temperature adjustments between 30°C (86°F) and 75°C (167°F), giving you precise control over your hot water.
【Precision Temperature Control & Quiet Operation】– Equipped with an advanced Computer Control Center and a fully enclosed reinforced combustion chamber, this indoor tankless water heater delivers ±1°C precision temperature control for a consistently comfortable shower. The cutting-edge combustion technology optimizes energy efficiency while significantly reducing operational noise, ensuring powerful performance without disturbance, ideal for modern homes seeking both comfort and quiet.
【Efficient & Energy-Saving】– With a powerful output of 123,000 BTU per hour, this 4.74 GPM instant propane water heater can supply hot water to 2–3 outlets simultaneously. Its advanced combustion technology reduces gas consumption and lowers operational noise for a more efficient and quieter experience.
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9.0

Excellent

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10
CAMPLUX ENJOY OUTDOOR LIFE

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

20% Off

9.3 Easy installation

9.1 Simple to use

8.7 worth the money
Main highlights

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.
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.
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.
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.
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.
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.
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8.9

Very Good

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