They are much better than tanked heaters because of their versatility- you can mount them anywhere you need your water to be heated. There are quite a number of water heaters from competing brands as seen on Amazon and other online retail shops that are equally good.
How do you choose the right water heater? Whether for residential or commercial purpose, when shopping, use the flow rate and temperature control options and degree to guide you.
Regarding the flow rate, the higher the figure, the more activities needing hot water that the heater can support. For example, with the higher capacity brands, up to 4 people can shower at the same time. Generally, the higher the rate, the more expensive the heater will be.
The top brands are:
Best Electric Tankless Water Heater
Termed as the most powerful heater of its kind from Eco smart, this electric tankless 27KW heater has a 99.8 percent efficiency and the largest of its kind. The Ecosmart ECO 27 Electric Tankless Water Heater comes with a lifetime warranty and is small enough to fit anywhere.
It features self-modulating technology that allows only the right amount energy to heat your water. It also has an impressive flow of 5.3 to 6 gallons per minute. That works smoothly in places that need a constant supply of large volumes of water like spas.
At low temperatures of up to 37 degrees, it works at 3 gallons per minute, which is still pretty impressive. Another really cool feature is that it comes with a remote control that allows you to control the temperature of the water that flows out.
With that kind of flow, you can perform multiple tasks that need a lot of water concurrently. So it is best suited for commercial establishments. It received a 4 star rating on The Home Depot. Users loved that it saves you a great deal on heating costs and saves you the hassle of tanked heater installation.
Best Electric Tankless Water Heater for Hard Water
This water heater from Rheem – The Rheem RTE 13 Electric Tankless Water Heater, 4 GPM received a 4 star rating on Amazon.
It is has a 13KW and 240 volt rating, and measures 10 by 7.25 inches with an LED display. It is light and can be used practically anywhere. The minimum activation flow rate is 0.4 gallons per minute.
Those who bought it praised its energy saving feature, its ability to give a constant supply of hot water and the fact that’s it is instantaneous. Its compact size (9*10*5 inches) also appealed to reviewers, and despite this unconventionally small size, it was able to heat water perfectly well.
Normally shower heads require a flow of 2 gallons per minute (GPM), but this Rheem water heater provides twice that. Users also loved it for saving them the cost of setting up a tanked water heater, which would force them to spend twice as much. With such instant heaters, you save a lot of water, because you don’t have to wait for gallons of water to drain before you get the hot water.
Best Tankless Water Heater under $400
This 18KW Electric heater is a winner. With a 4 star rating, the Ecosmart ECO 18 Electric Tankless Water Heater comes in different sizes convenient for all homeowners and comes with impressive smart technology that allows you to control temperatures digitally. If you are buying this heater to use it at home, you get a lifetime warranty.
Reviewers commented that it was easy to install, supplied enough hot water for multiple tasks like laundry and dishwashing, and the LED display panel gives it an edge.
The smart technology feature allows the user to increase temperatures by 1 degree. The lifetime warranty is an attractive package, so you get some piece of mind as you use it.
Best Mini-Tank Water Heater
With an impressive 4.5 star rating, this water heater, Bosch GL4S Ariston 4-Gallon Point-of Use Indoor Electric Mini-Tank Water Heater simply stands out from the rest-both visually and functionally.
It features a half inch inlet and outlet connection and can fit everywhere-install it under your sink and it will always give you hot water.
Put it in your kitchen, and doing dishes will be a breeze.
Best Natural Gas Tankless Well Water Heater
Manufactured by Rinnai, this brand promises you enhanced and improved scale detection, meaning it lasts longer, and you also get a longer warranty for your water heater. The Rinnai RL94iN Natural Gas Tankless Water Heater, 9.4 Gallons per minute has an inbuilt temperature lock function, which is an ingenious idea.
It measures 23 inches in length, is 14 inches wide and 9 inches in depth. At 21 kg, this heater is optimized to work indoors. Its minimum activation rate is 1.5 litres/0.4 gpm. For residential usage, it works between 98-140 degrees, and for commercial purposes, it goes up to 185 degrees.
Reviewers on Amazon loved that it could run up to 5 units at the same time and worked so quietly. It is also apparently very easy to effect temperature changes on it.
As seen from user and expert reviews, the top factors that would make a shopper choose one brand over the other are its capacity, flow rate, and how much it saves them.
Once these are set, then the price is no issue, because whatever it costs, it saves you a lot of other things in the long run.