Reliability and Comfort Every Cold Season Can Be Yours with an Oil-Fired Water Boiler.

With a sturdy Lennox® oil-fired water boiler from Kowalski Heating & Cooling in McMurray, you’ll stay warm and snug—even on winter’s most bitter days. Also, when you add an optional tankless coil, your high-efficiency boiler can also make hot water for all your household needs, at virtually no cost during the winter months.

See what the COWB3 boiler has to offer.

COWB3 Boiler

You will enjoy years of quiet operation 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 cold season
  • Sealed combustion design keeps noise at an unnoticeable level
  • Swing-out burner door for simple cleaning and maintenance
  • Compatible 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 pros at Kowalski Heating & Cooling are available to assist with all your boiler needs, whether you’re looking for a new boiler or boiler maintenance. Call our McMurray location at 724-745-7404 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.