Best Indoor Tankless Water Heater (2024 Update)
If you’re looking for an efficient and cost-effective way to heat water in your home, then a tankless water heater may be the answer. Rather than storing hot water in a tank, a tankless water heater quickly heats water on demand. This not only saves space, but it can also reduce energy costs and provide a continuous supply of hot water. However, with so many options on the market, it can be overwhelming to choose the best indoor tankless water heater.
Before making a purchase, it's important to consider factors such as the size of your household, the climate in your area, and the peak demand for hot water in your home. It's also important to consider the fuel source and required ventilation for your tankless water heater. By taking these factors into account, you can ensure that you choose a tankless water heater that meets your specific needs.
Are you tired of running out of hot water mid-shower? Do you want to save money on your energy bills? Are you interested in a space-saving solution for your home? If you answered yes to any of these questions, then a tankless water heater may be right for you. Keep reading to discover the best indoor tankless water heater options on the market that can provide you with endless hot water and save you money in the long run.
10 Best Indoor Tankless Water Heater
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Ideal for providing instant and continuous hot water in indoor spaces using natural gas as a fuel source.
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Ideal for providing hot water efficiently and continuously in indoor settings using natural gas as fuel.
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This tankless water heater is ideal for indoor use with natural gas and high efficiency, providing 8 gallons per minute.
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This product is ideal for providing hot water in indoor spaces using natural gas with high efficiency and a large flow rate.
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Ideal for providing hot water through natural gas, with low NOx emissions and direct venting.
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This product is ideal for providing on-demand hot water to indoor locations using liquid propane fuel.
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It is ideal for providing hot water on demand and efficient indoor installation using natural gas for residential or commercial use.
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This product is ideal for providing constant hot water in RVs, kitchens, and indoor areas with a remote control feature.
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Ideal for providing hot water on demand using natural gas as the fuel source.
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The product is ideal for providing hot water efficiently and economically in both residential and commercial settings.
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1. Bosch C 1210 Es Ng 225,000 Btu Natural Gas Indoor Condensing Tankless Water Heater
This product is proudly manufactured in China and is identified by the model number C 1210 ES NG. The item package dimensions measure 18.0 inches in length, 18.0 inches in width, and 21.0 inches in height, while the item package weight is 3.01 lb. These parameters provide helpful information for customers who want to ensure that the product will fit their desired space and meet their expectations for weight. With these specifications, customers can make an informed decision about whether this product is the right fit for their needs.
2. Takagi Tankless Water Heater: High Efficiency 6.6 Gpm
Looking for a water heater that can provide unlimited hot water while conserving energy and saving space? Look no further than this state-of-the-art unit!
With its on-demand usage, this water heater ensures that you'll never run out of hot water, no matter how long your shower or how many dishes you need to wash. And thanks to its compact design, it won't take up too much space in your home.
But that's not all – this water heater is also incredibly energy efficient, helping you save money on your utility bills while reducing your carbon footprint. And with computerized safety features and no pilot light to worry about, you can rest easy knowing that your home and family are safe.
In fact, this water heater is so safe and efficient that it meets the rigorous standards set by the 2012 SCAQMD Rule 1146.2 for Ultra-Low NOx Emissions. So not only will you enjoy endless hot water and energy savings, you'll also be doing your part for the environment.
Don't settle for a traditional water heater that wastes energy and takes up valuable space in your home. Upgrade to this cutting-edge unit today and experience the benefits of endless hot water, energy conservation, and peace of mind!
3. Efficient Takagi Tankless Water Heater
Looking for a compact and energy-efficient water heater that can provide endless hot water on-demand? Look no further than this computerized tankless water heater. With its compact design and on-demand usage, this unit is perfect for homes with limited space or those looking to conserve energy.
One of the standout features of this water heater is its computerized safety features, which help to prevent accidents and ensure peace of mind. Plus, with no pilot light to worry about, you can rest easy knowing that your home is safe and secure.
This water heater is also environmentally friendly, satisfying the 2012 SCAQMD Rule 1146.2 for Ultra-Low NOx Emissions. This means that it produces fewer harmful emissions than other water heaters on the market, making it a great choice for those who want to reduce their carbon footprint.
In terms of dimensions, this water heater measures 22.5"H x 17.75"W x 10.75"D, making it a great choice for small apartments, condos, or homes with limited space. Whether you're looking to save on your energy bill or simply want a reliable and efficient water heater, this unit is sure to meet your needs.
4. Efficient Gas Tankless Water Heater – Takagi T-H3
The product being described is a tankless water heater that offers several benefits to its users. It provides endless hot water on-demand, making it a reliable and convenient source of hot water. The compact size of the heater makes it space-saving and ideal for use in small areas.
One of the most significant advantages of the water heater is its energy conservation feature. It uses computerized safety features that eliminate the need for a pilot light, making it more energy-efficient. Additionally, the safety features of the heater are top-notch. It has freeze, overheat, surge protection, and troubleshooting diagnostic codes to ensure the safety of its users.
Moreover, the tankless water heater meets the 2012 SCAQMD Rule 1146.2 for Ultra-Low NOx emissions, making it an environmentally friendly option. The primary heat exchanger of the heater utilizes commercial-grade copper alloy, which provides 25 times better heat transfer than stainless steel.
The heater comes equipped with integrated controls and a power cord as standard features. The controls are computerized, making it easy to use and operate the device. The power cord ensures that the heater can be plugged into any standard electrical outlet without the need for additional wiring.
5. Rheem Rtg-84dvln 8.4 Gpm Low Nox Direct Vent Tankless Natural Gas Water Heater
Looking for a reliable, energy-efficient, and cost-saving hot water solution? Look no further than this tankless gas water heater! With this unit, you can enjoy continuous hot water, even with back-to-back showers, so you'll never have to worry about running out. Plus, it's designed to reduce energy consumption by automatically adjusting the amount of energy required to heat the water you need.
This tankless gas water heater is perfect for indoor use and offers an easy-to-use, convenient control panel that allows you to easily adjust the water temperature to your preference, ranging from 85˚F–140˚F. And because it's tankless, it takes up less space than traditional water heaters, making it a great choice for homes with limited space.
Not only is this tankless gas water heater easy to install, but it's also designed to last for years with minimal maintenance. So, if you're looking for an energy-efficient and cost-saving hot water solution that will provide you with endless hot water, this tankless gas water heater is the perfect choice for you.
6. Noritz Nrc66dvlp Indoor Condensing Direct Tankless Hot Water Heater, 6.6 Gpm – Liquid Propane
The product on offer boasts of providing an endless supply of hot water, making it an ideal choice for households that require consistent hot water for prolonged periods. Moreover, it can be vented using Schedule 40 PVC Pipe and Fitting, adding to its ease of installation. The product is designed with high efficiency, ensuring that it operates optimally while consuming minimal energy, making it an eco-friendly option. Additionally, the product's Low Nox feature ensures that it emits low levels of harmful gases, contributing to a safer and cleaner environment.
Furthermore, the product comes with a remote thermostat and a 6' power cord, making it convenient to control and operate. The remote thermostat allows for easy temperature adjustments, ensuring that the water is heated to the desired temperature, while the 6' power cord ensures that it can be placed at a convenient distance from the power source.
7. Rinnai V75in Tankless Hot Water Heater, 7.5 Gpm, Natural Gas, Indoor Installation
Introducing the Rinnai Tankless Hot Water Heater, the latest in non-condensing technology that is designed to conserve energy and provide a cleaner layout for easier service and installation. The RE180iN model is the perfect solution for those who want to save energy and ensure they never run out of hot water.
The tankless hot water heater is compact and only the size of a small suitcase, making it a great fit for a wide variety of spaces. Despite its small size, it can provide up to 7.5 gallons per minute, which is enough to run up to 5 fixtures at once. This means you can enjoy hot water without worrying about running out, even during peak usage times.
The Rinnai Tankless Hot Water Heater is designed to be smart and durable. It comes with enhanced scale detection that helps prevent serious, long-term damage to the unit, which can extend its lifespan. Additionally, it includes a 15-year warranty for the heat exchanger, a 5-year warranty for labor, and a 1-year warranty for parts, which gives you peace of mind knowing that your investment is protected. If you want to control the heater via WiFi, you can purchase the Controlr module separately.
It is recommended that a qualified technician install your Rinnai Tankless Hot Water Heater. You can visit the Find a Rinnai PRO page on the Rinnai website to locate a qualified technician in your area. This ensures that your heater is installed properly and safely.
To find the right Rinnai Tankless Hot Water Heater for your home, you can consult the product guides, manuals, energy guide, and warranty information available on the Rinnai website. You can also check the Ground Water Temperature Map to determine if this heater is optimal for your region.
8. Instant Hot Water Heater With Remote Control
Introducing the Instant Hot Water Heater, an innovative and efficient way to supply hot water throughout your home. This tankless water heater is designed to provide hot or warm water instantly, without the need for a storage tank.
With a water temperature range of 30-55℃, this water heater is perfect for any household. The voltage required for this unit is AC 110V and wire requirements are 6mm² Copper wire (#9 awg wire). It is important to note that the trip switch must be at least 63A, otherwise the unit will trip. The applicable water pressure is 0.04-1.2Mpa.
The outlet water temperature is dependent on the inlet water temperature and water flow. The larger the water flow, the lower the temperature, and the smaller the water flow, the higher the temperature. This water heater boasts a 5.5KW heating system that is constantly ready to supply hot or warm water at a preset temperature. It requires a 63A Circuit Breaker and 1/2"NPT water connections. The temperature range of this unit is from 86°F- 131°F.
This sleek tankless water heater is lightweight and compact, measuring at 8.8"W×8.2"H×3"D, similar to the size of an oatmeal box. It can be mounted horizontally, vertically, or obliquely, making it ideal for installation in the kitchen, bar, school, hospital, community, and hair salon.
The Instant Hot Water Heater is designed to be self-modulating, automatically adjusting the power based on the change of inlet water flow and temperature. This feature optimizes the energy efficiency of the unit, saving considerable electric charge.
The unit features a touch control panel and digital temperature display, making it easy to set your desired temperature. The water heater is lightweight and easy to install, vertically facing up or down. Simply open the tap to start the unit heating with an activation flow rate of 0.5GPM. Then turn on the tap and let the smart unit do the rest, providing you with instant hot water at your desired temperature.
9. Bosch 830 Es Ng Therm Tankless Water Heater, Natural Gas
The product being reviewed boasts impressive specifications that make it a top pick for anyone in need of a powerful water heater. With a maximum input of 175,000 BTU, this unit is capable of providing hot water at an impressive rate. It also has a thermal efficiency rating of 83% or more, ensuring that energy is being used efficiently and effectively.
In addition to its high performance, this water heater can deliver 8.3 gallons of hot water per minute with just a 35F degree rise. This means that it can easily meet the hot water needs of a small to medium-sized household. The unit features an electronic ignition system and a patented burner design that work together to ensure reliable and efficient operation.
One of the standout features of this water heater is its ability to vent either vertically or horizontally, making it a versatile option for a variety of installation scenarios. Additionally, it can be vented with either a 3" or 4" stainless steel vent, giving homeowners more options for installation.
Best Indoor Tankless Water Heater FAQs
Are there any specific brands that are known for producing the best indoor tankless water heaters?
Yes, there are several brands that are known for producing the best indoor tankless water heaters. One of the top brands is Rinnai, which has been in the industry for over 100 years and is known for its high-quality and efficient tankless water heaters. Another well-regarded brand is Takagi, which has been producing tankless water heaters for over 60 years and is known for its innovative technology and reliable products. Navien is another popular brand that is known for its energy-efficient and user-friendly tankless water heaters. Other notable brands include Rheem, Noritz, and Bosch. When choosing a tankless water heater, it's important to consider factors such as the size of your home, your hot water needs, and your budget, in addition to the brand's reputation and product features. Consulting with a professional plumber or HVAC technician can also be helpful in selecting the best indoor tankless water heater for your specific needs.
Can an indoor tankless water heater be used for large households with high demand for hot water?
While indoor tankless water heaters are a great option for homes with high hot water demand, they may not be suitable for extremely large households. The capacity of an indoor tankless water heater is measured in gallons per minute (GPM), and the higher the GPM rating, the more hot water it can provide. However, even the highest-rated indoor tankless water heaters may not be able to keep up with the demands of a very large household.
In such cases, it may be necessary to consider an outdoor tankless water heater or a traditional tank water heater. Outdoor tankless water heaters can provide higher GPM ratings and are often a good option for large households with high hot water demand. Traditional tank water heaters, while less efficient, can also provide a large volume of hot water and may be a more cost-effective option for some households.
Ultimately, the suitability of an indoor tankless water heater for a specific household will depend on factors such as the number of occupants, the number of bathrooms, and hot water usage patterns. It is important to consult with a professional plumber or HVAC technician to determine the best water heating solution for your home.
How do I choose the right size indoor tankless water heater for my home?
Choosing the right size indoor tankless water heater for your home can be a bit of a challenge, but there are a few key factors to consider. The most important factor is the size of your home and the number of people who will be using hot water on a regular basis. You will need to determine your home's peak demand for hot water, which is the maximum amount of hot water that you will need at any given time.
To calculate your peak demand, you should consider the number of bathrooms in your home, the number of people who live there, and the type of appliances that use hot water. For example, a family of four with two bathrooms and a washing machine will need a higher flow rate than a single person living in a studio apartment.
Once you have determined your peak demand, you should choose a water heater with a flow rate that can meet that demand. You should also consider the efficiency of the water heater and the fuel source that you will be using. Gas-fired tankless water heaters are generally more efficient than electric models, but they may not be the best choice if you do not have access to natural gas.
Overall, choosing the right size indoor tankless water heater requires careful consideration of your home's hot water needs, as well as your budget and available fuel sources.
How energy-efficient are indoor tankless water heaters compared to traditional water heaters?
Indoor tankless water heaters are highly energy-efficient when compared to traditional water heaters. The primary reason for this is that tankless water heaters only heat water on demand, whereas traditional water heaters store and constantly reheat water in a tank. This means that tankless water heaters do not have standby heat loss, which is the energy lost from the stored hot water in traditional water heaters.
According to the U.S. Department of Energy, tankless water heaters are up to 34% more energy-efficient than traditional water heaters for homes that use 41 gallons or less of hot water per day. For homes that use more hot water, the energy savings are still significant, although not as high as 34%.
Another advantage of indoor tankless water heaters is that they have a longer lifespan than traditional water heaters. They can last up to 20 years, while traditional water heaters typically last for 10-15 years. This means that you can save money on replacement costs in the long run.
Overall, if you're looking for an energy-efficient and cost-effective option for your home's hot water needs, an indoor tankless water heater is a great choice.
How much does it cost to install an indoor tankless water heater?
The cost of installing an indoor tankless water heater varies depending on a few factors. The cost of the unit itself can range from a few hundred dollars to several thousand dollars depending on the brand and model. Additionally, the cost of installation will depend on the complexity of the installation and the location of the heater. If the installation requires significant modifications to the plumbing or electrical systems in your home, the cost of installation will be higher.
Typically, the average cost of installing an indoor tankless water heater ranges from $1,500 to $3,000. However, this cost can vary depending on your specific needs and the type of unit you choose. It's always best to consult with a licensed plumber or HVAC technician to get an accurate estimate for your unique situation.
Overall, while the upfront cost of a tankless water heater may be higher than a traditional tank-style unit, the long-term energy savings and increased efficiency can make it a worthwhile investment for many homeowners.
What are the benefits of installing an indoor tankless water heater?
Installing an indoor tankless water heater can offer numerous benefits to homeowners. One of the primary advantages is energy efficiency. Tankless water heaters heat water on demand, which means they only use energy when hot water is needed, unlike traditional water heaters that constantly heat a tank of water. This can result in lower energy costs and higher savings on utility bills.
Another benefit is space-saving. Tankless water heaters are smaller and more compact than traditional water heaters, which frees up valuable space in your home. They can be installed in various locations, such as closets, attics, or basements, and even on walls, making them an ideal choice for smaller homes or apartments.
Tankless water heaters also have a longer lifespan than traditional water heaters. They typically have a lifespan of up to 20 years, compared to the average lifespan of 10-15 years for traditional water heaters. This means that homeowners can save money in the long term by not having to replace their water heater as frequently.
Finally, tankless water heaters provide endless hot water. Unlike traditional water heaters that can run out of hot water after a certain amount of usage, tankless water heaters provide hot water on demand, so you can enjoy hot showers, baths, and endless hot water for your household needs.
What are the safety features of indoor tankless water heaters?
Indoor tankless water heaters are designed with a range of safety features to ensure that they operate safely and efficiently. One of the key safety features of indoor tankless water heaters is the automatic shut-off valve. This valve is designed to turn off the flow of gas or electricity to the unit in the event of a malfunction or if the unit overheats. This helps to prevent the risk of explosions or fires.
Another important safety feature of indoor tankless water heaters is the flame sensor. This sensor detects the presence of a flame and helps to prevent gas leaks or other hazards. In addition, many indoor tankless water heaters are equipped with a temperature sensor that monitors the temperature of the water and helps to prevent scalding.
Finally, indoor tankless water heaters are often designed with a range of safety switches and sensors that can detect issues with the unit and alert the user to potential problems. This can include issues such as low water pressure, high water pressure, or a blocked vent.
Overall, indoor tankless water heaters are designed with a range of safety features to ensure that they operate safely and efficiently, providing hot water on demand without posing a risk to the user.
What are the top-rated indoor tankless water heaters on the market?
There are several top-rated indoor tankless water heaters on the market, but some stand out above the rest. The Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater is one of the best options available. It has a high efficiency rating and can provide endless hot water for up to five plumbing and appliance outlets simultaneously. Another great option is the Takagi T-H3-DV-N Condensing High-Efficiency Natural Gas Indoor Tankless Water Heater. It has a compact design and can deliver up to 10 gallons of hot water per minute. The Noritz NRC661-DV-NG Indoor Condensing Direct Tankless Hot Water Heater is also highly rated, with a high efficiency rating and a compact design that allows for easy installation. Ultimately, the best indoor tankless water heater for your needs will depend on factors such as your household size, hot water usage, and budget.
What is the average lifespan of an indoor tankless water heater?
The lifespan of an indoor tankless water heater depends on various factors such as the quality of the unit, frequency of maintenance and usage, and water hardness. Generally, a good quality indoor tankless water heater can last up to 20 years with proper maintenance and care. However, some units may last shorter or longer than this depending on the aforementioned factors.
It's essential to perform regular maintenance on the unit to ensure it runs efficiently and lasts longer. This includes flushing the system to remove mineral buildup, cleaning the filters, and checking the heating elements. Additionally, it's important to hire a professional plumber to install the unit correctly to avoid any damage to the system.
In conclusion, the average lifespan of an indoor tankless water heater is around 20 years, but it can vary depending on several factors. Proper maintenance and care can help prolong the life of the unit and ensure it runs efficiently for years to come.
What type of maintenance is required for an indoor tankless water heater?
Indoor tankless water heaters require some maintenance to keep them running efficiently and prolong their lifespan. The most important maintenance task is regular cleaning of the unit's inlet filter. This filter prevents debris from entering the heater and clogging the heat exchanger. If the filter becomes clogged, it can reduce the water flow and cause the heater to shut down.
To clean the inlet filter, turn off the water and gas supply to the heater and unscrew the filter cover. Remove the filter and rinse it with water to remove any debris. If the filter is very dirty, it can be soaked in vinegar for a few hours to loosen the buildup. Once the filter is clean, reattach it and turn the water and gas supply back on.
It's also important to flush the heater's heat exchanger periodically to remove any mineral buildup. This can be done by connecting a descaling solution to the heater and running it through the unit for the recommended time.
Finally, it's a good idea to have the unit professionally serviced every year to ensure that it's running at peak efficiency and to identify any potential problems before they become major issues.
