Relax with Reliable Comfort Season After Season.

With a dependable Lennox® oil-fired water boiler from Farnell Heating & Air Conditioning Inc in Mobile, you’ll stay warm and snug—even on winter’s most bone-chilling 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

Expect years of ultraquiet performance from the COWB3 boiler. It includes the Beckett® oil burner, which is the standard for dependable fuel-efficient heating.

  • 85.2% AFUE*
  • Optional, domestic tankless hot water coil provides hot water for very little cost throughout the winter months
  • Sealed combustion design keeps noise very low
  • Swing-out burner door for easy cleaning and maintenance
  • Compatible with traditional radiator systems
  • Cast-iron heat exchanger for lasting reliability
  • 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 experts at Farnell Heating & Air Conditioning Inc are always ready to take care of all your boiler needs, whether you want a new boiler or boiler maintenance. Call our Mobile location at 251-471-2674 today, or make 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.