Having a constant supply of hot water is a blessing sent by God. Thanks to the novel technologies that have gone the farthest to make it possible for humankind. You can have access to hot if you have a tankless water heater installed at your homes.
A tankless water heater provides a list of benefits and is a useful commodity. They have gained a lot of popularity due to their low energy consumption. They are equipped with revolutionary technologies that help in conserving water to greater extents.
These instant water heaters are also popular for their less energy consumption.
They remain off when not in use. They are equipped with flow sensors that activate the water heater as you open the tap. It then takes the water and passes it through a copper heat exchanger.
Moreover, it maintains the temperature of the water with the help of a negative feedback loop. As the name suggests, these water heaters are tankless, so the hot water isn’t stored.
Best Tankless Water Heaters: Top Picks
Listed below is the compilation of the best tankless water heaters that have some amazing features.
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BEST FOR RVs
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Let’s get started with the review of each of them one by one!
1. Bosch Electric Mini-Tank – Best Overall
The next product from our best tankless water heaters review list has to be the Bosch 110 Volt Tankless Water heater with some amazing features.
Bosch is a well-esteemed company that is very well known for manufacturing industry-leading products. It is a point of use water heater that makes hot water readily available. It comes with a mini tank that can be fixed under the sink for added convenience.
The mini tank can easily accommodate 2.5 gallons at a time, which makes it ideal for kitchens.
This water heating unit is elementary to install and comes with a temperature relief valve for added convenience.
Bosch water heater uses top quality material for its construction; therefore, its durability is promising. It is also made with ECO-friendly material that makes it a safe water heating unit. It consists of a CFC-free foam coating that provides insulation and makes it an energy-efficient water heater.
In addition to that, the water tank is lined with glass to increase the product’s durability. Moreover, this product’s design is super classy and compact to take up less space where you install it. It is also an extremely lightweight water heater that can be mounted on the wall to provide free space on the floor. It is made keeping elegance in mind so that it can look classy in your homes.
You don’t have to wait for minutes for hot water to make the hot water immediately available. You can install it to a small water supply and enjoy an endless supply of hot water.
Moreover, you can conveniently install it wherever it is needed with the help of a plumber. It does not require any sophisticated tool to fix it. All in all, this mini-tank water heater is affordable, consumes less energy, and provides high performance to bring convenience to your lives.
Overall, this super convenient and super classy mini-tank water heater will change your life for good. It is effortless to install and accommodate up to 4 gallons of water in the tank. It has a compact design that saves up a lot of space.
Moreover, this water heating unit makes the water readily available that adds to the convenience. Also, this water heater is CFC-free; therefore, it is safe to use.
2. EcoSmart ECO 18 – Best Electric
Ecosmart provides an unlimited amount of convenience by providing a constant supply of hot water.
Now, you can enjoy relaxing warm water by just opening your tap if you have an Ecosmart tankless water heater installed in your home. This compact water heater is equipped with innovative technologies that make your life easier. It saves you from hefty electric or gas bills and doesn’t go hard on your pockets, making it the best rated tankless water heater.
First of all, this product is extremely safe and meets all North American safety standards. Ecosmart tankless water heater has a durable construction and has a long-lasting built. It can be used at homes, restaurants, and offices.
Moreover, it has a compact design and convenient installation. It comes with an easy to understand interface that allows you to understand the readings with convenience. Moreover, it does not take any specialities to install it. You can effortlessly fix it to the water supply with the help of an expert.
It provides an on-demand water heating mechanism that decreases energy consumption by 50 percent. You can have an unlimited supply of hot water when taking a shower to de-stress your mind and body.
Therefore it is safe to say that Ecosmart is the best tankless water heater for a shower. In addition to that, it has a simplistic yet elegant wall-mounted design. It doesn’t take up your floor space, therefore, providing a lot of free space.
You don’t have to wait for hot water for long as this water heater makes the hot water readily available. This water heater is capable of heating from 1 to 4.3 gallons of hot water on single-use. It also comes with self-modulating technology that activates the heater when you turn the tap on.
In addition to that, it consists of copper and stainless steel components. The components are non-corrosive and rust-free, which makes it a long-lasting product. Lastly, this tankless water heater comes with a lifetime warranty for residential use.
Overall, this compact tankless heater allows for an unlimited supply of hot water. It comes with a fantastic combination of features to make it one of the best tankless water heaters. It has a compact design and consumes less electric or gas energy.
Moreover, it has an easy to understand digital interface. Lastly, this water heater is made with high-quality material that makes it a durable product.
3. EcoSmart ECO 11 – Best for Rvs
Ecosmart is one of the best tankless water heater brands, and ECO 11 is another masterwork. It possesses a fantastic combination of features that results in a phenomenal performance.
The simplistic design of this water heater adds elegance to wherever you install it. This point of use tankless water heater is extremely kind to your budget. It saves your overall energy bills by 60% as it consumes less electric energy. Moreover, it is super affordable, and you can purchase it even if you have a tight budget.
The name is very well suggestive of the fact that it does not have a tank. Therefore, it provides on-demand hot water as soon as you turn the tap on. This heater remains off when you don’t require hot water, which results in low electric or gas bills.
Moreover, it is manufactured using top quality material to ensure the durability of this water heater. It is built to last you long and provide ultimate performance. Also, this water heating unit is extremely safe to use as it meets all the safety standards.
In addition to that, ECO 11 can be installed with ultimate convenience. It does not require any special tools for its installation. This water heater can be used in a wide range of places; you will not find any kinks in its performance.
For instance, ECO 11 can be used in restaurants, local businesses, hair salons, schools, and offices. It consists of replaceable elements that make it an overall convenient water heating unit.
This water heater has an adjustable temperature that can be adjusted through a digital interface. You can easily adjust the temperature from 80 degrees F to 140 degrees F. You need not worry about your water heater taking a lot of space.
ECO 11 is a compact water heater taking less space and giving you a lot of free floors. Moreover, this is a 13-kilowatt water heater ideal to be installed on a small-scale water supply. Therefore, it is one of the best tankless water heaters for bathrooms.
Overall, ECO 11 is perfect for a small water supply; therefore, it is perfect for RVs, bathrooms, kitchens. It saves up to 60% of energy. Therefore, it spares you from heavy bills. It is also very affordable and easy to install.
All of its elements are changeable and are easily available. Moreover, it consists of an easy to understand interface that helps you adjust the temperatures.
4. Bosch ES8 Tronic 3000 T – Best for Apartments
This mini-tank water heater is another flagship production by Bosch, which boasts several remarkable features. It comes with a 7-gallon mini-tank that makes hot water available at all times.
You can enjoy a long relaxing shower after a stressful day without having to fuss about irregular hot water supply. The mini tanks are available in 3 different sizes; you can purchase them as per your requirement. This water heating unit is compact, meaning it wouldn’t take a lot of space.
The water tank comes with a bracket to fix it on the wall to have free floor space. You can also fix this on the floor if that suits you the best. This water heater is best for small water supplies.
It is, therefore, best for apartments, basements, kitchens, and patio. Moreover, it has an elegant design that enhances your overall decor. This water heater is made with quality material to ensure 100 percent durability.
Moreover, it consists of CFC-free foaming that provides maximum insulation. This foaming insulation also makes it an energy-efficient water heating system. The water containing tank has a glass lining that makes it extra durable.
Furthermore, it is a lightweight water heating unit that allows for an effortless installation. It requires an expert to mount it to the wall and make it functional. Lastly, it is super affordable, and the durability is uncompromised.
If you are looking for a water heating unit for your studio apartments or kitchenette, this product is the one for you. It has a classy design that enhances the decor of your place. Moreover, it consumes less energy and saves you from piles of bills.
In addition to that, it is easy to install and even easier to use. This water heater is ultra-durable and well insulated. It can keep the water hot in the water tank for a long time to be readily available for you. All in all, this is the best water heating system for small families.
5. Stiebel Eltron 239223 – On Demand Hot Water
Next in line is the ultimate Stiebel Eltron tankless water heater with tremendous features. This tankless water heater provides an unlimited supply of hot water on demand and with great performance.
This water heater provides constant hot water to your whole house so that you can be at ease. It conserves energy and saves you from hefty bills at the end of the month. It is equipped with intelligent self-modulating technology, which ensures it conserves energy to the max. Moreover, it uses top-notch material for its building to make it a long-standing device.
As it provides hot water to the whole house, so it is safe to call it one of the best tankless water heater for a large family. Moreover, this water heater doesn’t make any agitating noise so you can enjoy hot water with peace.
Also, it has a very compact design that never takes a lot of space. It comes with a convenient digital display that shows you accurate temperature and energy consumption. It also comes with pre-set temperature buttons that make things convenient for you.
With this water heater, you wouldn’t feel any irregularity in the temperature. You can enjoy relaxing showers with this product that provides a constant flow of hot water. It has a sleek design that only adds more beauty to your decor.
This tankless water heater’s durability and reliability are unmatched, which makes it a widespread water heating unit. Moreover, it comes in different capacities that can serve households of different sizes. All in all, this product is one of the best tankless water heaters for hard water and provides ultimate performance.
Overall, this tankless water heater serves large households as it provides a continuous flow of hot water for the whole house. This product is energy star rated and consumes less energy.
In addition to that, it has a sleek, compact design that adorns the place where you install it. Moreover, it doesn’t take a lot of space due to its compact design.
Lastly, it comes with an easy to understand digital display that shows accurate temperature and energy usage.
6. Rinnai V65IN Tankless Gas Water Heater
Next up, we have the ever best Rinnai V65IN tankless water heater. It provides a non-stop on demand supply of water for your entire house. This tankless water heater is loaded with fantastic features that make it a high performing water heater.
The efficiency of this water heater is unmatched, and the durability is unrivaled. You can enjoy a relaxing bath time with a constant supply of hot water without any irregularities. It is, therefore, one of the best tankless water heaters for bathtubs.
It can be conveniently installed in the attic or closet because it has a compact design and consumes less space. The size of this water heater isn’t larger than a suitcase so that you can have a lot of free space. It can thus be called the best tankless water heater for bathrooms.
Moreover, this water heater is popular due to its extraordinary energy-saving capabilities. It can save 40 percent of the total energy and cuts the overall CO2 emission.
The sleek design of this water heating unit looks extra classy wherever you install it. Moreover, it is equipped with ThermaCirc360 technology, which allows for the quick availability of hot water. It is done by recirculating the hot water through the pipes to reach it faster. It also conserves a lot of water.
Hence, it is the best tankless water heater with a built-in recirculating pump. Therefore, if you are an environmentalist and looking for a water heater that helps conserve water, this is the one for you.
In addition to that, Rinnai V65IN doesn’t go hard on your pocket. The initial investment might be a little extra, but it will reduce your bills by a total of 40 percent.
Moreover, the components of this product are replaceable. You don’t have to buy a new water heating unit. You can always replace the components of your old water heater with great convenience.
For added convenience, this water heater allows you to control it via an app. Lastly, it comes with a 120 monthly warranty, which is incredible.
Overall, this tankless water heating unit will solve all your water heating issues. It provides an on-demand constant supply of hot water with ultimate efficiency. It can be controlled via an app, which adds to the overall convenience.
Moreover, this water heater has a sleek and compact design that adds to the elegance. In addition to that, this water Rinnai V65IN reduces your electricity or gas bills by 40 percent, which is incredible.
Lastly, it comes with a warranty so that you can have a worry-free purchase.
7. Rinnai V75IN Indoor Tankless Water Heater
The last product from our best tankless water heaters review list is this masterwork by Rinnai. RinnaiV75IN indoor water heater is a new natural gas heater that works on flowing water.
This water heater is also an energy-saving product saving up to 50 percent on the bills. It has a solid frame, and all the internal components are secured with plastic shThe heater consumes natural gas as a primary source to heat the water. The heater turns on as soon as it detects water flowing through the pipes. Hot water is then delivered all across the home. The revolutionary water recirculation technology keeps the circulation of water, so you don’t waste cold water.
The Water is designed in such a way that it can only be installed indoors. As it is a natural gas water heater, it requires a proper vent system. The Control-R mobile app can be used to control the heater according to your own choice via wifi. This helps in remotely operating this water heating unit when you are off somewhere.
Moreover, it is a high performing water heater that works efficiently without any halts. This water heater has a flow rate of 6.5 GPM, which can provide hot water to the whole house.
These are specially designed to be installed indoors. Moreover, it has a compact design making it perfect for installing in tight spaces like attics and closets. The cost of operation is quite good as compared to other traditional geysers.
This water heater is also an energy-saving product saving up to 50 percent on the bills. It has a solid frame, and all the internal components are secured with a plastic shield. As this water heater has no tank, there absolutely no chances of heat losses. Lastly, This water heater is reliable and can serve you for up to 20 years, as the company claims.
This tankless water heater steals the show due to its compact size and efficient performance. It can perfectly fit in tight places such as the attic or closet. This water heater will save you bucks in the distant future as it is super energy efficient.
It is highly durable, and the internal components are protected with plastic shields. Moreover, the components are replaceable, which also helps you save money. In addition to that, this tankless water heater saves water, making it an eco-friendly product.
8. Rinnai V65EN Outdoor Tankless Water Heater
Rinnai V65SEN will be your absolute favorite because you get top of the line features in it. The compact body, efficiency, and overall output are impressive. This water heater is the new model that uses the latest technology to bring hot water to your taps without any obstructions.
The maximum threshold is 120000 BTUs that means it works quickly and efficiently. Moreover, the company claims that the water heater average life expectancy is 20 years, which is remarkable.
In addition to that, a faulty part, in any case, can be replaced easily and are readily available anywhere in the USA. The geyser is loaded with tons of features that include wifi assistance. The wifi compatibility adds to the convenience and allows you to control several features.
Moreover, this water heater is an energy conserver and saves water to a great degree. The geyser only works when the tap is running or water is flowing through the pipes. You save up to 40 percent of energy and save on the bills.
Now let’s talk about the design and built quality of the water heater. This is one of the finest designed geysers that is compact and slim. Therefore, it can be placed anywhere in a tight space.
The water heater makes sure you never run out of hot water. It is equipped with a flow sensor and senses whenever you open the tap. The geyser runs on natural gas; thus, a constant gas source must keep this unit running.
This classy and compact water heater will change your life for good. If you are looking for a long-lasting gas-fired water heater, then this is the product you need. This water heater is going to save you from heavy bills in the long run.
The compact design of this water heater makes it fit easily in tight spaces. Moreover, it is equipped with a water recirculating pump that makes sure no water goes wasted. Also, it has a lifespan of 20 years, which is incredible.
All in all, Rinnai V65EN RV65eN is one of the best tankless water heaters.
9. Rinnai RL75IN Natural Gas Water Heater
With winters getting more and more intense, you would want your water heater to function without halts. You don’t have to worry because Rinnai RL751N has got your back. It possesses distinct qualities that make it stand out in the best tankless water heaters list.
This product is jam-packed with supreme features that make this water heater worth every penny. It is a gas-fired tankless water heater, which makes it best for supplying water to the whole house.
Now let’s talk about some features of this particular model. This tankless water heater makes sure that you never run out of water. Be it a shower or laundry, or running the dishwasher provides hot water at all times.
In addition to that, it has this remarkable technology that circulates the hot water through the pipes. This innovative technology makes sure no water gets wasted. Therefore, it is one of the best tankless water heaters when it comes to conserving water.
Now talking about the design, this has to be one of the slimmest and smallest water heaters ever. That means it saves a lot of valuable space. The small design allows for convenient installation in spaces like attics, crawl spaces, and even closets.
It has one of the most efficient technologies that cut off carbon emissions. You use 40 percent less energy to heat water as the geysers only work when you need the water.
Rinnai is a well-known company and has many years of expertise, giving the best and reliable appliances to the customers. Every part of their appliances is readily available, so you can replace a part without replacing the whole water heater completely.
Furthermore, the durability of this product is incomparable that prolongs its lifespan. Also, it does not require high maintenance, thus saving you some extra bucks.
Overall, Rinnai RL75IN is an incredible water heater having a small size. It is, therefore, one of the best tankless water heater for tiny house. The water heater is run by gas, so it needs a proper vent system.
The best part of this product is its less carbon-emitting operation, which makes it an eco-friendly product. Once properly installed, it does not require any special maintenance. Moreover, this water heater consumes less energy and saves water to a great extent.
10. Camplux 5L Propane Tankless Water Heater
When it comes to the outdoor water heating system, Camplux tankless water heater is the hero. This tankless water heater is popular because it is CSA certification for the US and Canada markets.
It is, therefore, one of the best tankless water heaters in Canada and the US. This water heater has made camping a lot easier and more fun. It comes with innovative technologies that make heating water outdoors possible.
This water heating unit is ultra-portable and lightweight, making it easier for you to transport it. In addition to that, it runs on less energy. Therefore, you don’t have to spend extra bucks on the bills.
You can install this water heating unit indoors for small water supplies. It gives tremendous performance by giving on-demand a constant supply of hot water. It is, therefore, one of the best tankless water heaters for bathrooms. In addition to that, this product comes with oxygen depletion sensor protection for added security.
Not only that, but this water heater can also be used when you are camping in the mountains. It is thus the best tankless water heater for high altitude. All of this is possible due to its portability, high performance, and cell battery starting system.
It can work impressively where the water pressure is low. That means that you can have a continuous flow of hot water whenever you need it. In addition to that, you can also operate this unit using gas as a fuel, which gives an equally great performance.
It allows for different water temperature ranges that are 8 degrees celsius to 46 degrees celsius. This device is extremely safe to use as it meets all the safety standards required.
It comes with an overheat protection system, anti-freezing system, flame failure device, and oxygen depletion protection system. Lastly, Camplux tankless water heater is ultra-durable. It uses top quality materials. This water heating system is long-lasting and changes your life for the good.
Overall, this is an extremely nice water heater that is great to use for camping. This tankless water heater is ultra-portable, making its transportation effortless.
Moreover, it has a compact design that makes it easy to store. It has many safety features such as an overheat protection system, oxygen depletion protection system, etc. Lastly, it is ultra-durable and a high performing water heater.
Best Tankless Water Heater: Buying Guide
Installing a tankless water heater at your home is indeed a good decision. What type of tankless water heater to buy and what to look for in them are the real questions. Tankless water heaters come with a high upfront cost.
Therefore, it is necessary to make a good choice so that your water heater can last you for years. You need to do some research before investing your money in tankless water heaters. The first consideration you need to make is what brand are you burning the product from. You Should buy your target product from a reliable and well-reputed brand.
We have listed some of the main features that you should not overlook before buying a tankless water heater.
The first thing you will ask yourself is what fuel type you want for your tankless water heater. A tankless water heater either runs on electricity or gas. The fuel type you will decide is based on your personal preference and convenience.
The most basic thing you have to bear n mind is that a gas-fired water heater must need a vent. For an electric water heater, it is the voltage and amperage that should be taken care of.
If you plan on buying a water heater that requires electricity as fuel, you should check a few things: voltage, amperage, and circuit breaker. It is necessary to look for how much voltage input your electric water heater requires.
Voltage might vary in different areas; therefore, you have to look out for that. There many manufacturers that are producing water heaters with a wide range of voltage inputs.
Moreover, different water heaters require different amperage ranges. You have to look for the amperage in your area so that you can fulfill your tankless water heater’s requirement.
It is important to consider that the area you want to install the water heater has a secure circuit compatible with the product. You can also install the water heater on its own circuit, which will make things secure and convenient.
If you mean installing a heater that requires gas as a fuel type, you need to make sure you follow certain requirements. The first and foremost thing you have to check if you have provided a proper venting system for your tankless water heater.
The gas-fired water heater requires propane or natural gas for ignition. Therefore a vent is necessary for that. Next, you will check if your gas pipelines are compatible with your gas tankless water heater. If it exceeds the requirement of your water heater, then things may get complicated.
It is also true for the gas supply falling short of the requirements your water heater needs.
Venting is necessary for a gas-fired water heater as the exhausted gasses have to be treated properly. Many water heaters come with a venting kit, but that might not meet proper venting requisites.
Therefore, it is crucial to purchase a UL 1738, also known as a category III stainless steel type vent. Also, the type of vent you are purchasing should be compatible with the area you are installing it. In that way, your gas water heater will perform with ultimate brilliance.
Size & Location
While deciding to buy a tankless water heater, you also need to consider the location to install it and the size. If you want a constant supply of hot water for your kitchen basin, you will require a smaller tankless water heater.
Tankless water having a 1.0 to 1.5 flow rate in GPM would be ideal. The temperature rises according to that flow rate will be 54 degrees F. Moreover, the temperature rise might vary for different water heaters.
The water heater will adjust the temperature according to that flow rate. Moreover, a bathtub, shower, dishwasher, and laundry sink have different flow rates. The size and location of your tankless water heater depending on the type of water supply.
Moreover, it is also important to look for a tankless water heater by keeping the water’s incoming ambient temperature. For instance, if you live in a moderate temperature region, look for a water heater that provides wide temperature ranges.
Let’s take an example; the flow rate for a shower is 2 GPM. The temperature of the coming through the shower is 60 to 65 degrees F, so choose the water heater that provides high temperatures.
For instance, you want your shower temperature to be as high as 115 degrees F. In that case, look for the tankless water heaters that provide a temperature increase greater than the ambient temperature. A water heater providing 50 degrees F temperature rise is ideal in such cases.
A tankless water heater is perhaps a vital commodity to own, specifically in the regions where the weather remains cold. Tankless water heaters are compact, lightweight, and consume less energy. It is because of these reasons these water heaters are widespread and popular.
Although the tankless water heater requires a huge initial investment, it saves a lot of money in the long run. The best part is that they provide demand constant supply of hot water. This water heating unit remains off when you don’t need water, and the list of its benefits goes on.
Our top picks from the above listing are as followed;
- EcoSmart ECO 18, best known for its easy installation and compact design.
- EcoSmart ECO 11, known for its compact design and user-friendly interface.
- Bosch Electric Mini-Tank, best known for its CFC-free material and small size.
In a nutshell, tankless water heaters are slowly taking over the tanked heaters for the benefits they provide. They are small in size, have a long life span, are energy efficient, and provide remarkable performance.
Above all, these tankless water heaters reduce water waste to a great extent. It is because of these reasons people prefer tankless water heaters. The products listed above are brought forth by some of the leading tech companies. The durability, performance, and reliability of these water heaters are matchless.
We hope this article to be an authentic and useful source for you to solve all your issues regarding tankless water heaters.