Cleaver-Brooks - Complete Boiler Room Solutions
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Model M5M

Membrane Wall Watertube

  • Steam or hot water  
  • 2,000 to 6,000 MBTU/hr 
  • Steam to 500 psig
  • Achieves <20 ppm NOx and <10 ppm CO
  • Premix burner technology 

Designed for steam applications up to 500 psig, hydronic comfort heating to 180°F or process water temperature to 410°F, this watertube boiler delivers big in a compact design, yet does not consume extra real estate.


Whether your application is a small batch load for food processing, or you are considering a hybrid heating system, the M5M provides an environmental solution to meet today’s energy and emissions standards. Equipped with a premix surface combustion burner, the M5M is environmentally friendly out of the box.


  • Integral burner for maximum efficiency
  • Linkageless control automatically adjusts the air/gas mixture
  • Maintains peak operating efficiency during low system demand
  • Increases boiler room floor space by 50%


For .dwg and .dxf drawing viewer download the AutoDesk TrueView.

Select one of the models listed below.


  •  Small Footprint 
  •  Lower Emissions 
  •  Reduced Burner Control Maintenance


  •  Process Steam 
  •  Building Heat 
  •  Sterilization 
  •  Humidification 
  •  Valve Testing 
  •  Laundry and Dry Cleaning