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

With a sturdy Lennox® oil-fired water boiler from Watts Electric & A/C Inc in Columbia, you’ll stay warm and snug—even on winter’s harshest days. And, 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.

See what the COWB3 boiler has to offer.

COWB3 Boiler

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

  • 85.2% AFUE*
  • Optional, domestic tankless hot water coil delivers hot water for almost no cost throughout the cold season
  • Sealed combustion design keeps noise very low
  • Swing-out burner door for simple 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 Watts Electric & A/C Inc are available to help with all your boiler needs, whether you need a new boiler or boiler maintenance. Call our Columbia location at 601-736-7362 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.