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Aquanta and its smart water-heater controller are back with new promises to slash your energy bill

Michael Brown | May 25, 2016
Like the Nest thermostat, Aquanta’s water-heater controller learns your usage patterns and will heat water only when you need it.

Aquanta controller
Credit: Aquanta

According to the U.S. Department of Energy, heating water accounts for fully 18 percent of the typical household’s annual energy consumption, second only to the amount of energy consumed to heat and cool their residence. And because the typical tank water heater keeps 40 to 50 gallons of water piping hot 24 hours a day, seven days a week—whether or not anyone is home to use it—20 to 50 percent of the energy is completely wasted.

Following an aborted crowd-funding campaign in late 2014, Aquanta (formerly Sunnovations) is now taking pre-orders on its Aquanta “learning” water-heater controller, which it expects to ship in July. In a note to its would-be backers when it cancelled its Kickstarter campaign, the team said while its campaign was unsuccessful, the exposure it garnered lead to “a sizable number of large and exciting strategic and distribution partners to contact us.”

Fast forward 18 months and Aquanta CEO Matthew Carlson tells me his company has “had test units in the field for more than a year.” Actually, the only thing that’s surprising about this announcement is that there aren’t already more products like it. There are several new water heater models on the market with “smart” features, but when you consider than this type of appliance can last anywhere from eight to 12 years if properly maintained, it doesn’t make a lot of sense to toss a working model just to buy one that’s connected to the cloud. The same goes for replacing a conventional tank water heater with an on-demand model—those are really pricey.

Energy consumption 
According to the U.S. Department of Energy, heating water is the second-most energy-intensive activity. Credit:U.S. Department of Energy

And while Sears recently introduced a water-heater controller, it can only be used to retrofit a limited number of Sears’ models. Finally, there are old-fashioned timers that can that can turn an electric (not gas or propane) water heater on and off according to a daily clock, but they don’t have any real intelligence built into them.

In promising to deliver a “Nest-like” water-heater controller, Aquanta says its device will learn your family’s hot-water usage patterns over time and will heat water only during the times it’s typically needed, be that in the morning for showers, in the early evening for baths, and later at night for baths or perhaps weekend afternoons for laundry.

The Aquanta sits on top of your water heater. You install a probe behind (and in-line with) the water heater’s T&P port (where its temperature- and pressure-relief valve is connected) and connect the probe to the controller. A second sensor gets taped to the cold water supply, and there’s an optional third probe that can detect a water leak from a malfunctioning heater.


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