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 existing steam boiler) in the Marshalltown community, B & G HVAC is here to help. We sell the Lennox® GSB8-E, which comes with a diverse menu of benefits.

GSB8-E Boiler

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

  • Electronic ignition controls water temperature and ignites the burner only when needed
  • Vent damper bolsters efficiency by closing automatically when the boiler shuts off
  • Thick fiberglass insulation helps minimize off-cycle heat and energy loss
  • Burns natural gas or convertible to LP gas
  • Will work with traditional radiator and underfloor heating systems
  • Electronic low water cut-off
  • Large steam chest and multiple supply connections reduce noise
  • Available in seven different sizes to fit your home’s individual 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

B & G HVAC in Marshalltown is always ready to help you with a new high efficiency boiler! Call us at 641-752-3429 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.