Page 20 - Green Builder April 2017 Issue

HEATING, COOLING AND WATER HEATING
18 GREEN BUILDER Special Awards Issue 2017
12-32 GB 0417 Hot 50.indd
Bosch Greentherm 9000 Series
Tankless Water Heater
Tankless, natural gas-powered water heaters have been popular in Europe for more than two
decades. Comparatively, their popularity has only recently begun to take off in the U.S. Bosch
Thermotechnology Corp. is hoping to continue that upswing with its Greentherm 9000 Series of
highly efficient, plug-and-play tankless condensing gas water heaters.
The lineup of nine Greentherm 9000 water heaters—six of which are debuting this spring—have
an industry-high thermal efficiency of 100 percent, and an energy factor of 0.99. They do not
require a dedicated return line, which makes for faster hot water at the tap, less wasted water waste
and an estimated savings of 11,000 gallons of water annually per household.
Meanwhile, installers will appreciate its easy-install design, which includes top-mounted water
connections, an OptiFlow combustion management system that automatically adjusts for various
installation conditions, and a built-in recirculation pump. It easily integrates with solar energy
systems.
Also, the water heater’s space-saving design means the unit won’t dominate what is usually an
already-packed garage or laundry area. It can be controlled remotely via Wi-Fi to help cut energy
costs. And the machines are capable of self-diagnostics for quick troubleshooting.
Rheem Prestige
Series Hybrid Electric
Water Heater
Rheem’s new Prestige Series Hybrid Electric Water Heater
is warming up consumer attitudes. The unit’s touted high-
speed hot water system—with first-hour delivery of 70 to 90
gallons, depending on water heater size—far outpaces that
of standard electric models.
An Energy Star-rated device, Prestige has an Energy
Factor of 3.5, and cuts hot water energy use by up to 73
percent compared to a standard model of similar size. A
homeowner will typically save about $4,000 in energy
costs over 10 years, and the unit pass for itself in less than
two.
But it’s not all about money. The Prestige models feature
multiple operation modes, including energy saver, high
demand and vacation, ultra-quiet usage, a best-in-class,
widest ambient operating range (37 to 145 degrees
Fahrenheit), and an LCD screen with built-in water sensor
alert and audible alarm.
The water heater utilizes the EcoNet Smart Home
System, which allows homeowners to control and manage
heating, cooling and water heating products via a mobile
app or through a wall-mounted control center. EcoNet
notifies homeowners when the equipment needs service
and provides instant diagnostics, including leak detection.
Rheem’s EcoNet-enabled water heaters are compatible
with Nest products, Wink and Logitech’s Harmony hub.
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