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5 Best Propane Tankless Water Heaters of 2025

Last Updated - 2025/08/31

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

FOGATTI

FOGATTI Propane Tankless Water Heater, Up to 5.1 GPM, 120,000 BTU Indoor Installation Instant Hot Water Heater, InstaGas Classic 120 Series

FOGATTI

CA$799.00

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Main highlights
- Stable Temperature Control: The built-in chip adjusts heating power 1,000 times per second, maintaining water temperature within ±2°F for a consistently comfortable experience
- Safety & Durability: FOGATTI propane tankless water heater has been CSA certified with advanced safety features, including dry combustion protection, overheat protection, Anti-Freeze protection, flame failure protection, we offer a 2-year coverage for the entire unit and a 5-year coverage for the heat exchanger
- Energy Efficient: Featuring a copper heat exchanger and micro-flame technology with negative pressure design, this unit reduces gas consumption and noise, saving you on energy bills while ensuring quiet operation
- Endless Hot Water: FOGATTI tankless water heater propane delivers a high flow rate of 5.1GPM with 120,000 BTU heating power, providing reliable hot water for 3-4 locations simultaneously
- Easy Installation: With a 3-inch OD and 3/4" NPT, the venting and piping dimensions for FOGATTI gas tankless water heater are compatible with most households. Professional installation is recommended for best performance
- Compact Design: Measuring 22.76” H x 14.57”W x 7.0”D and requires 120V AC, it saves over 50% more space compared to traditional tank heaters. you can install it in most corners of your home
CA$799.00
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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

thermomate

ThermoMate 98,500 BTU Propane Tankless Water Heater, Up to 3.81 GPM, High Efficiency Instant Hot Water for Whole House Use, Residential Indoor on Demand Hot Water Heater, Multiple Points of Use

thermomate

CA$539.99

More Details
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 propane 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.
- [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.
- [3.81 GPM & 98,500 BTU] - The ThermoMate instant hot water heater delivers consistent hot water to 2-3 fixtures simultaneously, allowing you to have unlimited hot water on demand. 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.
CA$539.99
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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Ranein

Ranein Propane Gas Tankless Water Heater with Vent Pipe, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater

Ranein

CA$499.00

More Details
Main highlights
- Warranty: We provide a 2-year warranty for the water heater. If you encounter any issues, please contact us.
- Save Money: The kit already includes the exhaust pipe, so you don't need to spend extra money on purchasing it separately. With an oxygen-free copper water tank, it reduces heat loss and lowers energy consumption. Applied with standard 1/2" NPT water fitting and gas inlet.
- Recommendation: We strongly advise that all installations of the device adhere to local building and plumbing regulations at the installation location, and should be carried out by licensed professionals. This product is not recommended for use in areas over 2,000 feet
- Performance: The on-demand tankless water heater boasts a heating capacity of 80,000 BTU and a hot water flow rate of 3.6 gallons per minute (GPM). It can provide continuous hot water for 2-3 water supply points, making it sufficient to meet the hot water needs of a household's bathroom, kitchen, and bar area.
- No Waiting Required: Unlike traditional tank water heaters, tankless water heaters eliminate the need for a 30-minute preheating wait time, allowing you to have unlimited hot water on demand.
CA$499.00
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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

DWALE

Propane Tankless Water Heater, 4.21GPM 16L Indoor,Instant Hot Propane Gas Water Heater with Fahrenheit Digital Display,Multi-Protection

DWALE

CA$329.99

More Details
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. It efficiently meets both bathroom and kitchen hot water demands without the need for an expansion tank. Note: In cold weather, drain residual water by opening the pressure relief valve if the unit will not be used for an extended period.
- 【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 4.21 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 68,000 BTU per hour, this 4.21 GPM instant propane water heater provides on-demand hot water for 2–3 points of use simultaneously, making it ideal for bathrooms and kitchens. The advanced combustion technology minimizes gas consumption and reduces operational noise for a more efficient and quieter experience.
- Easy Installation & Use】– This tankless propane water heater is designed for quick and hassle-free setup. It comes equipped with standard 1/2" NPT water fittings, and a 2.5" horizontal vent pipe for easy installation. For safe operation, ensure proper ventilation and install a smoke exhaust pipe as required.
CA$329.99
5
Best Value

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

CAMPLUX ENJOY OUTDOOR LIFE

Camplux Tankless Water Heater Propane 5L, Outdoor Gas Water Heaters for RV, Campings, Cabins, Barns, Black AY132B

CAMPLUX ENJOY OUTDOOR LIFE

CA$239.99

More Details
Main highlights
- Versatile Applications-The lowest water pressure at the 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 showers anymore
- Portable, Lightweight Design-This portable water heater weights only 10 pounds and comes with a folding handle that keeps it out of the way and enables easy setup outside
- Package Content-This Camplux AY132B 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
- More Showers with Less Water-Once you have your ideal temperature you can simply control your shower by switching the shower rose on / off. Giving you time to soap up while saving water. Turn on your shower head again and take off where you left
- 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
CA$239.99

5 Best Propane Tankless Water Heaters of 2025

FOGATTI Propane Tankless Water Heater, Up to 5.1 GPM, 120,000 BTU Indoor Installation Instant Hot Water Heater, InstaGas Classic 120 Series

ThermoMate 98,500 BTU Propane Tankless Water Heater, Up to 3.81 GPM, High Efficiency Instant Hot Water for Whole House Use, Residential Indoor on Demand Hot Water Heater, Multiple Points of Use

Ranein Propane Gas Tankless Water Heater with Vent Pipe, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater

Propane Tankless Water Heater, 4.21GPM 16L Indoor,Instant Hot Propane Gas Water Heater with Fahrenheit Digital Display,Multi-Protection

Camplux Tankless Water Heater Propane 5L, Outdoor Gas Water Heaters for RV, Campings, Cabins, Barns, Black AY132B

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