American Standard AS-50 50-Gallon Natural Gas Water Heater
American Standard AS-50 50-Gallon Natural Gas Water Heater Review
The American Standard AS-50 50-Gallon Natural Gas is an A.O. Smith-built residential gas tank sold under the American Standard brand. Primary distribution through hardware stores and plumbing supply houses.
Specs: 40,000 BTU input, UEF 0.58, 81-gallon FHR, 6-year tank and parts warranty. Atmospheric vent through B-vent. Electronic ignition. Magnesium anode rod.
The American Standard line sits between A.O. Smith's budget Reliance brand and the mainstream ProMax/Conservationist lines. Functionally equivalent to A.O. Smith ProMax with American Standard branding for hardware-store channels.
Brand recognition is the primary buying motivation — many homeowners associate American Standard with their plumbing fixtures (sinks, toilets, faucets). About $549 unit, $1,250 installed.
Right buyer: hardware-store / plumbing-supply-house shopper with American Standard brand preference. For longer ownership horizons (10+ years), A.O. Smith Signature Premier or Rheem Performance Platinum (both 12-year warranty) is the better economic choice.