Proline Atmospheric Gas Water Heaters

ProLine® Atmospheric Vent Water Heaters

Top Service Items     •     Additional Resources     •     Related Videos

The Residential ProLine® Series Atmospheric Vent gas water heaters are designed to deliver an economical performance that can lower your energy bills and also provide long-lasting value. Our Commercial-Grade atmospheric gas models are built with tough Coregard® stainless-steel cored anode protection, full-flow brass drain valves, advanced gas controls, and much more.

What it means to be commercial-grade – As an industry leader in commercial water heating, A.O. Smith understands the importance of abundant and reliable hot water delivery in hospitals, hotels and restaurants. We require the same standard of durability and performance in our ProLine residential products. There’s nothing standard about commercial-grade.

  • Features and Benefits
  • How It Works
  • Application and Installation



Top Service Items
  • No Hot Water
  • Lighting the Pilot Light
  • Draft Test
  • Status Code Continuous Light
  • Status Code 1 Flash
  • Status Code 2 Flash
  • Status Code 4 Flash
  • Status 5 Flash
  • Status Code 7 Flash
  • Status Code 8 Flash
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Additional Resources
  • PDF – Mechanical Residential Gas Valve Troubleshooting
  • PDF – Electronic Residential Gas Valve Troubleshooting
  • Product Selling Script
  • Counter Loop
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Related Videos


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