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Challenger Solo Boiler

High Efficiency Space Heating in a Compact Package - CC85s, CC105s, CC125s, CC150S

The Challenger Solo Boiler features a unique insert cast heat exchanger that provides the light weight and efficient heat transfer of aluminum with the durability of copper waterways. The Challenger Solo Boiler is designed to fit the needs of today's energy efficient homes with inputs of 85, 105, 125, and 145 MBH. The Challenger is not only energy efficient with an AFUE of up to 95%, but space efficient as well.

The Challenger Solo boiler can provide both heat and hot water when paired with an indirect water heater such as the Smart product line.


  • Energy efficient with up to 95% AFUE
  • Dual material heat exchanger with glycol compatible copper waterways
  • Advanced control with near 4:1 modulation and standard outdoor reset
  • Twin pipe (PVC, CPVC, PP, or AL29-4C) or Concentric venting
  • Compact size for closet installation
  • Whisper-quiet operation
  • EZ-Install piping bracket
  • Optional Timesaver primary secondary piping with or without pump