The A.O. Smith ProMax is a series of gas and electric water heaters. The electric models all come with a PermaGlas glass lining, a certified T&P valve, and low-watt density copper heating elements. Electric units include tall, short, and lowboy models and range in capacity from 6 to 119 gallons. The gas models feature FVIR Technology, which prevents against accidental ignition of flammable vapors, and range in capacity from 30 to 98 gallons. The ProMax line of water heaters qualifies for most utility and gas utility rebate programs.
ProMax gas units feature several venting options, including Direct Vent, which uses a one pipe dual-channel closed system; the Power Vent Higher EF, designed to deliver a greater energy factor; the Ultra-Low NOx Power Vent, which uses a combination of radiant heat and excess air to reduce emissions; and a Side Loop system available as a Direct Vent, Power Vent, and Power Direct Vent.
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