An extensive range of atmospheric water heaters to suit most larger hot water systems. The ADM has 2 access covers for waterside tank maintenance. The stainless steel burner is available for natural or LP gas.


  • Efficient, automatic hot surface igniter
  • Removable control column for convenient servicing
  • Frost protection thermostat
  • Stainless steel burner for natural or LP gas
  • Two access covers for comprehensive waterside tank maintenance

Ecodesign specifications

ADM 40 50 60 80 90 115 135
Load profile: XXL XXL XXL XXL 3XL 3XL 3XL
Energy efficiency class: B B B B
Energy efficiency: 62% 62% 61% 61% 58% 57% 60%

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As a manufacturer of high-end appliances A.O. Smith claims to maximize user convenience and comfort. Therefore, we must be able to support and guarantee that our products run impeccably. Customer satisfaction throughout the service life of our products, that´s A.O. Smith´s promise.
By offering a comprehensive range of services (such as sizing, commissioning, service and maintenance) A.O. Smith validates that promise.