Relax with Reliable Comfort Season After Season.

With a sturdy Lennox® oil-fired water boiler from Pinnacle HVAC LLC in Homer Glen, you’ll stay warm and snug—even on winter’s most bitter days. Also, with the addition of an optional tankless coil, your high-efficiency boiler can also heat water for all your household needs, for only a small cost during the winter months.

Find out more about what the COWB3 boiler has to offer.

COWB3 Boiler

You can expect years of near-silent heating from the COWB3 boiler. It features the Beckett® oil burner, which sets the standard for dependable fuel-efficient heating.

  • 85.2% AFUE*
  • Optional, domestic tankless hot water coil provides hot water for almost no cost throughout the winter months
  • Sealed combustion design keeps noise at a minimum
  • Swing-out burner door for easy cleaning and maintenance
  • Works with traditional radiator systems
  • Cast-iron heat exchanger for lasting performance
  • 20-year limited warranty on heat exchanger, 1-year limited warranty on remaining covered parts
COWB3 Boiler
Efficiency Rating (AFUE): up to 85.2

Our boiler professionals at Pinnacle HVAC LLC are available to take care of all your boiler needs, whether you want a new boiler or boiler maintenance. Call our Homer Glen location at 708-301-0170 today, or set up your 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.