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Ace Heater Atlas Water Heater

Ace Heaters Atlas Hydronic Water Heater

High-efficiency Condensing 

Atlas™ “A” Series condensing boilers perform dependably and quietly, offering the highest efficiency solution for space heating, domestic and process hot water, as well as low-temperature applications such as snow melting, pool heating and low temp building loops. 

Size range:

500 – 3,000 MBTU/hr 


Ideal for low-temperature heating loops

Thermal efficiency:

Up to 98%


< 9 ppm NOx 


  • Up to 7.5 to 1 turndown
  • Fully modulating PID controller
  • Mirror finish stainless steel jacket
  • Front removable coil assembly for easy serviceability
  • Single pass coil construction allows for complete deliming
  • Sealed combustion chamber for increased efficiency and reduce emissions
  • ETL listed to UL 795 and CAN1-3.1
  • CSD-1 compliant (IRI and FM optional)

Atlas Brochure