If you’re looking for an efficient and affordable way to heat your water indoors, a tankless water heater could be the perfect solution. Unlike traditional water heaters, tankless models don’t store hot water in a tank, which means you can save a significant amount of energy and money on your utility bills. However, with so many options on the market, it can be difficult to determine which one is the best fit for your needs.
Before making a purchase, there are a few key factors to consider. First, think about the size of your household and your hot water needs. You’ll need a larger unit for a family of four than for a single person. Second, consider the fuel type. Gas-powered tankless water heaters tend to be more efficient than electric models, but they may require a professional to install. Lastly, think about the space where you want to install the unit. Tankless water heaters can be installed almost anywhere, but you need to ensure that there is enough ventilation and space for the unit.
Are you tired of running out of hot water in the middle of a shower? Do you want to save money on your energy bills? If so, a tankless water heater could be the answer. But with so many options out there, it can be overwhelming to choose the right one. In this article, we’ll break down the key factors you need to consider before purchasing a tankless water heater. Plus, we’ll answer some common questions about these appliances to help you make an informed decision.
10 Best Indoor Tankless Water Heater Gas
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This product is ideal for providing instant hot water in small indoor spaces such as apartments, cabins, RVs, and boats.
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The product is ideal for indoor installation, has super high efficiency, propane fuel, and a water flow rate of up to 11 GPM.
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Ideal for instant and continuous hot water supply in indoor settings, powered by natural gas with high flow rate and heat output.
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Ideal for indoor installation to provide continuous hot water on demand using natural gas as the fuel source.
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Ideal for indoor installations and providing on-demand hot water with natural gas as the fuel source.
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Ideal for providing instant hot water to an entire house using propane gas, with energy-saving features and a digital display.
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Ideal for indoor hot water heating with high flow rate and natural gas fuel source.
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Ideal for indoor installation and providing instant hot water with a 3.6 GPM flow rate and 80,000 BTU power.
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This tankless water heater is ideal for residential use, provides multiple points of use and uses natural gas.
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The product is ideal for providing continuous hot water for large households or indoor use with natural gas fuel.
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1. Greatbear Mt10 Propane Water Heater.
Introducing the GREATBEAR propane tankless water heater, the perfect solution for anyone looking for an endless supply of hot water. This efficient water heater outputs 2.64 gallons of instant hot water per minute, making it the perfect addition to any apartment, farm, cabin, RV, barn, boat, or any other place where you need a constant supply of fresh hot water.
The propane water heater is designed to start up when water pressure is between 3.6-110 PSI, making it perfect for low water pressure situations. With a maximum power output of 68000btu/hour, you can expect decent hot water flow with this gas water heater. The best part is that you can get instant and endless fresh hot water out of it at any time you want, without the need for preheating.
The GREATBEAR MT10 propane water heater has a unique all-in-one design that features a setting knob for simple and advanced temperature control. Turning either knob anti-clockwise produces hotter water, while turning it clockwise produces cooler water, making it easy to get the perfect temperature for your needs.
Safety is paramount when it comes to GREATBEAR Appliances, and the MT10 water heater is no exception. Every piece of this water heater goes through multiple strict tests during manufacturing to ensure its safety. Additionally, it comes equipped with various protection devices, including Flame Failure Protection, Over Heating Protection, Anti-freezing Protection, Dry Combustion Protection, Low Water Flow Protection, and High Water Pressure Protection, ensuring that you and your family are always safe.
The propane water heater is ideal for indoor installation, and it comes with an exhaust pipe to remove harmful gases and protect your family. The package includes everything you need to set up the water heater system, and the installation process can be completed in just 15 minutes with the help of the instruction manual. Simply turn on the tap and enjoy instant and fresh hot water with the GREATBEAR MT10 propane water heater.
2. Rinnai Smart-Circ Gas Water Heater: Efficient & Powerful.
Introducing the Smart-Circ Intelligent Recirculation Tankless Gas Water Heater from Rinnai: a compact and efficient hot water solution perfect for any home. With its innovative Smart-Circ technology, this tankless water heater is designed to learn your water usage patterns and schedule water recirculation and pump accordingly for superior energy efficiency and convenience.
This indoor condensing tankless hot water heater is incredibly compact, measuring only the size of a small suitcase, yet can provide up to 11 gallons per minute, allowing up to 7 fixtures to run simultaneously without running out of hot water. The Smart-Circ Intelligent Recirculation Tankless Gas Water Heater also boasts a smart and durable design with multiple venting options to fit a wide array of spaces.
In addition, this water heater comes with a 15-year residential guarantee for the heat exchanger, 5-year guarantee for labor, and 1-year guarantee for parts, ensuring that you are getting a high-quality product that is built to last. Please note that professional installation is recommended for this tankless water heater. Rinnai provides a website where you can easily find a qualified technician in your area to install your new water heater.
To find the perfect tankless water heater for your home, Rinnai offers product guides, manuals, energy guides, warranty information, videos, and tables to help you make an informed decision. Be sure to check their Ground Water Temperature Map to see if this heater is optimal for your region.
Upgrade your home with the Smart-Circ Intelligent Recirculation Tankless Gas Water Heater from Rinnai today and enjoy endless hot water without sacrificing energy efficiency or convenience.
3. Fogatti Instagas: Instant Hot Water Heater.
The FOGATTI tankless water heater is a compact and efficient option for those seeking an upgrade from traditional tank water heaters. Despite its small size, this system produces approximately 4.0 gallons per minute of hot water through 90,000 BTU, making it suitable for both bathroom and kitchen hot water needs. One of the standout features of this water heater is its ability to provide a fast and endless supply of hot water. The heat exchanger quickly heats the water to a maximum of 140℉ in a relatively short amount of time, ensuring that users don't have to wait for the water temperature to heat up slowly like with traditional tank water heaters.
In addition to its impressive performance, the FOGATTI tankless water heater also offers stable and comfortable temperature control. Thanks to the precise calculation and control of the heating power 1000/s by the chip, the temperature difference of the water can be accurately controlled within ±2°F. This ensures that users can enjoy a consistent and comfortable temperature for the duration of their hot water usage.
Installation of the FOGATTI tankless water heater is also a breeze, with most tank water heater exhaust vents, water, and gas pipes being universally compatible. This means that upgrading to a tankless system requires only a simple re-layout, and the compact size of this unit makes it easy to install in new homes. Of course, it is recommended that all installations be carried out in accordance with local building and plumbing codes by licensed professionals.
When it comes to quality and service, the FOGATTI tankless water heater does not disappoint. It has been certified by CSA in both the USA and Canada, ensuring superior safety and durability using the world's most advanced technology. Furthermore, FOGATTI provides an impressive 5-year warranty on the heat exchanger and a 2-year warranty on other parts, giving users peace of mind knowing that their investment is protected.
4. Rinnai Tankless Water Heater: 5.3 Gpm, Indoor Installation.
Experience endless hot water and smart energy savings with Rinnai's improved design of its tankless gas water heater. This innovative water heater only heats water when necessary, conserving energy and saving you money on energy bills.
The compact size of this non-condensing indoor tankless hot water heater is only about the size of a small suitcase, yet it can provide up to 5.3 gallons per minute, allowing for up to 5 fixtures to be used simultaneously. Its smart, durable design allows it to fit into a wide array of spaces, making it a versatile option for any home.
Rinnai's tankless gas water heater provides peace of mind with its 15-year residential guarantee for heat exchanger, 5-year residential guarantee for labor, and 1-year residential guarantee for parts. The LED screen provides service reminders and error codes, allowing for easy maintenance.
For even more convenience, the Controlr module allows for WiFi control (not included), allowing you to easily control your water heater from your smartphone or tablet. For professional installation, Rinnai recommends visiting their website to locate a qualified technician in your area to ensure proper installation and optimal performance of your tankless water heater.
To find the right Rinnai tankless water heater for your home, browse their product guides, manuals, energy guide, warranty information, videos, and tables. You can also check their Ground Water Temperature Map to see if this heater is optimal for your region.
5. Rinnai Rl75in Tankless Hot Water Heater, 7.5 Gpm, Natural Gas, Indoor Installation
The Rinnai tankless hot water heater is an original design featuring Circ-Logic technology that matches the user's recirculation habits. For those seeking the latest in non-condensing technology that streamlines installation and maintenance, the RE160iN model is recommended.
This compact gas water heater is only the size of a small suitcase, making it ideal for a variety of spaces. Despite its size, it can supply up to 7.5 gallons per minute, supporting up to five fixtures at once. This guarantees that you never run out of hot water, ensuring maximum convenience.
The Rinnai tankless hot water heater is built to last, boasting a smart and durable design. It comes with a 12-, 5-, and 1-year residential guarantee, as well as a 5-, 5-, and 1-year commercial factory warranty for its heat exchanger, labor, and parts, respectively. Additionally, the Controlr module allows for WiFi control, although it must be purchased separately.
It is recommended to have a qualified technician install the water heater. Rinnai provides a "Find a Rinnai PRO" page on their website for locating a professional near you. It is strongly advised against installing the water heater without the assistance of a professional.
Finding the right Rinnai tankless water heater for your home is easy with their product guides, manuals, energy guide, warranty information, videos, and tables. Additionally, Rinnai's Ground Water Temperature Map can help you determine if this particular model is optimal for your region.
6. Pro Gas Tankless Water Heater: Instant, Efficient
The TCFUNDY Tankless Water Heater is a compact and energy-efficient solution that provides hot water on demand. With a 16L tank, it takes up less space than traditional water heaters and features a sleek LCD screen with a digital temperature display and touch screen control. Three modes – eco mode, common mode, and tub mode – allow users to choose the best option for their needs.
This on-demand instant water heater operates on propane gas and delivers a remarkable 4.23 gallons per minute of endless hot water. Gone are the days of waiting for hot water; this product provides instant hot water for families, homes, cabins, and apartments.
The TCFUNDY Tankless Water Heater is designed with thermostatic and energy-saving features. The built-in high-precision thermostat ensures a constant temperature, while the self-modulating temperature technology only heats water when it is being used, saving energy. With a high thermal efficiency of up to 90%, users can enjoy hot water while maintaining energy efficiency.
Safety is paramount when it comes to using any water heater, and the TCFUNDY Tankless Water Heater is built with safety features in mind. The premium oxygen-free copper heat exchanger ensures long lifespan, and the heater automatically powers off when water is turned off to prevent overheating. Additionally, flame-out protection, anti-freezing protection (manual drainage needed via water relief valve), and air flow pressure switch protection are included to ensure safety.
Installation of this tankless water heater is easy and hassle-free. The product comes with an 18.9“x2.36" horizontal vent pipe for efficient ventilation and a showerhead. The minimum activation rate is only 0.66 GPM, and the low water pressure to start ensures that users of higher floors can have a pleasant shower experience. With a minimum water pressure of 2.9 PSI, the TCFUNDY Tankless Water Heater is an excellent option for those looking for an efficient and safe water heating solution.
7. Rinnai Rucs75in Tankless Hot Water Heater, 7.5 Gpm, Natural Gas, Indoor Installation
Looking for a reliable and efficient hot water system? Look no further than the Endless Hot Water system. This compact and durable system is designed to provide unlimited hot water flow throughout your house, ensuring you never run out of hot water again.
With its space-saving design, this system is not only energy-efficient but also saves valuable space in your home. The system heats water only when necessary, conserving energy and reducing your utility bills.
The Endless Hot Water system also boasts a high-performance 7.5 GPM hot water flow rate for a powerful and constant stream of hot water. This ensures that you can enjoy a hot shower or bath without any interruptions or fluctuations in water temperature.
Installation of the Endless Hot Water system is easy and hassle-free. The system comes with multiple venting options, including PVC/CPVC using the Ubbink Concentric to Twin Pipe adaptor, allowing for easy installation. Professional installation is recommended to ensure optimal performance and safety.
The Endless Hot Water system is also guaranteed to last, with a 12-, 5-, and 1-year residential factory warranty for the heat exchanger, parts, and labor, respectively. This gives you peace of mind knowing that your investment is protected.
8. Mizudo Instant Hot Water Heater: Natural Gas Tankless!
Introducing the Instant Hot Water Heater – a tankless water heating solution that provides endless hot water on demand for 2-3 water points. With a 3.6 GPM hot water flow and precise temperature control, this heater ensures a comfortable bathing experience without any water temperature sandwich.
The Instant Hot Water Heater boasts a premium design and durable build, with an oxygen-free copper water tank that reduces heat loss for high efficiency and longevity. Additionally, its compact design saves over 50% of available space compared to traditional tank water heaters.
At our company, we prioritize quality service for our customers. If you encounter any product quality problems, you can easily reach us by phone, email, or message, and we will provide service according to our warranty policy.
Upgrade your home's hot water heating system with the Instant Hot Water Heater for a reliable and efficient solution that provides endless hot water on demand.
9. Efficient Natural Gas Tankless Water Heater
This product is the perfect solution for those who prioritize safety and efficiency in their daily activities. One of the main features of this device is its CSA certification, which guarantees its quality and durability for users.
Equipped with a cutting-edge LED touch screen, this computerized safety device is user-friendly and easy to navigate. With flow activation, the device can quickly detect changes in water flow, enabling it to deliver hot water promptly.
The oxygen-free copper heat exchanger is designed to ensure maximum heat transfer and corrosion resistance, which means that the device will last longer and provide more reliable performance. The stainless steel venting exhaust is another component that enhances the product's durability and longevity.
For added safety, the device comes with anti-freeze protection, which prevents damage to the unit in cold temperatures. Additionally, this product is UL listed, which means that it has been rigorously tested and meets the highest safety standards.
It is important to note that the unit's performance may be affected if installed above 2000 feet elevation from sea level. Therefore, it is recommended to follow the manufacturer's guidelines when installing the device.
10. Gas Tankless Hot Water System For Homes
The gas water heater features a space-saving design that effectively conserves energy. It only heats water when needed, optimizing energy consumption. In addition, it boasts an impressive hot water flow rate of up to 5.28 GPM, ensuring a constant and powerful stream of hot water for the entire household.
Installation of the 120 volt tankless water heater is a breeze, thanks to its convenient and user-friendly design. It is compatible with Camplux customized vent pipe CP-70, which enhances the ventilation performance for indoor use.
The gas water heater is designed to maximize thermal efficiency, with a certified balanced combustion design and a v-type stainless steel burner. This results in a high heating efficiency of up to 89.98%, ensuring that every drop of fuel is utilized, and minimizing wastage.
For those living in high-rise buildings, the electric hot water heater is ideal, with its 90°wind isolation design. This feature prevents backflow wind in high floors, ensuring that the hot water supply is not disrupted.
Best Indoor Tankless Water Heater Gas FAQs
Can an indoor tankless water heater gas be controlled remotely?
Yes, indoor tankless water heaters that are powered by natural gas or propane can be controlled remotely. Many modern tankless water heaters come equipped with Wi-Fi connectivity and smartphone apps that allow you to adjust the temperature and settings of your water heater from anywhere. With remote control, you can turn the water heater on or off, adjust the temperature, and even receive alerts if there is an issue with the unit.
Remote control of your indoor tankless water heater can be especially convenient if you are away from home for an extended period of time and want to conserve energy by turning the unit off. You can also use remote control to preheat your water before you arrive home, ensuring that hot water is available when you need it. It is important to note that not all tankless water heaters come with remote control capabilities, so be sure to check the specifications of any unit you are considering purchasing.
Can an indoor tankless water heater gas be used for multiple applications, such as heating and cooking?
No, an indoor tankless water heater gas is designed specifically for providing hot water on demand for domestic purposes. It is not recommended to use it for multiple applications such as heating and cooking. The unit is designed to heat water only and is not equipped to handle the demands of other appliances. Attempting to use the indoor tankless water heater gas for anything other than its intended purpose could result in damage to the unit, as well as safety hazards. It is important to always use appliances according to their intended use and to follow the manufacturer's instructions for installation, use, and maintenance. If you are looking for an appliance that can be used for heating and cooking, there are other options available on the market that are specifically designed for these purposes.
How easy is it to maintain an indoor tankless water heater gas?
Maintaining an indoor tankless water heater gas is relatively easy. However, it is important to note that regular maintenance is necessary to ensure that the heater operates efficiently and safely. One of the main advantages of a tankless water heater is that it requires less maintenance compared to traditional tank water heaters.
The maintenance of a tankless water heater typically involves cleaning the air intake filter, flushing the unit to remove mineral buildup, and checking the igniter and gas connections for any leaks. The frequency of maintenance will depend on how hard the water is in your area and how often the heater is used.
It is recommended to have a professional plumber perform annual maintenance on your tankless water heater to ensure that it is operating safely and efficiently. In addition, it is important to follow the manufacturer's instructions for maintenance and use of the heater to avoid any potential safety hazards.
Overall, if you perform regular maintenance and follow the manufacturer's instructions, maintaining an indoor tankless water heater gas should be relatively easy.
How much does it cost to install an indoor tankless water heater gas?
The cost of installing an indoor tankless water heater gas can vary depending on several factors. The price range can be anywhere from $1,000 to $3,000, with the average cost being around $1,500. Some of the factors that can impact the cost of installation include the brand and model of the unit, the size of the unit, the complexity of the installation, and the location of the installation.
If you opt for a higher-end brand or model, the cost of installation will be higher. Additionally, if your home requires significant modifications to accommodate the unit, such as new gas lines or venting, the cost of installation will be higher. On the other hand, if your home is already equipped with the necessary infrastructure, the installation cost will likely be lower.
To get an accurate estimate for the installation of an indoor tankless water heater gas in your home, it's best to consult with a licensed and experienced plumber or HVAC technician. They can assess your home's needs and provide you with a detailed quote for the installation.
What is the best indoor tankless water heater gas for a small apartment?
When it comes to finding the best indoor tankless water heater gas for a small apartment, there are a few factors to consider. One important factor is the size of the unit. For a small apartment, a compact unit that can fit easily in a closet or under a sink may be ideal. Another factor is the energy efficiency of the unit, which can help save on energy costs in the long run.
One option to consider is the Rinnai V Series HE Tankless Hot Water Heater. This unit is compact and energy efficient, making it a good choice for small apartments. It also has a high flow rate, providing plenty of hot water for multiple appliances or fixtures at once. Another option is the Takagi T-KJr2-IN-NG Indoor Tankless Water Heater, which is also compact and energy efficient. It has a lower flow rate than the Rinnai, but is still capable of providing hot water for a small apartment.
Ultimately, the best indoor tankless water heater gas for a small apartment will depend on your specific needs and budget. It may be helpful to consult with a professional plumber or HVAC technician to determine the best option for your home.
What is the lifespan of an indoor tankless water heater gas?
The lifespan of an indoor tankless water heater gas typically ranges from 10 to 20 years. However, this can vary based on various factors such as usage, maintenance, and water quality. Regular maintenance and cleaning can help increase the lifespan of a tankless water heater. It is also important to note that the warranty for tankless water heaters can vary, with some manufacturers offering warranties for up to 15 years. It is recommended to consult with a professional plumber or the manufacturer's guidelines to ensure proper maintenance and to know when it is time to replace the unit.
What is the maximum flow rate of an indoor tankless water heater gas?
The maximum flow rate of an indoor tankless water heater gas can vary depending on the specific model and brand. Typically, indoor tankless water heaters can provide a flow rate of around 5-9 gallons per minute, which is sufficient for most households. However, some high-end models can provide a higher flow rate of up to 11 gallons per minute. It's important to note that the flow rate may also depend on the temperature rise required, which is the difference between the incoming cold water temperature and the desired hot water temperature. It's recommended to consult the manufacturer's specifications to determine the maximum flow rate of a specific indoor tankless water heater gas model. Additionally, it's important to ensure that the gas supply and venting system are appropriate for the chosen model to ensure safe and efficient operation.
What is the most energy-efficient indoor tankless water heater gas?
The most energy-efficient indoor tankless water heater gas is the one that has a high Energy Factor (EF) rating. EF is a measure of the water heater's efficiency in converting energy into hot water. The higher the EF rating, the more efficient the water heater is.
One of the most energy-efficient indoor tankless water heater gas models is the Rinnai RU199iN. It has an EF rating of 0.96, which means it can convert 96% of the energy it uses into hot water. Another option is the Navien NPE-240A tankless water heater, which has an EF rating of 0.97.
It's important to note that the most energy-efficient indoor tankless water heater gas may not necessarily be the best option for every household. Factors such as the size of the household, hot water usage patterns, and available gas supply should also be considered when choosing a tankless water heater. Consulting with a professional plumber or HVAC technician can help determine the best option for your specific needs.
What is the warranty on an indoor tankless water heater gas?
The warranty on an indoor tankless water heater gas can vary depending on the manufacturer and the model of the unit. Generally, most indoor tankless water heaters come with a warranty that covers defects in materials and workmanship for a specific period of time, typically ranging from 5 to 15 years. However, it is important to check the warranty information provided by the manufacturer to ensure that you understand the terms and conditions of the warranty. Some warranties may require professional installation, regular maintenance, or specific usage requirements to remain valid. It is also important to note that warranties may not cover damage caused by improper installation, misuse, or neglect. To ensure that you have the best warranty coverage for your indoor tankless water heater gas, it is recommended to purchase from a reputable manufacturer and have the unit installed by a licensed professional.
What safety features should I look for in an indoor tankless water heater gas?
When it comes to indoor tankless water heater gas, safety should always be a top priority. Here are some important safety features to look for:
1. Flame Failure Protection: This is a feature that automatically shuts off the gas supply if the flame goes out. This prevents gas leaks and potential fire hazards.
2. Overheat Protection: This feature monitors the temperature of the unit and automatically turns it off if it gets too hot. This prevents the unit from overheating and potentially causing a fire.
3. Exhaust Gas Monitoring: This feature ensures that the exhaust gases produced by the unit are properly vented outside. This prevents the buildup of dangerous gases like carbon monoxide inside your home.
4. Freeze Protection: This feature prevents the unit from freezing in cold temperatures. This is important as frozen pipes can cause damage to the unit and potentially lead to leaks.
5. Child Safety Lock: This feature prevents children from accidentally turning on the unit and potentially causing harm.
It is important to ensure that the indoor tankless water heater gas you choose has these safety features to keep you and your family safe.