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

With a sturdy Lennox® oil-fired water boiler from Tri County Air Care LLC in Dallas, you’ll stay warm and snug—even on winter’s most bitter days. Plus, with the addition of an optional tankless coil, your high-efficiency boiler can also provide you with hot water for all your household needs, for very little money during the winter months.

Read more about the COWB3 boiler.

COWB3 Boiler

You can expect years of ultraquiet heating from the COWB3 boiler. It includes the Beckett® oil burner, which sets the standard for reliable fuel-efficient heating.

  • 85.2% AFUE*
  • Optional, domestic tankless hot water coil provides hot water for almost no cost throughout the wintertime
  • Sealed combustion design keeps noise at a minimum
  • Swing-out burner door for easy cleaning and maintenance
  • Compatible with traditional radiator systems
  • Cast-iron heat exchanger for lasting durability
  • 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 Tri County Air Care LLC are always ready to assist with all your boiler needs, whether you want a new boiler or boiler maintenance. Call our Dallas location at 469-617-3437 today, or schedule 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.