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

Farnell Mechanical, Inc. in Opelika knows the winters seem to be endless, but we can help you stay cozy and warm. Our reliable Lennox® oil-fired water boiler is just what you need. This trusty boiler will keep you and your family warm and can be equipped with an attached tankless coil to heat water for your showers, laundry and other household needs for very little additional energy cost.

Consider the COWB3 boiler as an efficient option for your home comfort.

COWB3 Boiler

The Beckett® oil burner sets the standard for reliable, fuel-efficient heating. That’s the reason why it’s used in the COWB3 boiler. Your family can plan on years of virtually noiseless performance from this boiler.

  • 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 an unnoticeable level
  • Swing-out burner door for easy cleaning and maintenance
  • Functions 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 are here to serve the Opelika area. If you’re looking for a new boiler or need maintenance on your existing boiler, call us at 334-524-2458 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.