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

If you’re looking for a new gas-fired steam boiler (or for an expert to fix your current steam boiler) in the Ballwin community, Holiday Heating & Air Conditioning is ready to help. We sell the Lennox® GSB8-E, which features a diverse menu of benefits.

GSB8-E Boiler

This steam boiler outshines its competition with an 82.7% AFUE rating* and notable components like a cast-iron heat exchanger and titanium burners. For years of comfortable heat, consider the GSB8-E.

  • Electronic ignition monitors water temperature and turns on the burner only when it needs to
  • Vent damper increases efficiency by closing automatically when the boiler is off
  • Thick fiberglass insulation reduces off-cycle heat and energy loss
  • Burns natural gas or can convert 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

Holiday Heating & Air Conditioning in Ballwin is is here to help you with a new high efficiency boiler! Call us at 636-391-7377 or create an appointment online.


*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.