Everyones Home is Unique and Keystone Heating & Air Conditioning Co., Inc Has the Versatile Gas-Fired Steam Boiler For You.

Keystone Heating & Air Conditioning Co., Inc in Racine has an excellent gas-fired steam boiler to keep your home cozy and comfortable for years to come. The Lennox® GSB8-E provides exceptional benefits. Our team is ready to install yours, or help you fix your current 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 oversees water temperature and turns on the burner only when needed
  • Vent damper bolsters 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 work to eliminate noise
  • Available in seven different sizes to fit your home’s unique 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 Keystone Heating & Air Conditioning Co., Inc at 262-358-9468 for all your boiler-related needs in the Southeast Wisconsin 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.