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10 Best ng tankless water heater in Canada
Best Choice01RaneinRanein Natural Gas Tankless Water Heater, Outdoor Max 8.5 GPM, 190,000 BTU Instant Hot Water Heater
Main highlights- Wide Application：190,000 BTU high heating capacity and maximum 8.5 GPM. It is suitable for 4-6 outlet points, which can satisfy whole family. Equipped with Anti-Freeze Protection: Prevents the water heater from freezing and cracking internally.
- Note：If you encounter any issues, please contact us. In cold weather, if the water heater is not used for a long time, the pressure relief valve needs to be opened to drain the remaining water in the water heater. Not recommended for areas over 2,000 feet.
- 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.
- Fans Placed Underneath：It will be more secure in terms of safety, and no smoke backflow will occur. The blower has large power and can automatically adjust the rotating speed according to the change of external wind pressure and the change of water temperature to provide sufficient oxygen for gas combustion, ensuring full combustion and safer use. Low noise and longer service life.
- Easy to Assemble and Use：Uses standard 3/4" NPT water inlet fittings and air inlets for quick installation. Its compact size of 24.3"L x 15" W x 8.3"H takes up almost no space. If you have any questions about installation and operation, please do not hesitate to contact us and we will serve you wholeheartedly.
9.8Exceptional
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- 02ONSEN
ONSEN 14L Natural Gas Direct Vent Tankless Water Heater - 3.6 GPM, 100K BTU - Hot Water On Demand - for Small Space Indoor Use - CSA-Approved for USA & Canada
Main highlights- ENERGY SAVINGS – Electronic ignition with no pilot light and an average power draw of 30W (120V), so it only runs when hot water is needed.
- ENDLESS HOT WATER ON DEMAND – Ideal for 1-bath homes, apartments, tiny homes, cabins, and cottages, this direct vent natural gas tankless water heater delivers up to 3.6 GPM for unlimited hot water on demand.
- EASY TO USE CONTROLS – Digital control panel with LED display and 3 preset heating modes for simple, customizable temperature control.
- DIRECT VENT SYSTEM – Draws outside air for efficient combustion and safe indoor installation in smaller spaces such as closets. 3" wall vent & air intake kits sold separately.
- CSA CERTIFIED SAFETY – CSA approved for the USA & Canada with built-in safety features including over-heat protection and automatic shutdown in case of accidental flameouts.
9.7Exceptional
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- 03Ranein
GEN II Ranein Natural Gas Tankless Water Heater Max 4.3 GPM, 100,000 BTU Indoor On Demand Instant Hot Water Heater with LED Temperature Control Panel, Vent Pipe
Main highlights- Steady Temperature for Comfort: Advanced tech keeps water temperature stable, auto-adjusting flow and heat – no sudden changes, perfect for showers and daily use.
- Space-Saving for Small Areas: Compact wall-mounted gas tankless heater fits apartments/small homes/renovations – frees up floor space.
- Save Money on Extra Costs & Energy: Kit includes exhaust pipe (no extra purchase needed); its oxygen-free copper tank cuts heat loss to lower energy use, fitting standard 1/2" NPT water & gas ports.
- Professional Installation Note: Must be installed by licensed pros per local codes – not recommended for areas over 2,000 feet elevation.
- Multiple Smart Modes for Daily Needs: Comes with diverse smart modes: 4-Season (auto adapts to inlet temp), Kitchen (100°F adjustable), Bathtub (50-800L, full-water beep) – meets various daily hot water demands effortlessly.
- Energy-Saving to Cut Bills: Heats water on demand, reducing standby waste vs traditional tank heaters – lowers utility costs and supports eco-living.
- Endless Hot Water for Home Use: This 4.3 GPM, 100,000 BTU gas tankless heater supplies 2-3 taps (shower/kitchen/bar) – no more hot water shortages for daily household needs.
9.4Excellent
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- 04Ranein
Ranein Natural Gas Tankless Water Heater with Vent Pipe, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater
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.
9.3Excellent
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Value for Money05RaneinRanein Natural Gas Tankless Water Heater with Vent Pipe, Indoor Max 4.3 GPM, 100,000 BTU Instant Hot Water Heater
25% OffMain highlights- Upgrade features: Four Seasons Function: Automatically adjust the water temperature output based on the seasonal water temperature changes. Kitchen Function: Default water output temperature is 100°F, suitable for kitchen use. Bathtub Function: Adjustable water output quantity with a reminder when the set output quantity is reached, catering to various environmental needs.
- 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 100,000 BTU and a hot water flow rate of 4.3 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.
9.2Excellent
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- 06Ranein
GEN II Ranein Natural Gas Tankless Water Heater Max 3.6 GPM, 80,000 BTU Indoor On Demand Instant Hot Water Heater with LED Temperature Control Panel, Vent Pipe
Main highlights- Space-Saving for Small Spaces: Compact wall-mounted model fits apartments/small homes/renovations – frees up floor space while providing reliable on-demand hot water.
- Save Money on Extra Costs & Energy: Kit includes exhaust pipe (no extra purchase needed); its oxygen-free copper tank cuts heat loss to lower energy use, fitting standard 1/2" NPT water & gas ports.
- Professional Installation Advice: Must be installed by licensed pros per local building/plumbing codes – not recommended for areas above 2,000 feet elevation.
- One-Click Specialized Modes: 4 preset modes (Dish 100°F/Fruit 95°F/Infant 104°F/Elderly 107°F) – no manual adjustments for different daily needs.
- No Sudden Temp Changes, Stable Experience: Advanced tech maintains steady water temperature; no sudden spikes or drops – ideal for showering or bathing infants comfortably.
- Endless Hot Water for Home Multi-Scenes: Boasts a max 3.6 GPM & 80,000 BTU for 2-3 taps (shower + kitchen sink + bar) – no more hot water shortages for daily household use.
- Cut Down Monthly Utility Bills: Heats water on-demand, cutting standby energy waste vs traditional tank heaters – lowers monthly gas/electric bills & supports eco-living.
8.9Very Good
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- 07GASLAND
GASLAND 2.64 GPM Indoor Natural Gas Tankless Water Heater, 68,000 BTU Residential On Demand Gas Water Heater, 120 Volt Multiple Points of Use
Main highlights- ±1°F Precise Temperature Control - Benefiting from the calculation and control of the heating power 10000 times/s by the chip, the temperature difference of the water can be precisely controlled within ±1°F.
- Wind Resistant - Equipped with DC variable frequency fan, it can withstand Category 10 typhoons and avoid safety hazards such as backflow and flameout in extreme weather.
- 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.
- Premium Heat Exchanger - The primary heat exchanger is built out of oxygen-free copper, offering better heat transfer than stainless steel and designed to be more resilient against corrosion. GASLAND tankless water heaters are built to last and save you money in the process.
- Multiple Safety Features - Comes with a long list of safety features standard. These include: built in freeze protection, an overheat cutoff fuse, outlet thermistors to monitor temperatures, and a built-in flame sensor. When the water temperature is fall below 41°F, it will starting heating to avoid freeze damage with power on.
- LED Digital Display - The GASLAND Natural Gas indoor tankless water heater has a 110/120-volt UL listed 5 feet power cord. The LED digital display screen allows you to easily adjust and view output water temperature. Bright indicator lights show water flow, fan, and flame detection, along with advanced error code technology to quickly diagnose your water heater.
- Installation Tips - This propane gas water heater must be installed in a well-ventilated area. Recommended in accordance with local building and plumbing codes by licensed professionals. And Not recommended use in excess of 2000 feet above sea level.
- 2.64 GPM Natural Gas 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.
8.8Very Good
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- 08CAMPLUX ENJOY OUTDOOR LIFE
CAMPLUX 3" Horizontal Stainless Steel Vent Pipe Kit for Indoor Gas Tankless Water Heater
Main highlights- Wall Mount Water Heater Vent Kit is supplied with all the necessary components for a quick and seamless installation, corrosion-resistant and easy to clean.
- The wall thimble for through the wall use can expand about 7.8", stretchable from 3.9" to 7.8"
- Package：2 x vent pipe ø 3", 1 x wall thimble, 1 x termination hood with backflow preventer, 1 x 90° elbow.
- Low resistance vent pipe kit is designed to prevent the entrance of debris or rain in to the vent, also provides low resistance to flue gas flow.
- Detachable horizontal vent pipe kit designed for indoor tankless water heater, can be assembled in lengths to suit your needs.
- Compatibility, the diameter of vent pipe is is ø 3", also suitable for CAMPLUX gas water heater CX264, CX360, CX422, CA422, CA528LP/NG, CA528GLP, CA528W-LP/NG, CA686W-LP/NG, safely exhausts spent air out of the system.
8.7Very Good
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- 09thermomate
ThermoMate 75,000 BTU Natural Gas Tankless Water Heater, Up to 3.06 GPM, High-Efficiency Instant Hot Water for Bathroom & Kitchen, Residential Indoor on-Demand Hot Water Heater, Multiple Points of Use
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] - This gas tankless water heater integrates 8 protections: boil-dry, freeze, flame-out, overheating, over-temperature, pipe blockage, high-temperature lock, and excessive air pressure. Equipped with 4 ceramic heating cores, it auto-activates frost protection when temperatures hit 41°F (5℃). The energy-smart system uses minimal electricity to generate gentle warmth, preventing pipe ice buildup without high energy costs.
- [Max 3.06 GPM & 75,000 BTU] - The ThermoMate instant water heater reliably delivers a comfortable single shower (2 GPM at 105°F) even when inlet water is as low as 52°F. If the summer inlet temperature reaches 65°F, it maintains full shower performance and can additionally supply a faucet at 0.5 GPM. No waiting time, no cold water shocks, perfect for the bathroom or kitchen.
- [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 indoor residential hot 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.
8.6Very Good
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- 10thermomate
ThermoMate CZ480NG 5.28GPM Condensing Tankless Water Heater, 0.86 UEF High Efficiency Instant On-Demand Hot Water Heater, Residential Indoor Natural Gas 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.
- [Save 15% & Dual Heat Exchanger] - With potential savings of 15% compared to non-condensing units, this condensing tankless water heater delivers outstanding 0.86 UEF efficiency, dramatically reducing energy usage and operational expenses. The innovative dual heat exchange system combines a condensing heat exchanger with highly conductive oxygen-free copper to capture waste heat that conventional units lose, maximizing recovery.
- [Safety & Reliable] - This natural gas tankless water heater integrates 8 protections: boil-dry, freeze, flame-out, overheating, over-temperature, pipe blockage, high-temperature lock, and excessive air pressure. Equipped with 4 ceramic heating cores, it auto-activates frost protection when temperatures hit 41°F (5℃). The energy-smart system uses minimal electricity to generate gentle warmth, preventing pipe ice buildup without high energy costs.
- [Discharge and Treatment of Condensate Water] - As a condensing unit, this water heater produces mildly acidic condensate water that you will need to discharge into a drain. We recommend installing an economical external condensate neutralizer kit (not included) at the drainage point. This simple add-on neutralizes the acid, protecting your pipes from potential corrosion.
- [5.28 GPM & 114,000BTU] - The Instant hot water heater delivers consistent hot water to 3-4 fixtures simultaneously, allowing you to have unlimited hot water on demand. No waiting time, no cold water shocks, perfect for busy households. For a comfortable shower experience with hot water fluctuations within ±1℉, the built-in chip works with an advanced water flow sensor to adjust the heating power 20,000 times per second.
8.5Good
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