A Versatile Gas-Fired Steam Boiler For Your Unique Home.

B & B Heating & Cooling in Florissant has the ideal gas-fired steam boiler to keep your home snug and comfortable for years to come. The Lennox® GSB8-E delivers remarkable benefits. Our friendly staff is here to install yours, or help you maintain your existing steam boiler.

GSB8-E Boiler

Setting it apart from other standard-efficiency boilers, this boiler earned an 82.7% AFUE* and features a cast-iron heat exchanger and titanium burners. The GSB8-E will supply your home with cozy, comfortable warmth for years to come.

  • Electronic ignition controls water temperature and lights the burner only when needed
  • Vent damper bolsters efficiency by closing automatically when the boiler turns off
  • Thick fiberglass insulation reduces off-cycle heat and energy loss
  • Burns natural gas or convertible to LP gas
  • Compatible with traditional radiator and underfloor heating systems
  • Electronic low water cut-off
  • Hefty steam chest and multiple supply connections work to eliminate noise
  • Available in seven different sizes to fit your home’s particular needs
  • 12-year limited warranty on heat exchanger, 1-year limited warranty on remaining covered parts
GSB8-E Boiler
Efficiency Rating (AFUE): up to 82.7

Reach out to B & B Heating & Cooling at 314-838-9800 for all your boiler-related needs in the Florissant area. Or, schedule an appointment with our online scheduler. We look forward to serving you!


*Annual Fuel Utilization Efficiency (AFUE) measures how efficient the appliance is in converting its fuel’s energy into heat over the course of a year.