Tankless Water Heaters with EZ-Link Featureby Rheem

The maker's second-generation tankless water heating products include the addition of an intermediate-size 5.3-gpm model, and a 7.4-gpm direct-vent model that alleviates indoor air quality problems by bringing combustion air in from the outside. The EZ-Link feature connects two side-by-side tankless units by a communication cable, letting them operate as a single water heater. A 140-degree thermostat and .66-gpm minimum activation flow are now standard and an auto-on feature automatically restores power after an outage. 334-213-3800. www.rheem.com.