The tankless water heaters are the device that has no storage tank with it. Hence it does not store the water and heat the water in it. It just heats up the water that passes through the unit, and thus becomes an unlimited source of hot water. So it becomes necessary to choose best tankless water heater for long term & value for money.
Water is the essential thing that we need in your daily life. We use it for cooking, bathing, cleaning and even washing. But in many regions on our globe, the incoming water temperature is too low to be used for some purposes such as bathing and washing. In such scenarios, we require a water heater to increase the incoming water temperature.
Water heaters are of various types and can be classified using different criteria. These water heater can be electrically operated or gas operated. But the main distinguishing feature of water heater can be done on the basis of the provision of a tank. There are tank water heaters and tankless water heater
Best Electric Tankless Water Heater: Stiebel Eltron Tempra Electric is the best tankless water heater with high-end technology. It has features that will prove truly beneficial to you. It is even cost efficient and has a great heating capacity.
Best Gas Tankless Water Heater: Rheem RTGH-95DVLN is the best gas operated water heater. It provides more amount of hot water with less consumption of gas. Perhaps it is a highly efficient in terms of hot water generation than the rest of the gas water heaters in the sector. It can be connected to many fixtures with an adequate amount of flow.
Best Tankless Water Heaters Reviews
The tankless water heaters are undoubtedly the best gadgets for water heating but which is the most efficient of all. Leaving all, here are some recommendations of the best products by our experts which will prove out beneficial for you.
- Best Tankless Water Heaters Reviews
- #1 Top Pick: Rheem RTGH-95DVLN Tankless Water Heater
- #2 Stiebel Eltron Tempra Electric Tankless Water Heater
- #3 Takagi T-KJr2-IN-NG Indoor Tankless Water Heater
- #4 Eccotemp FVI-12-NG High Capacity Gas Tankless Water Heater
- #5 Ecosmart ECO 27 Electric Tankless Water Heater
- Advantages of Tankless Water Heaters
- How to Install a Tankless Water Heater?
- How does a tankless water heater work?
- What size tankless water heater do I need?
- Tank vs Tankless Water Heater
#1 Top Pick: Rheem RTGH-95DVLN Tankless Water Heater
The Rheem RTGH-95 DVLN tankless water heater is an efficient water heater with a hot start programming feature that helps to reduce the water temperature fluctuations and hence increases the efficiency of the water heater.
The fluctuation that occurs due to on and off of the water heater, majorly known as cold water sandwich, is eliminated by this water heater.
This tankless water heater also consists of an exclusive overheat wrap in the form of a film that secures the water heater from being overheated.
This water heater even provides you the facility to connect another water heater with it with the help of a high-quality EZ-Link cable which is something highly demanded by the consumers.
By doing this, there is plenty of sources (fixtures/taps in the house) from where you can get hot or warm water directly.
The other feature that this unit provides the consumers and which is a very responsible step by the manufacturers is the water saving feature.
The unit is able to save up to 1100 gallons of water in a year. This is done by allowing decreased flow of water through the pipes until it reaches the heater’s predefined temperature. This unit allows the water to flow at 0.26 GPM which is the minimum flow rate by any water heater and the activation flow rate of 0.40 GPM which guarantees the users to receive hot or warm water even when the demand is low.
#2 Stiebel Eltron Tempra Electric Tankless Water Heater
This tankless water heater offers two entirely different charts based on the power input. It offers a 240 volts input system features as well as 208 volts input system. Using a 240 volts power input system the water heater provides you a 2.6 GPM water flow rate at a 40 degrees F which can go up to 5.4 GPM maximum at 75 degrees F.
This 240 volts unit produces 24kW of energy and boosts the water at higher temperature efficiently.
Whereas according to the manufacturers the lower output that the unit provides is adequate enough for a hot shower while the higher output by the unit is compatible for a jacuzzi tub.
This tankless water heater has an analog dial that is mounted on the front of the water heater. The water heater is designed maturely and features out the dial as a guidance to the user and it even consists of a digital readout that features the unit in an effective manner.
The Advanced Flow Control feature of this electric tankless water heater is one of its kind. It maintains the flow and the temperature of water automatically and in much smoother manner. But this unit has only a three-year warranty provided by the manufacturers. Remember, that to claim warranty, the unit must be installed by the licensed professional installer.
And based on the consumer reviews the Stiebel Eltron Tempra Tankless Water Heater has great temperature control features. This makes the consumers satisfactory for what they have purchased.
The reviews for this product were highly positive and it was rear for us to find a negative evaluation for this unit. The users of this unit were happy to experience that the unit was exactly what they expected it to be and even better in some situations.
#3 Takagi T-KJr2-IN-NG Indoor Tankless Water Heater
The Takagi T-KJr2-IN-Ng is one of the most rated tankless water heaters that you can find in the market. This tankless water heater is reviewed to be an efficient and dot on price unit. This is a gas feed heater and hence needs ventilation for air circulation. You have the option of venting it vertical or horizontal, it is completely your choice.
Keeping in mind, as it is a gas water heater and that too tankless, it can be connected with a couple of fixtures (showers or taps) or even three would work if connected.
The water heater unit is 13.8 inches x 20.3 inches in dimension and 6.7 inches in depth. Compared to other tankless water heaters it is quite bigger. But frankly speaking, this is a proper and allowable size for any gas water heater.
The connections provided in the unit for water and gas is same in size, 3/4 inch. This helps the water as well as gas to flow at a high rate which increases the process efficiency and provides you warm water faster. An 110-volt of electric supply is required to run this unit.
This water heater provides you a constant temperature water with the help of thermistors. Talking about the safety, this unit is featured to exhaust and water temperature controls. The Air-Fuel Ratio sensor to keep a check on the emissions, efficiency and the processing of the unit.
With all these features, the Takagi even give a 5-year warranty for the parts and a 10-year warranty for heating components. This is promising and a satisfactory objective that the company has taken.
#4 Eccotemp FVI-12-NG High Capacity Gas Tankless Water Heater
This Ecotemp Tankless Water heater is basically manufactured for a small or medium sized household. But at the same time, the unit has an efficient flow rate of 3.4 GPM which is quite sufficient for a medium sized house. Looking at the stats, a hot water shower uses a 2 to 2.5 GPM of water flow rate.
Thus even on the practical basis, the Ecotemp tankless water heater offers a sufficient amount of hot water for a shower as well as a couple of taps at the same time.
Comparatively, it may seem too low output for a water heater. Eventually, this unit is designed for a lower usage household.
This Eccotemp FVI-12-NG Tankless Water Heater being a gas water heater requires a ventilation duct or a pathway which leads outside of the house.
Hence a ventilation is required for the unit which comes out from the back side and in a horizontal manner. This tankless water heater is really smaller in size and consumes a very little space as compared to the conventional tanked water heater.
Although this unit is a gas operated unit, it still requires an electric supply of 110 volts. This water heater even requires a bit of experimental setting by the customer to set it to a preferable setting and have the desired outcome.
The unit possesses a digital unit readout feature which makes the monitoring of the unit easy and comfortable for the users.
It even consists of a different manual gas flow control and water temperature control allowing the user to regulate the water temperature and flow rate as per the requirement. The forced and powered ventilation of the unit makes the product more efficient and consistent.
This forced vent feature exhausts the noxious gases out effectively and hence increases the working efficiency of the water heater.
#5 Ecosmart ECO 27 Electric Tankless Water Heater
The Ecosmart ECO Water Heater is a tankless electric water heater which generates 27 kW of energy. This unit runs on electricity and is quite easier to install compared to gas water heaters. But you will require an expert to install it for a betterment of the unit and yourself.
Thus it easier to install than the gas unit but still not recommended for you to install it personally.
The manufacturers have designed and manufactured this product to perfection. They even stated an appreciable verdict that the unit has two various output flow rates depending upon the location of installation.
This means that if you are residing in a particular region where the incoming temperature of the water is just above the freezing temperature then the unit provides a 3 GPM of output. On the other hand if the unit is installed in a region where the incoming water is at a normal temperature the unit provides a 6 GPM of output.
The manufacturer of this tankless water heater claims to save up to 50 percent in the energy bills compared to the tanked water heaters.
The reason that the unit is so efficient is because of the self-modulating technology that the manufacturers have featured the water heater with. This technology regulates the amount of required energy for heating water very precisely. And after all these, the manufacturers and the brand has provided a lifetime warranty for the unit.
Advantages of Tankless Water Heaters
A water heater is a gadget that is required the most on a daily basis in our life. It is the most used device as it is a requirement of each and every member of the house.
We need the hot water not only in mornings when we go for a bath. Ultimately, We need it for the entire day long whenever we open the tap for any purpose. Well, it can be a tough day when your water heater is dead. and even when you do not get sufficient amount of hot water.
You may have a water heater that consists of a water tank for storing the water and heating it. But then many times you may even have faced a shortage of hot water.
Apparently, the water heaters which includes a water tank for storing and heating purpose have a certain amount of capacity of heating water. As we all know that each water heater which has a tank, has a definite capacity for storing and heating the water at a particular time.
Hence the tanked water heater may come out to be a restricted unit for you which cannot provide you sufficient amount of warm water as and when required.
Neither it can be connected to many taps nor it has the ability to provide you warm water whole day long without interruption of processing time.
Basically, these water heaters are made for an individual use or a single serve use at a particular time. But if you are in a need of continuous warm water for more than two taps or showers then the Tankless Water Heater can do the job for.
Here are some features and perks of tankless water heater that will give you some idea what actually a tankless water heater is able to do.
The most vital feature of a tankless water heater is that it never runs out of water. This means that you can have as much warm water as required by you and at any time of the day you need.
Moreover, tankless water heaters have a work span of about five to ten years with the same work output efficiency.
These water heaters consume less space as they are tankless and hence they can be installed easily on walls as well. You are even able to install them outdoor if you want but with an anti-freezing kit.
The smaller units of tankless water heaters can be placed even under the cabinets or inside the closet as per the requirement.
The tankless water heaters have a superior quality of no heat loss even when it is in the standby mode.
With this water heater, you tend to save comparatively 20% more in your electricity bills.
And talking about the electric tankless water heaters, they do not produce any kind of greenhouse gasses while processing or after processing.
In water heaters that have tanks for storing and heating may tend to rupture and overflow. But, there is no such situation in the tankless water heaters.
Adding to all the above-mentioned features, the most appreciable feature is that it can be operated with the help of a remote control. It even has various different settings to choose from.
How to Install a Tankless Water Heater?
As we all know that the tankless water heater is a tank free unit and hence it comparatively easy to install. But still, all are requested to be careful while doing so. The tankless water heater can be placed indoor as well as outdoor. This completely depends, on the product specifications and your preference. So let’s see how the installation can be done of a tankless water heater.
CAUTION NOTE: The tankless water heaters are electric as well as gas operated, hence they require gas and electric supply. For this, you should have a long, standard stainless steel flue pipe for gas supply or a high voltage carrying cord for electric supply. So take care of the concerned things before installing the unit yourself.
STEP 1: Turn off the main water supply
Keep the first thing that you require to do is, to turn off the main water supply line so that you can connect the water heater with the water supply line successfully and properly.
STEP 2: Disconnect the power source of the old unit
If you have a preinstalled water heater unit at your place which you want to replace with the new one, then disconnect the power supply from that old unit. This will free the unit from any kind of electric supply, this will keep the process and you safe from any kind of accidents.
If it is a gas water heater then turn off the gas supply first and later disconnect the gas line very carefully from the water heater.
STEP 3: Disconnect the water supply line from the old unit
Now disconnect the water supply line from the old unit safely. You may require a bucket for the water that is in that supply line, as there will be some amount of water in the pipe even if you turned the supply off.
STEP 4: Gather all the required stuff
After the removal of the old unit, you need to unbox the new one and bring all the required tools for installation of the same. You have to keep everything within your reach that is required during installation and even check whether you have all the components that the manufacturers have provided you for the installation of the unit.
STEP 5: Proper installation location
The water heater unit is to be installed with by keeping in consideration the required clearances that are predefined by the manufacturer. So select the installation place with respect to the following clearance and other requirements such as distance from the origin of the power supply and water supply.
STEP 6: Mount the unit
After selecting a proper location for the unit you need to mount the unit at that place. But for that first refer the manual that is provided by the manufacturers. Know regarding how to install the unit properly and what you need to take care of while installing it. Mount the unit properly at its place such that it is balanced and there is nor inclination or overweight on any side.
STEP 7: Connect the power and water supply
Now after supporting the unit properly at its place, take the power supply line, if electric connect the cord and if it is a gas operated unit, connect the gas line with the unit carefully. Check again whether the gas line or electric cord has no leakage or loose connections. Later connect the water line as well.
STEP 8: Ventilation connection for gas unit
If you have a gas operated tankless water heater then you require providing the unit a vent for the circulation of gases. A special stainless steel flue gas pipeline is required to be connected to the unit which has its other end free in the atmosphere.
STEP 9: Start the unit as per the manufacturer’s guideline
The unit is installed and is ready to use. Just a brief go through is what it is required before you start the unit. Read the procedure to start the unit and check whether you have done everything that is necessary and suggested by the manufacturers. Later turn on the device and enjoy the service!
How does a tankless water heater work?
The tankless water heater has a very simple and lucid working procedure which makes it more efficient than the conventional tanked water heater. A tankless water heater is a unit which can be operated using electric power supply as well as with the help of gas power supply.
In an electrically operated tankless water heater, the unit has a water flowing pipe running through it. This there is water pipeline passing through the water heater. The electric power supply that is provided to the unit charges up the coil or the heat exchanger that placed is inside the unit. It heats up the water that is passing through the unit in the pipeline by a convection heat transfer process. This way the water gets heated due to the heat provided by the coil or heat exchanger. This heated water is further passed on to the connected tap or shower wherever it is required.
In the case of a gas operated tankless water heater, the water is heated with the help of flame heat. These flames are achieved with the help of the burning of gas that is supplied to the unit. The heat generated by burning of the gas is absorbed by the water passing through the unit in the pipe or tube and thus getting heated to the higher temperature. This high-temperature water is then sent to the required fixture (tap or shower).
In both the tankless water heaters the water is heated at higher temperatures when required and when the unit is on standby mode. It means there is no requirement of hot water, at that time the there is no burning of gases and no heating of coil in gas and electric water heaters respectively. The heating process is again activated quickly as there is any requirement of hot water (when any hot water tap or shower is turned on).
What size tankless water heater do I need?
The tankless water heaters are available in various sizes and capacity. You need to select a particular unit according to your requirement of specifications. Various parameters are to be considered while the doing the size selection of a tankless water heater. Let’s discuss some of the points that will help you decide what size of water heater you need to buy.
Firstly, decide the maximum number of fixtures that you require to run using the water heater. Sum up the flow rates that you need from all those fixtures. This will give you an idea for the amount of flow rate that will be your requirement in gallons of minute from the water heater that you are going yo install.
Secondly, determine the temperature of hot water that you require. You can that on the basis of the hot water that you require and the capacity of the water heater to heat up the water. It will help you to decide which size of water heater you will have to purchase. But before this, you need to check what is the temperature of incoming water at your home in your region. So this will let you know what capacity of water heater you will require which will heat up the water up to the desired temperature.
Thus on the basis of this and other parameters such as quantity of water or requirement of hot water at the same time, with all this in mind, you have to select the perfectly sized tankless water heater for yourself.
Tank vs Tankless Water Heater
As the technology and innovation are developed each passing day, we get to see new methods of doing various different stuff. There are innovations in each and every field. The same is for the tank and tankless water heater evolution. Traditionally, the water heating process was done using a water storage tank. But as the technology modernized, a tankless water heater came into existence. There are various parameters on the basis of which we will compare the tank water heater with the tankless.
The key of lowering your electricity bills is the use of the most efficient electronic device. Hence the more efficient the device is the more output you will achieve in a lesser usage of electricity. Whereas if the unit is gas operated then the benefit is, more output from a lesser input of gas.
A tank water heater runs even when you are not using it or even when you are sleeping. Thus it will consume more electric power (if it is an electric unit). It will also use the gas all time long to keep the flame which will be in return a waste.
While a tankless water heater will not work when it is in the standby mode or not in use.
The cost of any unit is not just the purchase price of that unit. The cost of running and maintenance is what it is to be considered.
A tank water heater is initially less costly as compared to the tankless water heater. But the running and maintenance cost is very high.
While in tankless water heater the initial cost is high but there is negligible maintenance cost of running this unit. Hence more cost effective and efficient.
The tank water heater consists of a huge tank in which water in stored and heated. This unit consumes more space and requires a specific amount of clearance for the components as well.
Whereas the tankless water heater does not require any kind of tank. Hence it is comparatively very smaller and efficient in sizes as compared to the traditional water heater. This makes it more convenient and useful.
Hence a tankless water heater is a device with the help of which you will be able to enjoy an unlimited source of hot water. These devices offer you a constant and efficient quantity of water and with an adequate amount of flow rate. And to your profit, our team has made a significant effort to bring to you the best of the kinds of tankless water heaters.
With the help of various observational tests and expert reviews, our team has provided you the best list of tankless water heaters. Its details to make you aware of what the product or the unit actually does. This article even encounters you with the information such as how to install you a tankless water heater. Even the comparison of tank water heater with the tankless.
The main aim of this article is to pass on the knowledge of the best tankless water heaters and the benefit that you may achieve if you move towards the tankless water heaters. Enjoy the unlimited hot water with the top of the chart water heaters that we have recommended for your good. Follow us on WaterGadget for regular updates.