Best Tankless Gas Water Heater
2025
If you’re looking to upgrade your current hot water heater, then you’ve come to the right place. Here you’ll find information on the best tankless gas water heaters on the market. Our top picks include the Noritz NRC66DVNG, Westinghouse WRGTNG199, Rinnai RU199iN Sensei, and Excel i12-NG. If you’re still on the fence about whether a tankless gas water heater is for you, then read on to find out which model has the best features.
Rheem 240V 2 Heating Chambers RTEX-18
- External digital thermostatic control with LED display (+/1 degree accuracy)
- Most advanced self-modulation, adjust power to meet hot water demand
- Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
- Simple installation – bottom 3/4 inch NPT water connections
- Threaded for easy replacement, simple installation, digital temperature display
The Rheem 240V 2 Heating-Chambers RTEX-18 is a self-modulating electric indoor inline water heater that uses 240 volts to heat your water. It is 99% efficient, which means you can save on your energy costs from the first month. The RTEX-18 is made from high-quality materials and components. However, it’s not perfect. The unit may not heat as fast as some other brands, but it’s still a good choice if you need a self-modulating heater that doesn’t take up much space.
Rheem RTEX-18
The Rheem RTEX-18 is a residential tankless water heater that uses 240 volts to heat water. It heats water at a constant temperature and can deliver up to seven gallons of hot water per minute. It is a fast and easy to install unit that heats water quickly and efficiently.
The RTEX-18 features two long-lasting copper immersion heating elements, which improves its performance and durability. It also has a brass top for superior heating and threaded heating elements, which provide a higher flow rate.
Rheem RTEX-18 240V 2 Heating Chambers
The Rheem RTEX-18 230V 2 Heating Chambers Residential Tankless is a powerful, efficient tankless water heater. With 99% energy efficiency, it can significantly cut your energy bill from the first month. It’s easy to operate and comes with high-quality materials. The gray design of the tankless water heater gives it a sleek profile. It doesn’t require a lot of space for installation.
This model can be installed in a manufactured home that has already been installed to minimum code. It can be used in single or limited multi-applications, and it requires a 1/2-inch-NPT side water connection. It can also be upgraded to a three-element model later. The RTEX-18 is also equipped with advanced self-modulation, which reduces power consumption during periods of low demand.
Rheem RTEX-18 self modulating electric indoor inline water heater
The Rheem RTEX-18 self-modulating electric indoor inline water heater is a powerful yet simple unit that runs on mains electricity. It can be powered by a single circuit breaker or 240 volts, and it does not need venting. It features a digital LED display and anti-corrosive internal parts. Its copper immersion heating elements and brass tops are sturdy and durable.
Another great feature of the RTEX series is its dual flush capability, which means it can run multiple fixtures at once. This unit also has an impressive 4.4 GPM flow rate, which is higher than average for units in its size class. As long as the incoming water temperature is optimal, the RTEX-18 can easily keep up with your hot water demand. Furthermore, this model can heat water to 140 degrees, which is higher than most units in its class.
Rheem RTEX-18 operating on 240 volts
If you are looking for a tankless electric water heater, you can choose from the Rheem RTEX-06 or Rheem RTEX-18 models. They operate on 240 V and provide 5.5 kW of power. They are also capable of providing 1.5 GPM to one fixture. These heaters feature simple controls, such as push-button on and off controls and external LED temperature displays.
Among other benefits, the Rheem RTEX-18 operates on 240-volt electricity and is easy to install. It can also be run by a single power source. It requires 240-volt power and two 40-amp circuit breakers. It does not require venting and comes with an LED digital display and anti-corrosive internal parts. The heating element is composed of robust copper and brass.
Rheem RTEX-18 installation
If you’re preparing to install a tankless water heater, the Rheem 240V 2 Heating chambers RTEX-18 Residential Tankless may be the right choice for your home. This product uses a self-modulating design that adjusts the unit’s power to hot water demands. This reduces the risk of discontinuous performance.
This tankless water heater is designed for point-of-use installation. It is suitable for homes with lower ground temperatures. Its single heating chamber has a power rating of 5.5 kW, which is enough to heat a one-flight-feet room. It is equipped with a push-button ON/OFF control and an external LED temperature display.
Marey GA24CSALP Propane Tankless Water Heater
- Efficient Performance, Smart Design: Our advanced technology ensures high efficiency and long-lasting durability, boasting a powerful 170,000 BTU capacity. Its user-friendly display allows for dynamic power adjustment tailored to your specific needs.
- Full-house Endless Hot Water: Enjoy unlimited hot water with up to 3-4 use points running simultaneously, fulfilling all household or light-commercial needs.
- Certified Quality: CSA certified in the USA and Canada, guaranteeing top safety, quality, and durability standards. Multiple security layers, including overheat, flame failure, and anti-freezing features, ensure worry-free operation.
- Save Space and Installation-time: Free up storage space with a compact wall- mounted design. Simplify installation with its standard 3” size exhaust venting. (Note: Not recommended for elevations above 2,000 ft.)
- Marey´s propane tankless water heater comes with 5 year limited warranty.
The MAREY GA24CSALP is a Tankless Water Heater with a minimum BTU of 24,000 and a maximum BTU of 170,000. The unit has a water pressure range of 15-150 MPa and a propane gas inlet pressure range of 8.0-1.99 kPa. It weighs a net weight of 40.8 lbs – 18.5 kg and measures 665 x 435 x 186.5 mm.
Propane Tankless Water Heater
The MAREY GA24CSALP PropanE Tankless Water Heater is a great choice for anyone who is looking for a low-maintenance and energy-efficient option for their home. With a maximum input rating of 170,000 BTU/hr and a flow rate of 8.34 GPM at a 35F temperature rise, this unit is perfect for any size home, apartment, cabin, or small commercial space.
This unit comes with a built-in back-draft prevention device and stainless steel horizontal vent pipe. It also has a flame failure device, child lock technology, and fully automatic temperature control.
Whole house indoor solution
The Marey GA24CSALP is a tankless water heater with a minimum BTU of 24,000 and a maximum BTU of 170,000. It is CSA certified for the US and Canada market and has a water pressure range of 15-150 MPa and propane gas inlet pressure of 8.0-1.99 kPa. The unit weighs approximately 40.8 lbs. (18.5 kg) and has dimensions of 665 x 435 x 186.5mm.
Specifications
The Marey GA24CSALP Tankless Water Heater has a BTU rating of up to 170,000 and an input temperature range of 15-150 MPa. It also comes with advanced safety features, such as flame failure and overheating protection. It is CSA-certified for use in the US and Canada. This unit is designed with a compact, streamlined design and a copper heat exchanger for optimal heating and cooling performance.
Installation
The Marey GA24CSALP is an excellent tankless water heater with a minimum BTU of 24,000 and a maximum of 170,000 BTU. It is designed for a variety of homes and has a water pressure range of 15-150 MPa and a propane gas inlet pressure range of 8.0-1.99 kPa. It weighs approximately 40.8 pounds or 18.5 kg, and its dimensions are 665 x 435 x 186.5 mm.
Onsen – 14L Direct Vent Tankless Natural Gas Water Heater
- NATURAL GAS TANKLESS WATER HEATER + VENT KIT: Enjoy hot water on demand, anytime! The Onsen 14L Tankless Water Heater turns cold water into instant hot water, heating up to 3.6 gallons of water per minute. Fueled by natural gas, this compact and energy-efficient residential tankless water heater with 3″ wall vent kit offers an affordable hot water solution perfect for your one-bathroom apartment or small bungalow. For indoor use only. Indoor Use – LED Display Panel – 120v
- ELECTRONIC IGNITION: No pilot light or wasted gas! Unlike a traditional hot water heater, Onsen’s indoor tankless water heater offers the ultimate convenience and energy savings for your cabin or home—only igniting and consuming gas when you turn on your tap, heating the incoming water via the copper heat exchanger. Unit plugs into a standard 120-volt electrical outlet with a UL-listed power cord.
- DIRECT VENT SYSTEM: Safe for small indoor spaces! Power vent systems waste more energy by drawing air from inside the house and venting outside. Onsen is designed with a direct wall vent system, pulling air from outside, efficiently burning with the natural gas, and then exhausting externally. This system is more efficient and allows for installation in smaller, restricted areas, such as a closet. Complete wall vent kit (3″) included for seamless installation.
- SUPERIOR QUALITY: Get more with Onsen! Our indoor 14L Tankless Water Heater features an integrated control system with multiple protective functions to ensure safety and reliability—monitoring the temperature of the water being produced and adjusting the burner accordingly to deliver a stable hot water supply. While the LED Display and digital control panel allow you to view current settings and select outgoing temps and operational modes. CSA Certified for both the USA and Canada.
- ONSEN: Inspired by the thousands of natural hot springs found across Japan, Onsen Indoor Tankless Water Heaters bring the convenience and comfort of instant hot water to your tiny home, cabin, or cottage, whether you’re on or off-the-grid.
The Onsen – 14L Direct Vent is a small, energy-efficient tankless water heater for indoor use. Designed with a compact design and CSA certification, this product can be installed in a remote location or off-grid home. It ships from Quebec and will arrive in 6 to 8 business days in Alberta. This compact, energy-efficient tankless natural gas water heater requires less than one amp of electricity.
NPN series non-condensing tankless natural gas water heaters
Navien Inc. has introduced a new 120,000-BTU model to the company’s NPN series. This is the fourth model in Navien’s NPN-E (exterior) line and is available in both natural gas and liquid propane configurations. Designed for outdoor use, the NPN-120E provides 4.2 gpm at 45 degrees Fahrenheit and 0.81% UEF. Compared to its predecessors, the NPN series is much smaller than the NPE line, and takes up 80% less space.
Ensure proper gas pressure is present in the tankless water heater. This is crucial for proper operation. You need to ensure that the valve is open and that you have paid the gas bill. If the system is frozen, hot water may not reach all appliances. To fix this problem, thaw the pipes naturally, and stop overloading the system. In case of a malfunctioning water heater, you must set the thermostat back to 120 degrees Fahrenheit.
Power vent gas water heaters
Power vent gas water heaters are among the best choices for homeowners that require ample amounts of hot water. These water heaters can deliver sufficient hot water for your home without compromising your family’s health. Rheem PROG50-42N RH67 PV and AO Smith GPHE-50 models are examples of excellent power vent gas water heaters. These water heaters have the following features:
The electrical blower fan of a power vent water heater forces combustion air to escape the water heater and the surrounding area. This fan is connected to a nearby electrical outlet. Besides, power vent gas water heaters do not use fuel, which makes them economical to operate. These heaters also contain a built-in shutoff mechanism that automatically powers off the water heater if the fan stops working. Moreover, the longer exhaust venting line allows more freedom in locating your water heater.
The Onsen 14L Direct Vent Tankless Indoor Gas Water Heater is a great option for a home that wants hot water when you need it. It uses natural gas to heat water and activates with an electronic ignition system. With a direct vent system, the Onsen does not require two exhaust vent pipes, which means that it can be installed in a smaller space. Another great feature is its control panel, which features an LED display.
Installation
The Onsen 14L Indoor Gas Tankless Water Heater transforms cold water into hot water when you need it. This device uses natural gas as its fuel source and operates on an electronic ignition. It features a direct vent system to prevent warm indoor air from escaping the home. You can easily control the heater’s operation using the included control panel and LED display. Once installed, the Onsen 14L will keep your bathroom warm.
When using the Onsen 14L Direct Vent Tankless Water Heater, it is important to follow installation instructions carefully to ensure the safety of your family. Despite its low energy consumption, the Onsen 14L Direct Vent Tankless Natural Gas Water Heater may produce a foul odour. You can detect gas leaks by soaking a clean piece of cloth in a soapy solution. However, if you are not sure about gas pipe connections, it is best to contact a licensed contractor for this job.
RINNAI Ru Series Sensei Se+ RU160in
- Endless hot water for your entire home
- RU160iN sensei SE+ super high efficiency tankless hot water heater – natural gas: indoor installation only
- Up to 9 GPM hot water flow Rate (varies by groundwater temp)
- Circ-logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
- Residential factory warranty – 120 months (heat exchanger), 12 months (labor), 60 months (parts)
The Sensei series offers a wide variety of features and options. The condensing technology allows these units to operate in the coldest temperatures, and the integrated freeze protection system prevents them from becoming damaged by extreme cold. The condensing system also has an integrated check valve to prevent cold air from entering and backflow of exhaust during common vent applications. The Fiber Mesh Premix Burner helps maintain even flame distribution and optimal performance for any demand.
Sensei Ru Series
The RU160 is part of the Rinnai Sensei SE+ Series, a line of ultra-efficient tankless water heaters. Available in two fuel options, Liquid Gas and Natural Gas, the Sensei SE+ Series is ideal for both indoor and outdoor installations. Its dual venting option provides two separate routes for hot water and waste. You can easily install the Rinnai Sensei Se+ on your outdoor kitchen or patio.
Sensei Se+
The Sensei Series from Rinnai features a condensing burner with a high efficiency factor (UEF) of 0.85 or higher. The SE line-up of condensing tankless water heaters achieves UEF ratings between 0.85 and 0.90 and is not ENERGY STAR qualified. The SE+ Series is available in RUCS and RUS models, which both use natural gas or propane to meet indoor water heating needs.
Sensei Se+ Series condensing tankless water heater
The RINNAI Ru Series and Sensei Se+ Series condenser water heaters are both made by the manufacturer of Japanese-made appliances. The latter is known for its environmentally-friendly features and low NOx emissions. Both have zero clearance and sealed combustion and are available with various features. However, the cost of a condensing tankless water heater is higher than that of a non-condensing unit. The former is more cost-effective to buy but requires more gas, so you will need to choose carefully.
Sensei Se+ Series installation
The Rinnai Sensei water heater provides homeowners with flexible installation options. This water heater is equipped with 14 different venting options and offers an industry-leading maximum venting run of 65 feet. The Sensei also features easier maintenance, as every component can be removed in less than 10 minutes. It is Wi-Fi enabled and includes Amazon Alexa integration. These water heaters are designed to meet the highest quality standards.
Rheem RTGH-95
- 94-Percent Energy efficient with stainless-steel condensing heat exchanger
- Intelligent electronic controls designed to increase energy efficiency and safety
- Third party efficiency listed by AHRI
- Up to 38-Feet of 3-Inch PVC Pipe or 5-Feet of 2-Inch PVC Pipe
- Low Nox Version
If you want a high-flow, energy-efficient tankless water heater, the Rheem RTGH-95DVLN-2 is an excellent choice. Compared to its Rinnai counterpart, the Rheem is less expensive and still offers excellent water flow and efficiency. It’s a perfect fit for large homes with multiple bathrooms, thanks to its energy-efficient design and 9.5 gpm capacity. Its continuous hot water delivery ensures that you will never run out of hot water.
Another benefit of this Rheem tankless gas water heater is its high-efficiency condensing technology. Unlike a tank-style heater, this model is able to withstand freezing temperatures of up to 30 degrees below zero. It also features a self-diagnostic utility that can automatically monitor its function and alert you to any potential problems with the gas or water supply. It also features a self-diagnosis feature, which helps you troubleshoot any potential problems before you start experiencing problems.
The Rheem RTGH-95 is part of the Prestige Series, a collection of high-efficiency condensing tankless gas water heaters. The Prestige models all surpass ENERGY STAR requirements. Other features include an exclusive water savings setting and a built-in condensate neutralizer. The Prestige Series is also available in a commercial model for high temperatures.
Aside from the energy-efficient design, the Rheem RTGH-95 offers continuous hot water with a built-in condensate neutralizer. Its LED lights indicate when the heating element is active or in standby mode, making it perfect for any sized home. Rheem is a leader in water heating for over a century. Its tankless water heaters are environmentally friendly and the perfect solution for any sized home. The Rheem RTGH-95 tankless water heater has been awarded the Best Green Product in Building Products Top 100 list, a list that recognizes the most innovative products for builders and homeowners. You can get a Rheem tankless gas water heater for a great discount at Westside Wholesale!
In the US, European and Japanese markets, tankless gas water heaters were very popular decades ago. While they’ve improved since then, they’re still expensive, need expensive stainless steel vents and produce hot exhaust, and have lower efficiency at short intervals. A gas tankless water heater can supply hot water to all faucets at once. A gas tankless water heater can also be connected in parallel to a standard electric water heater for more hot water.
Rinnai V Series He Water Heater
- Max BTU’s 150,000
- Max Energy Factor 0.82, Wattage: 76 watts
- Meets California and Texas NOx Emissions Standards
- Lightweight and Compact
There are many benefits to choosing a Rinnai water heater. These units include a built-in recirculation pump and a 12 year heat exchanger warranty. They are available in two different models, one for natural gas and one for propane. Depending on the climate where you live, you can select between a 5 and 7.5 GPM unit. Read on to find out more. Weigh all the advantages and disadvantages of each one and decide which one best meets your needs.
Low-NOx
The Rinnai V Series He is known for its low NOx emissions, which makes it a great option for homes with strict emissions laws. It can heat up to 9.4 GPM of water, and its advanced Circ-Logic technology ensures hot water availability in times of high demand. While this unit is not as efficient as a condensing tankless water heater, it’s still a very good choice for homeowners looking to save money on energy bills.
Wi-Fi
The Rinnai Control-R(tm) Wi-Fi Module comes with 5 feet of wire for connecting the water heater. This Wi-Fi-ready controller complies with California Energy Commission’s Title 24 standards. The Rinnai Tankless Water Heater should be installed in a central location, such as the mechanical room or basement. Installation can take place up to 300 feet away from the water heater. It is best to use 18 to 22 gauge wire to ensure strong Wi-Fi signals.
Isolation valves
Isolation valves are a vital part of your tankless water heater. They allow you to control water flow in different parts of the system. For instance, you can shut off water flow in the shower when using the shower head or turning on the faucet. An isolation valve works like a spigot under the sink that lets you control the flow of water. This way, you don’t need to bend down over the counter to turn off the faucet. Likewise, you can shut off the water flow in your system when performing maintenance or cleaning. Usually, the isolation valve is the same as the one found under the sink.
12-year warranty
Rinnai offers a 12-year limited warranty on its V Series He heaters. This warranty is valid in the U.S. and Canada. It can be extended to the buyer in the event that the product fails to function properly. The warranty covers the product and labor costs in case of repair or replacement. The warranty can also cover parts and labor costs if the unit is defective. The warranty can also be extended to residential applications, such as laundry and dishwashers.
Cost
The RINNAI V Series He tankless water heater is designed to provide ample hot water for showers and bathtubs. This product can be used for multiple applications, including laundry, dishwashers, and any other residential use. Its high efficiency allows it to deliver hot water quickly and easily to multiple destinations. You can expect to pay around $1600 for this unit before installation costs are factored in. However, you may wish to consider a different model if your water heater’s cost is more important than its performance.
Sensei Super technology
The Sensei Super is a Japanese technology that delivers 199,000 BTU of heating capacity, making it the most powerful residential gas tankless water heater available. Japanese engineering is known to be very reliable and the Sensei Super features a ten-year heat exchanger warranty. The Sensei Super also comes with top-of-the-line warranties. It comes with a ten-year heat exchanger warranty and is one of the most affordable natural gas tankless heaters on the market.
Noritz NR98-SVNG Natural Gas Tankless Water Heater
- Flow rates up to 9.8 GPM
- Heat Exchanger manufactured from commercial grade copper, 25% thicker piping than standard models
- Link two units with QC-2, Quick Connect Cord
- Remote thermostat & 6′ power cord included
The Noritz NR98-SVNG is a natural gas tankless water heater for a home with up to four showers. The Noritz NR98-SVNG features commercial grade copper heat exchangers and is perfect for homes with a variety of water needs. It features built-in safety devices and an electronic service reminder to help ensure that it remains operating at peak efficiency. For maximum safety, this unit features a 12-year heat exchanger warranty.
Natural gas tankless water heater
The Noritz NR98-SVNG natural-gas tankless water heater is the best choice for homeowners who want to save space and money on heating their home water. It is available in two different sizes: a single unit and a double unit. Both models have the same heating capacity and are designed to provide hot water for multiple purposes. However, one of them is larger than the other.
The Noritz NR98-SVNG natural-gas tankless water heater is designed to provide 6.5 GPM of hot water and is perfect for mid-size homes that have three or more bathrooms. It is made of durable commercial-grade copper that is backed by a twelve-year heat exchanger warranty. It also includes features like a service reminder and adjustable height for high-altitude installations.
Built-in safety devices
The Noritz NR98-SVNG Residential Natural Gas Tankless Water Heater has built-in safety devices to protect you and your family. Unlike conventional heaters, Noritz models feature a Uniform Energy Factor (UEF) of 0.83, and the direct electronic ignition eliminates the need for pilot lights and other traditional safety devices. In addition, the tankless water heater has a flame sensor, overheat prevention device, and freeze protection device. In addition, the Noritz NR98-SVNG includes an easy-to-use remote controller. Built-in scale detection and auto shut-off are additional safety features.
Eccotemp 45H-NG Natural Gas Tankless Water Heater
- 5 year manufacturer warranty on parts, 10 year on heat exchanger
- 6.8 GPM, 110 volt power supply
- Flow rate of 6.8 GPM at 35 degree rise, 4.57 GPM at 45 degree rise, 2.6 GPM at a 70 degree rise
- Built-in antifreeze circuit
- 155,000 BTU
This energy-efficient and quiet tankless water heater runs on natural gas. It is not recommended for installations above 5000 feet. It also is not suitable for floor heating or recirculation. If you’re interested in learning more about this unit, read on. Here are some important details. Using it properly is key to maintaining comfort and safety. Here are some of the things to look for before purchasing this heater. Let’s start with its installation instructions.
Outdoor Natural Gas Tankless Water Heater
The Eccotemp 45H-NG Outdoor Natural GAS Tankless Water Heater is a high-end outdoor model with a 6.8 GPM capacity. It is CSA certified and is easy to install. Its UL-listed, 3/4″ NPT fittings make it easy to install in your kitchen or bathroom. The 45H-NG is also EPA and CSA-certified and can handle up to two simultaneous hot water applications.
The Eccotemp 45H-NG Outdoor Natural GAS Tankless Water Heater is UL listed and is able to provide hot water in any size residential single-family home. Its low-flow, low-heat setting is ideal for most hot water heating needs. It features an anti-freeze protection system, an integrated digital display, and PCB. Its compact design and UL-certified power cord make it the perfect choice for smaller, tighter-spaced homes.
Energy efficient
The compact wall-mounted heater is equipped with a low-flow 0.8GPM gas modulating valve, a 110/120-volt UL-listed power cord, an internal exhaust fan, and Anti-Freeze protection. The fully automated control system ensures optimum performance. The 45H-NG is the best choice for larger-sized tiny homes. However, it does not support floor heating.
The Eccotemp 45H-NG is the largest indoor tankless water heater available. It provides up to 6.8 gallons per minute of hot water and 140,000 BTUs of heat per hour. Moreover, it can support two bathrooms. Since it is CSA-certified, the 45H-NG is suitable for homes with standard hot-water demands. It is available in both US and Canada versions.
Rinnai RU199iN Sensei
- Endless hot water for your entire home
- RU199iN sensei SE+ super high efficiency tankless hot water heater – natural gas: indoor installation only
- Up to 11 GPM hot water flow Rate (varies by groundwater temp)
- Circ-logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
- Residential factory warranty – 120 months (heat exchanger), 12 months (labor), 60 months (parts)
The Sensei RU199iN tankless gas water heater is a natural gas model that comes in a suitcase-sized design. It’s perfect for use in indoor locations and is easy to install. With 199,000 Btu’s at 92% efficiency, it can power up to 3 major uses at once. The ultra-small design and Wi-Fi compatibility make it easy to install in any space.
With its improved combustion system, the SENSEI tankless water heater provides an unending supply of hot liquid. In addition to the endless supply of hot water, it also features a space-saving design and environmentally-friendly features. The SENSEI series of Rinnai tankless gas water heaters have ENERGY STAR certification and can save up to 40% of energy over traditional tank models. The tankless technology allows for a 2″ vent run, which reduces the risk of a fire.
The SENSEI water heater is ideal for retrofits and new installs. It features the industry’s most versatile venting system. It can be vented using concentric, direct, or room air venting. Other features include an adjustable mounting plate, rotatable pressure relief valve, and a user-friendly control panel. You can easily adjust the temperature and other parameters from the comfort of your own home.
Great Alternatives
- One model – Indoor/Outdoor, Natural Gas/Propane
- Smart Sense -Gas Control System
- Smart Connect – Rinnai Central App – Setup, Service & Troubleshoot
- Quick Flush – Simplified Flushing
- Industry leading 2″ venting up to 75 feet; Recirculation: Field convertible with Internal Pump kit; Versa Vent – Outdoor Vent Adaptor and Lime Detection
- NATURAL GAS TANKLESS WATER HEATER: Enjoy hot water on demand, anytime! The Onsen 14L Tankless Water Heater turns cold water into instant hot water, heating up to 3.6 gallons of water per minute. Fueled by natural gas, this compact and energy-efficient residential tankless water heater offers an affordable hot water solution perfect for your one-bathroom apartment or small bungalow. For indoor use only.
- ELECTRONIC IGNITION: No pilot light or wasted gas! Unlike a traditional hot water heater, Onsen’s indoor tankless water heater offers the ultimate convenience and energy savings for your cabin or home—only igniting and consuming gas when you turn on your tap, heating the incoming water via the copper heat exchanger. Unit plugs into a standard 120-volt electrical outlet with a UL-listed power cord.
- DIRECT VENT SYSTEM: Safe for small indoor spaces! Power vent systems waste more energy by drawing air from inside the house and venting outside. Onsen is designed with a direct vent system, pulling air from outside, efficiently burning with the natural gas, and then exhausting externally. This system is more efficient and allows for installation in smaller, restricted areas, such as a closet. Wall vent kit sold seperately.
- SUPERIOR QUALITY: Get more with Onsen! Our indoor 14L Tankless Water Heater features an integrated control system with multiple protective functions to ensure safety and reliability—monitoring the temperature of the water being produced and adjusting the burner accordingly to deliver a stable hot water supply. While the LED Display and digital control panel allow you to view current settings and select outgoing temps and operational modes. CSA Certified for both the USA and Canada.
- ONSEN: Inspired by the thousands of natural hot springs found across Japan, Onsen Indoor Tankless Water Heaters bring the convenience and comfort of instant hot water to your tiny home, cabin, or cottage, whether you’re on or off-the-grid.
- External digital thermostatic control with LED display (+/1 degree accuracy)
- Most advanced self-modulation, adjust power to meet hot water demand
- Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
- Simple installation – bottom 3/4 inch NPT water connections
- Threaded for easy replacement, simple installation, digital temperature display
- Endless Hot Water: FOGATTI tankless water heater gas delivers a high flow rate of 4.0GPM with 90,000 BTU heating power, providing reliable hot water for 2-3 locations simultaneously
- 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
- Safety & Durability: FOGATTI natural gas 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
- 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
- Compact Design: Measuring 22.76” H x 14.57” W x 7.0” D, it saves over 50% more space compared to traditional tank heaters. You can install it in most corners of your home
- 【Tankless Water Heater】-Propane water heater tankless Steady Steady Temperature Control with more safety protection such as flame failure device,anti-freezing protection,over heating protection,Just need 3.6PSI of water pressure,4.21gallons of hot water can be output per minute.The maximum temperature raise is 167°F,Applicable only Propane（LPG)
- 【Efficient & Energey Saving】-The 4.21 GPM Instant Propane Water Heater ,Maximum power output 68000btu/hour,on-demand hot water for 2-3 points simultaneous water supply for bathroom,kitchen hot water demand， Propane Water Heater exchanger and main burner are desinged with advanced combustion technology to decrease gas consumption and burning noise.
- 【Quality Material】-This of ours Water Heater Crafted from stainless steel, our Propane water heater exhibits high temperature resistance and corrosion resistance. It also features a built-in oxygen-free copper water tank, reduce heat loss ensuring a prolonged service life.with with LED smartdigital display effortlessly adjust the temperature between 86°F-167°F according to your preferences.
- 【Easy Assemble and Use】-Applied with standard 1/2″ NPT water fitting and gas inlet, comes with 2.5″ horizontal vent pipe for quick installation.Note: For normal operation, this product must be installed with proper ventilation and a smoke exhaust pipe.
- 【Widely Application 】-Save over 50% of available space compared to tank water heater.for both bathroom and kitchen hot water demand. great for home,small cabins and remote apartments indoor installation. without the need to install an expansion tank,Note: In cold weather, if the water heater is not used for a long time, it is necessary to open the pressure relief valve to drain the residual water in the water heater.
- 𝟭.𝟱𝟴𝗚𝗣𝗠/𝟲𝗟 𝗣𝗿𝗼𝗽𝗮𝗻𝗲 𝗪𝗮𝘁𝗲𝗿 𝗛𝗲𝗮𝘁𝗲𝗿 – Maximum power output 41,000BTU/Hr.The temperature raise is 109.4℉ (43℃) at its highest point and 55.4℉ (13℃) is at its lowest point of 1.58 GPM. Also, 1.58 gallons of hot water can be produced per minute at the flow rate of 1.58 GPM. Low water pressure start up, just need 3.6 PSI of water pressure to start.
- 𝗚𝗼𝗼𝗱 𝗳𝗼𝗿 𝗢𝗳𝗳-𝘁𝗵𝗲-𝗚𝗿𝗶𝗱 – Runs on a standard 20 lb. liquid propane tank and is equipped with an electronic ignition powered by two D-cell batteries. Can be used in a variety of scenarios: while you’re camping, RVing, hunting, hanging poolside, washing your pets or horses, cleaning your vehicle, or even in your tiny home, greenhouse, or cabin house.
- 𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗦𝗮𝘁𝗲𝗳𝘆 𝗣𝗿𝗼𝘁𝗲𝗰𝘁𝗶𝗼𝗻 𝗦𝘆𝘀𝘁𝗲𝗺 – With CSA certification, safe as per Canadian and US Standard. Features over-heating protection, low water flow protection, dry combustion protection, anti-freezing protection, high water pressure protection and flame failure device.
- 𝗟𝗘𝗗 𝗗𝗶𝗴𝗶𝘁𝗮𝗹 𝗗𝗶𝘀𝗽𝗹𝗮𝘆 – Bright power, the temperature readout as to not get the water to hot or cold.
- 𝟭-𝗬𝗲𝗮𝗿 𝗖𝘂𝘀𝘁𝗼𝗺𝗲𝗿 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 – We provide a 1-year Warranty against manufacture defects and lifetime customer support.
- 【Rapid Hot Water Delivery】 Experience the convenience of rapid hot water delivery with our tankless water heater. With its powerful heating system, you can enjoy hot water in seconds, eliminating long waits and ensuring immediate comfort.
- 【Easy Installation】 With standard 1/2″ NPT water fitting and gas inlet,our water heater includes a 2.3″ horizontal vent pipe for easy installation. Note: Proper ventilation and a smoke exhaust pipe must installed for normal operation.
- 【Efficient & Energy Saving】 Our Instant Natural Gas Water Heater provides on-demand hot water, accommodating simultaneous use for bathroom and kitchen needs. The heat exchanger and main burner utilize advanced combustion technology to reduce gas consumption and minimize noise，allowing you to enjoy hot water without the distraction of a loud appliance running in the background.
- 【Compact Size&Space-Saving】 Designed for easy and flexible installation, the tankless water heater can be mounted in various locations, conserving valuable space. Its compact and lightweight design makes it an excellent choice for both residential and also ideal for RVs, cabins, and other limited-space applications.And ensure your saftety with enhanced safety protections, including a flame failure device, anti-freezing protection, and overheating protection.
- 【Durability and Longevity】 Constructed with high-quality materials and advanced engineering, this tankless water heater is built to last. Its robust design ensures durability and long-term reliability, providing you with years of efficient hot water supply.
- 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.
- 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.
- 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.
- 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.
- 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.
- Compact & Energy-Efficient: Camplux 10L tankless water heater, measuring just 12.8″ (L) x 5.91″ (W) x 20.28″ (H), boasts a sleek design that saves more space than traditional tanks. With a trendy, modern look and a Fahrenheit digital temperature display, it features an Eco and Full gas switch for energy savings and achieving the ideal hot water temperature
- On-Demand Hot Water: Camplux’s propane gas tankless water heater delivers an impressive 2.64 gallons per minute of on-demand hot water. Perfect for small homes, cabins, or apartments, it ensures instant hot water whenever you need it
- Safety Features: Packed with safety features including flame-out protection, anti-freezing (manual drainage required), over-heating protection, and air flow pressure switch protection. The safe electronic ignition system plugs into a standard 120V electrical outlet with a UL-listed cord
- Easy Installation: It utilizes standard 1/2″ NPT water fitting and gas inlet, comes with a 2″ horizontal vent pipe for efficient power ventilation, and requires a minimum activation rate of 0.65 GPM.The maximum input rating is 68,000 BTU, and the water connection location/size is at the bottom with a 0.5-inch NPT. For propane tank connections, you’ll need a gas regulator (Camplux model KR-106A) and a 5/8″ NPT male to 1/2″ BSP female gas connector adapter
- Considerate Customer Service: Here at Camplux, customer service is everything! We offer 24 shift hours customer service make the customer experience easy and fast through our live chat, phone support & our online helpdesk. Have a question? Give us a call at (844) 538-7475
- 【Tankless Water Heater】-Propane water heater tankless Steady Steady Temperature Control with more safety protection such as flame failure device,anti-freezing protection,over heating protection,Just need 3.6PSI of water pressure,3.18gallons of hot water can be output per minute.The maximum temperature raise is 149°F,Applicable only Propane（LPG)
- 【Efficient & Energey Saving】-The 3.18 GPM Instant Propane Water Heater，on-demand hot water for 2-3 points simultaneous water supply for bathroom,kitchen hot water demand， Propane Water Heater exchanger and main burner are desinged with advanced combustion technology to decrease gas consumption and burning noise.
- 【Quality Material】-This of ours Water Heater Crafted from stainless steel, our Propane water heater exhibits high temperature resistance and corrosion resistance. It also features a built-in oxygen-free copper water tank, ensuring a prolonged service life.with Fahrenheit Digital Display smart digital LED display featuring a large high-definition screen, effortlessly adjust the temperature between 86°F-149°F according to your preferences.
- 【Easy Assemble and Use】-Applied with standard 1/2″ NPT water fitting and gas inlet, comes with 2.5″ horizontal vent pipe for quick installation.Note: For normal operation, this product must be installed with proper ventilation and a smoke exhaust pipe.
- 【Widely Application 】-Constant Propane Water Heater It is only 1/6 the size of a 50 gallon tank water heater,for both bathroom and kitchen hot water demand. great for home,small cabins and remote apartments indoor installation. without the need to install an expansion tank,Note: In cold weather, if the water heater is not used for a long time, it is necessary to open the pressure relief valve to drain the residual water in the water heater.
How to Choose the Best Tankless Gas Water Heater
The highest water heating capacity of the six tanks on our list is the Takagi T-H3-DV-N, with a capacity of 10 gallons per minute. It is suitable for use in both gas and electricity and is versatile enough for multiple applications. It can also handle up to four bathrooms, which is nice in colder climates. However, if you’re not in a particularly large household, this model is probably better suited for you.
In addition to saving water, a tankless gas water heater will also increase your home’s gas usage. You can program it to heat water only at certain times of the day, reducing your monthly utility bills. You can even use bypass valve assemblies in areas with hard water, which makes it easy to flush out deposits of calcium. This model is the best option for homes with hard water. But it is worth considering the additional costs.
A tankless gas water heater can be costly to install, but it’s much more economical than an inline unit. It can be installed in any room and is more affordable if your home uses natural gas. A tankless gas water heater can be installed in a crawl space. You should check reviews online and make sure that the plumber offers a written estimate. It’s also much more convenient than an inline unit.
There are several benefits to choosing a tankless gas water heater. Firstly, these units are smaller than standard models. They are designed to fit into a standard wall outlet and feature child safety locks and extra energy-saving modes. They are also safe to operate, and the thermostat can be programmed to turn off automatically if the need arises. It’s worth noting that the majority of tankless gas water heaters have a high price tag, so it’s important to make sure that you compare them carefully.
Another important consideration is how much space your unit requires. If you’re planning to install one in a closet or under the eaves, you’ll need a lot of space. If you don’t have a lot of space, you can choose a tankless water heater that is smaller and lighter than your existing unit. With this, you’ll be saving on gas, and saving money on electricity.
If you’re concerned about energy costs, a gas tankless water heater can be very cost-effective for large houses. Unlike traditional tanks, tankless systems can be plugged into an electrical outlet and are easily installed. They are designed to be safe for children and have extra energy-saving modes. They also have no pilot light. This can save you money and reduce your carbon footprint. They are much more convenient than inline heaters.
The best tankless gas water heaters have a high flow rate. At 9.8 gpm, they can heat water for a whole house or multiple bathrooms. Moreover, they can be used anywhere. A typical tankless gas water heater is only as efficient as its installation location. In contrast, a tankless system will save energy for the entire household. But a small home should not buy a large tankless gas unit.
When choosing a tankless gas water heater, consider its size and flow rate. You’ll need at least three gallons per minute for the shower and one gpm for the faucet. You should also consider its temperature-reduction features. A higher Energy Factor means that the unit will be more energy-efficient and reduce your utility bill. This is a good decision for homes with children. Those who are worried about the cost of the unit should consider purchasing one.