Buderus – SB745WS Boiler Commercial Condensing Boilers

commercial boilers

Commercial Boiler Model Buderus SB745WS

With this boiler, project costs are reduced due to simplified piping.

With inputs ranging from 3003 to 5443 MBH, the Buderus SB745WS Series has an increased maximum operating pressure to 80 psi, and a 10-year non-prorated limited warranty.

A full three-pass flue design extracts latent heat and maximizes overall efficiency.

Advantages at a Glance

  • Ultra high efficiency – up to 98%
  • Multi-fuel options available: NG, LP, ultra-low sulphur oil and heating oil type 2
  • Pressure rating up to 80 psi
  • Full-swing openings of the main combustion chamber and fire tube heating surface assure easy inspection and service


  • No restriction on return temperature and flow rates
  • High mass design for new construction and retrofit applications
  • Titanium infused stainless steel fire tubes for long life
  • Dual Returns provide unique design opportunities
  • 2,738 to 5,293 MBH output
  • Top water connections for easy access and serviceability