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Ultimate Guide to Under Sink Water Heaters

sink with hot water

Getting hot water in an instant is essential for most households, especially for those who wanted to get a hot tea immediately before going to work in the morning, or those who needed it for cooking without the need to boil water in the stove. The world is moving fast nowadays, as we now have faster internet connections, faster dry-cleaners, and even faster deliveries. Now, companies responsible for creating household water heaters have developed under sink water heaters that automatically supplied the kitchen or the bathroom with instant hot water. What are these under sink water heaters? And how are they actually different from the conventional ones? Let us found out as we take a look at the ultimate guide under sink water heaters.

What is an Under Sink Water Heater?

The under sink water heater, as its name suggests, is an electric unit that is installed under a sink and is connected to the pipes in between the sink and the house’s water supply. By being connected in between those two ends, the under sink water heater automatically heat up the water coming from the supply before it reaches the sink’s faucet. In addition, most under sink water heaters would store hot water inside a small compartment and will be readily available when it is needed. Under sink water heaters are also known to be energy efficient, as they take less power to function compared to conventional water heaters.

While most households would have a main water heater, some of these main water heaters would fail to deliver hot water in the kitchen if it is too far away, as the hot water that it produces eventually turns cold before it reaches the sink.

sink cabinet

Types of Under Sink Water Heaters

There are two main types of under sink water heaters that you can install on your home. The choice as to what type of water heater you need for your sink depends on how much power you can let the unit consume, as well how fast you want the hot water to get to the faucet.

Tank Heater

The first type of the under sink water heater is the tank, which is basically a heater that has a tank or a compartment where it will store hot water. The tank water heater would usually heat up a small amount of water while it is turned on, and then it will store this hot water until it is released by someone through the sink. The average amount of water that tank under sink water heaters store is 3 to 7 gallons, which is sufficient for providing hot water for two to three people in the morning.

The tank under sink water heater is easier to install than the second type of water heater because you would only need to connect it to the water supply and to the sink. However, one downside to this type of under sink water heater is that it only has a limited supply of water, which means that you will have to reheat another small amount of water after using the one that it stored.

Tankless Heater

The second type of under sink water heater is called tankless, and as its name already implies, it doesn’t have a tank or compartment like the first type. However, it will automatically heat up the running water on the supply and through the sink, which means that you will have a steady supply of hot water without reheating anything.

In addition, if there is no water flowing through the pipes, the tankless water heater will stay turned off until your turn on the faucet. Also, given that it doesn’t have a tank to store hot water, the tanklessheater is relatively smaller compared to the first type. Unfortunately, the drawback to the tankless heater is that it can be pretty complicated to install, as you would need to connect it properly to the water supply by calibrating the pressure and checking the wirings before turning it on. But, because its con is only on its installment process, there will be a lot more pros to the tankless heater once you get it running.

Product
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Where to Buy

Ariston Andris 2.5 Gallon 6-Year 120-Volt Corded Point of Use Mini-Tank Electric Water Heater

Bosch Electric Mini-Tank Water Heater Tronic 3000 T 7-Gallon (ES8) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted

Camplux ME40 Mini Tank Electric Water Heater 4-Gallon with Cord Plug,120 Volts

EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

Camplux Tankless Water Heater Electric, TE27 27kW Whole House Instant Water Heater, On Demand Electric Water Heater Digital Display and Remote Control, 240V, Black

 

The Best Under Sink Water Heaters

There are dozens of different models, units, and brands of under sink water heaters for you to choose from, but there are only a few that could be considered as the best of the best in providing hot water in households. Here are some of the best tank and tankless under sink water heaters that you can buy online.

Ariston Andris 2.5 Gallon Mini-Tank

The Ariston Andris 2.5 Gallon Mini-Tank may probably be one of the best cheap under sink water heater that you can buy in the market, as you will be able to get a great water heater in just a fraction of the price of other units found in appliance stores. Besides being able to provide 2.5 gallons of hot water before reheating, the Ariston Andris 2.5 Gallon also has an easy installation system, which means that you can install the water heater on your own without the need to call for a plumber. Despite being a tank water heater, the Ariston Andris 2.5 has a relatively small size, as it has compact dimensions, which is 14.25 inches in width, 14.25 inches in height, and 10.75 inches in diameter.

Bosch Tronic 3000 T 7 Gallon Mini-Tank

The Bosch Tronic 3000 T is a much bigger under sink water heater than the Ariston Andris 2.5 Gallon because it can store 7 gallons of water, although its size is only just a little bit bigger than the Ariston heater. Because of its higher water capacity, the Bosch Tronic 3000 T price is almost two times the price of the Ariston, but what you get for a more expensive water heater is a larger tank that is beneficial if you don’t want to reheat water every now and then. Additionally, the Bosch Tronic 3000 T can be installed horizontally and vertically, but for the horizontal position, it would only be able to accommodate 5.1 gallons of water.

Camplux ME40 Mini Tank

For people who want a heating unit that is a step up from the Ariston Andris 2.5 Gallon without spending too much money on the Bosch Tronic 3000 T, the perfect in-between model is the Camplux ME40 Mini Tank, which has a compartment that can store 4 gallons of water. The Camplux ME40 Mini Tank is a glass-lined tank that is durable enough to last for more than ten years, so you wouldn’t have to worry about replacing it any time soon once you install it under your sink. However, since it has a bigger tank, it also has a bigger size overall, so be prepared to provide plenty of space for this unit if ever this will be your chosen water heater.

Eco Smart ECO 11 Tankless Water Heater

Moving on to the tankless water heaters, the first one we have is the EcoSmart ECO 11, an electric water heater that can save you up to 60 percent of your water heating cost at home because of its efficiency to give you instant hot water without consuming too much power. In addition, the EcoSmart ECO 11 also has a self-modulating system that allows the unit to control the water’s temperature without the need for the owner to tweak it. Because it is a tankless heater, it has a more compact appearance and size compared to the tank heaters, thus allowing you to save more space under the sink or inside the sink cabinet.

Camplux TE27 Tankless Water Heater

Another great tankless water heater is the Camplux TE27, which has a compact design and has a multi-angled mounting feature that allows you to place it almost anywhere under the sink or in any other part of the kitchen or bathroom. To access its energy-saving capabilities, the Camplux TE27 needs to be connected to 3* 50A 2 poles circuit breaker that should be close to the unit’s outlet. Moreover, the Camplux TE27 has a remote controller that allows you to control the water’s temperature even if you are far away from the unit.

Besides these five under sink water heaters, there are also some great ones out in the market that may be better than the ones mentioned in this guide. However, for you to be sure that what you are getting is great, you can just choose one of the five listed above, but you can still test out other under sink water heaters in stores before buying them.

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