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

WM J Kraus & Son in Keokuk has an excellent gas-fired steam boiler to keep your home snug and comfortable year after year. The Lennox® GSB8-E comes with remarkable benefits. Our experts are happy 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 deliver cozy, comfortable warmth heating season after heating season.

  • Electronic ignition controls water temperature and turns on the burner only when needed
  • Vent damper boosts efficiency by closing automatically when the boiler turns off
  • Thick fiberglass insulation minimizes off-cycle heat and energy loss
  • Burns natural gas or can be converted to LP gas
  • Will work with traditional radiator and underfloor heating systems
  • Electronic low water cut-off
  • Big steam chest and multiple supply connections reduce 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

Call WM J Kraus & Son at 319-524-3714 for all your boiler-related needs in the Keokuk area. Or, set up 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.