The continuous flow of hot water from every tap in all houses right now is one of the foremost necessities for all homeowners. To most people, having a big tank where water is being heated up in the basement can be worrisome as it occupies more space and wastes a lot of resources that could be saved and utilized. Big families that own a traditional water heater even with large tanks do have their share of hot water that does exist for a while and sadly runs out after other have experienced the joy of hot bath, then leaving you to the mercies of cold water.
Owning a tankless water heater does just save you from spending alone, it provides abundant hot water to all taps in the house wherever and whenever needed. The tankless hot water achieves this simply just by heating water as it flows through it. The tankless water heater has continued to experience sporadic growth as its market continues to grow. As a result of this, we will be analyzing few best tankless water heaters without leaving any part untouched as this will serve as your guide when picking one.
Table of Contents
- 1 10 Best Tankless Water Heater Reviews 2020
- 1.1 1. EcoSmart ECO11 Tankless Water Heater
- 1.2 2. EcoSmart ECO 27 Tankless Water Heater
- 1.3 3. Rheem RTE 13 Tankless Water Heater
- 1.4 4. Eccotemp FVI-12-NG Tankless Water Heater
- 1.5 5. Rinnai RL75iN Tankless Water Heater
- 1.6 6. Stiebel Eltron Tempra 24 plus Tankless Water Heater
- 1.7 7. Takagi T-KJr2-IN-NG Tankless Water Heater
- 1.8 8. Rheem RTGH-95DVLN Tankless Water Heater
- 1.9 9. Eccotemp L5 Portable Tankless Water Heater
- 1.10 10. Ecosmart ECO 18 Tankless Water Heater
- 2 What is a Tankless Water Heater?
- 3 Benefits and Drawbacks of Tankless Water Heater
- 4 How to Choose the Best Tankless Water Heater
- 5 Criteria for Installing and Replacing Tankless Water Heater
10 Best Tankless Water Heater Reviews 2020
This is a great electric tankless water heater. It is made for small homes because it has a low flow rate of water output at 2 gallons per hot water minute (GPM), this is alright for one bathroom. It has the weight of 6.5 pounds and dimension of 6.5 x 13.5 x 10 inches having 13 kilowatts at 240 volts. It is packed with one of the best self-modulating devices.
EcoSmart ECO11 has a digital interface that gives it absolute control over the water temperature. It is one of the best devices for cold climate. It can save about 60% of the heating cost and also have a lifetime warranty.
EcoSmart ECO 27 is an attractive and slim electric powered tankless heater. It is one of the best water heaters around with components made up of copper and stainless steel. It is designed to work efficiently and effectively during cold climate with a high rate of flow. During cold climate, it can heat 3 GPM and 6 GPM during warm climate.
It has a Weight of 11 lb, rated for 240V, and it can generate 27 kilowatts of energy producing about six gallons of water per minutes. It has a digital temperature control which makes its water temperature to be more stable. It doesn’t stop there, it is an energy efficient tankless heater that can save about 50% of overall costs. EcoSmart ECO 27 has a self-modulating technology and its manufacturer is so sure of its durability that it has a lifetime warranty.
This is a compactly designed electric water heater that can fit into anywhere. It can be used with the electrical system at home. It has a standby mode and LEDs that indicate its active mode. This heater is one of the most popular tankless water heaters because of its compatibility. It is also cheap, it saves energy and easy to install.
Rheem RTE 13 Tankless Water Heater has the weight of 7.3 pounds and dimension of 7.2 x 7.2 x 7.2 inches and 240 volts, and a flow rate of 4 GPM. This is a fair bargain due to its cost. It also boasts of the copper heat exchanger. One of its drawbacks is that it has a relatively low rate of output; it cannot service more than a shower at a time. It is only good for small homes.
This is a high-quality capacity Gas water heater. It is powered by propane; this makes it be more effective and efficient. It is designed to produce small to medium hot water, it is a perfect tankless heater for a small family, cabin or cottage. It produces a rise of 45-degree Fahrenheit temperature when operating at the highest capacity of 4.8 GPM.
Eccotemp FVI-12-NG Tankless Water Heater has a sleek digital display of temperature which makes it be able to manually control its water temperature and it only uses gas when the water is hot. It’s also with power ventilation which provides safety and options for venting. It has a stainless kit of 110 volts with the weight of 33 pounds. It is one of the cheapest gas powered tankless water heater on the market right now and it comes with a two-year warranty.
Rinnai RL75iN tankless water heater is a gas powered Energy Star-certified unit, this shows that it has great energy efficiency. With the weight of 50 pounds and dimension of 14 x 9.3 x 23 inches, it can be mounted almost in any room and vent outside either by wall penetration or through the roof. This unit is also an energy and money saver.
It produces about 7.5 gallons of hot water per minute; this makes it perfect for a home with two to three bedrooms which is great, it can also be used for a commercial purpose. It has a digital temperature control system that has an error code indicator, its temperature can be adjusted to any degree depending on the user’s preference. It has a maximum of 180 000 BTU, it also comes with a warranty of 12 years.
This is a sleek 240 V, 24 kW tankless water heaters that come with impressive features. It has a dimension of 21.5 x 19.5 x 8.8 inches, weighing 15.4 pounds. It is one of the most advanced tankless water heater available, boasting of an advanced flow control (AFC). This feature makes it possible to always have a constant flow of hot water irrespective of its demands. It is also the only tankless heater that has this feature.
Another one of its important functions are its ability to regulate temperature, it has a digital temperature control system which eliminates temperature fluctuation issue that comes with other tankless heaters. it can work between 208 to 240 volts with an ampere of 2×50 Min. venting is not required and it is easy to mount on almost any wall due to its size and weight.
It is Energy Star certified, having an energy factor of 0.81-0.83 it guarantees that it reduces utility bills and that it uses less water when used. It is also certified Frustration-free; this also guarantees that there won’t be any case of frustration with the water heater. It is a natural gas tankless water heater suitable for moderate apartments and this unit is one of many best tankless water heater money can buy.
It has a nice 6.6 gallons of hot water per minute (GPM) flow rate which is not bad. It is also powered with a digital temperature control system that monitors water temperatures input and output to give a stable flow of temperature. It also has an Air-Fuel Ration (AFR) features, it monitors the efficiency of the device and also minimizes its emissions which might be harmful. It is a great value for money device with a warranty of 5 years for its parts and 10 years for its heat exchange.
Rheem is a gas tankless water heater with over 90% of energy efficiency. Though it is an expensive water heater, it has great features that make it worth the price. It is reliable and the quality meets the industrial standard of water heaters, there is great attention to details when it comes to its production. For easy installation, it comes with a self-diagnostic system which also makes maintenance easy and simple.
When it comes to capacity, it is one of the largest capacity domestic tankless water heaters available with big outputs of about 9.5 gallons of hot water and with a standard flow rate. It has a digital temperature display that aids its temperature regulation. It’s also with a digital control and included is a thermostat and has a system designed for direct venting. It has the weight of 79 pounds and dimension of 18.5 x 9.8 x 27.5 inches and a warranty of 5 years.
This Eccotemp L5 Portable is an outdoor tankless water heater. With the weight of 13.8 pounds, dimensions of 14.5 x 11.5 x 4.5 inches, it is easy and portable to carry. It has D-cell batteries that make it easy to use outside the house. It is a good fit for use when camping, hiking or when going on vacation. It is a natural gas tankless water heater that is easy to operate.
This water heater has an output of 1.5 gallons per minute of hot water (GPM). It comes along with a vent shield, shower hose to wash easily, gas regulator, body heater, and hardware. It comes with a one-year guarantee.
This is also another Ecosmart ECO water heater; it is 18 kilowatts at 240 Volts electric water heater. It comes with a thermostat that automatically reset when required. It has a weight of 14 pounds and dimensions of 20 x 20 x 6.5 inches which make it easy and simple to mount. Its saves over 10 cubic spaces, it also saves over 50% of utility bills.
Ecosmart ECO 18 can generate over 2.5 gallons of hot water; this is equivalent to a shower head and a sink flow inlet, it can also run two showers when the temperature of the water inlet is over 70 degree. It is highly durable and easy to use, having a digital control device that regulates the temperature of the water heater. It also comes with a lifetime guarantee.
What is a Tankless Water Heater?
A tankless water heater can also be called an instantaneous or demand-type water heater designed to give hot water only when required. This device heats water immediately it starts flowing through its exchanger coil (usually made from copper or brass). There are some designs that are engineered in such a way that they use natural gas and some with electrical systems.
The tankless water heater features comes with surface treatments and coatings that are durable in protecting the whole units. The temperature can be adjusted to any degrees needed with the controls on the tankless water heater.
Benefits and Drawbacks of Tankless Water Heater
The benefits and drawbacks of tankless water heater have always been a sensitive topic most homeowners and plumbers dwell on. This is simply because people generally wants energy efficient devices that are both eco-friendly and economical.
Benefits of Tankless Water Heater
Here are some benefits of the tankless water heater which could actually give you a good few reasons to get one.
- Longer Lifespan – If you have been using the common conventional or traditional water heater, am sure you will know that they are meant to last about 9 years or 14 years at most but the tankless water heater is designed in a way that its lifespan can last up to 20 years or more and it has parts that can be replaced which as well extends its lifespan duration.
- Extremely Energy Efficient – The tankless water heater is quite an energy efficient unit as it is believed it could reduce about 45% energy cost just in a year alone. Although you will be spending more while purchasing and installing the tankless water heater. Its cost of operation after the purchase will make up for the amount spent. As the device itself reduces energy cost which means money is not wasted. The tankless system does not waste precious energy heating water that is not needed but provides hot water instantaneously when required.
- Saves Space – Space tankless water heaters occupy on the wall is less, unlike the conventional water heaters that are usually bulky and occupying precious space that can be used for other things. Generally, its bulkiness is as a result of its large capacity which is usually 35 to 60 gallon and has a height and width which is about 5 feet and 2 feet respectively. But the tankless water heater in comparison is light in weight and smaller in height and width. The tankless water heater can also be installed outdoors with its anti-freeze kit included.
- Safety – The new models of tankless water heaters have details of its water flow and pressure shown in the monitoring system, which shuts down the heater immediately system failure occurs. The older models are also known to have good safety measures as they operate only when hot water is needed.
- Reliable – A well sized tankless water heater easily delivers a ceaseless supply of water, mostly about 7 gallons of hot water per minute. This way, the tankless water heater can’t easily run out of water and has added to its level of reliability.
Drawbacks of Tankless Water Heater
The following listed drawbacks are to help you understand the tankless water heater limitations and not to scare you off.
The tankless water heater initial cost of purchase, installation, and maintenance is very expensive. The cost of the heater itself is not extremely high but the cost of a new wiring system for the electric heater and installing stainless steel tubing for venting the gas units adds highly to the cost of the tankless water heater, which makes it about three times expensive than the traditional one
- The Dreaded Delay – Since there’s no reservoir for hot water, there is always a short delay between when the gas burner or the heating elements activate and when water starts to flow. During continuous use, that is when the tap is turned on and off, there is a flow of hot water which is then followed by a little quantity of cold water as the heater starts working again the hot water starts flowing back. The initial belief for a first time user will be that the unit is failing.
- High Cost of Maintenance – After paying as much as thrice the price of a conventional heater, the cost of maintaining a tankless water heater is quite expensive than that of the traditional or conventional units. Features like the heat exchanger require replacement after few years. This replacement is a function of the type of heat exchanger in the unit and most of this replaced feature can be expensive.
- High Electrical Load -The tankless water heater is a high current unit, so having such device installed in most homes in a street or an area can create electrical problems because whenever they are in use most especially during the day, it could cause electrical spikes. The tankless water heater might also increase the operating cost if used during the peak time.
- Power Outage – If the power fails, the electrical powered tankless water heater won’t be able to supply hot water, unlike the traditional type which can deliver supply pre-heated water even after any form of power failure. The gas powered units do require a little amount of electricity to power their control systems. Therefore if there is a power outage the gas powered unit won’t functio.
How to Choose the Best Tankless Water Heater
Here are some few questions that can guide you whenever you want to choose the best tankless water heater that suits you the most.
1. What is the Hot Water Requirement?
If you are the type with a big family whereby you are planning to have at least two people using different showers at the same time, or probably a dishwasher and another device using hot water. It’s advisable you know that the number of people in a home is directly proportional to your normal use of water. A shower delivers up to 3 to 4 gallons of hot water per minute, therefore the tankless water heater will have to deliver about 7 gallons of hot water per minute.
2. What Size of Tankless Water Heater do I Need?
Are you planning on supplying hot water just to a single tap, or do you probably have 2 or more places in mind that need hot water? If it’s the whole house, then the water heater will have to be installed in the basement and there are some single or one application units which purpose are basically just to supply hot water to the shower only. This single application tankless water heater can be perfectly installed in a cabinet located in the bathroom.
3. Which Heat Source is the Best?
The tankless water heater with an electrical heat source, to some, seems better because it doesn’t need vents but it needs a high ampere circuit and it is advisable that the installation of the tankless water heater is done a bit close to the electrical panel. Furthermore, if you prefer the gas heat source it is advisable you go for the propane type rather than the natural gas type because it is easily accessible.
4. What Venting Type can I Choose?
The general venting types available are the Open combustion installation otherwise called the Single pipe system and the Room sealed installation which is also known as the Twin pipe system. The exhaust vent alone is installed outside in the single pipe system while the room sealed installation is designed with an internal fan that sucks in and expels air via direct air venting system.
Criteria for Installing and Replacing Tankless Water Heater
The tankless water heater also is known as the on-demand water heater is a device that has come to stay due to the facts that it is environmentally friendly, save utility bills and energy to it be safe, durable, reliable, clean and continent.
There are some criteria to follow for installing tankless water heater, it is advisable to contact an electrician or a licensed installer but you can also install it yourself depending on your preference. Tankless water heater usually comes with user’s guild manual. The instructions depend on the brand and the type of tankless water heater whether it is an electric or a gas water heater. That being said, there are general criteria for installing a tankless water heater.
- To install a direct vent tankless water heater, you should mount it in a place that is properly linked to the outdoor to avoid damage to your home.
- All states have code applications that must be followed. Before you get that tankless water heater that you have been eyeing, make sure you verify if the device is acceptable and complied with your state code.
- To install an electric tankless water heater, you have to make sure the size of the wires, breakers, and the amps are the ones required for the electric heater
- The tankless water heater should be installed in a place where that is adequate amount of air flow
- The water heater should also be installed where the noise won’t disturb you or your neighbors.
When do you think will be the right time for you to replace your water heater? The life expectancy of tankless water heaters are between 10 to 20 years depending on the brand of the water heater. After this period, you can change your water heater. The most important factor when it comes to this is maintenance; a good maintenance will increase the length of the water heater.
Tankless water heater comes in various shapes and sizes with a different mode of operation. It is hoped that this review narrow down your choices on which tankless water heater will best suit your home, the one within your budget and probably the one that fits your requirement. Listed above are the best tankless water heaters that money can buy. You should also make sure that the water heater you later chose to buy passes your state code application.