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

All Seasons Heating & A/C Co in Bloomington knows the winters seem to drag on for months, but we can help you stay snug and warm. Our dependable Lennox® oil-fired water boiler is just what you need. This trusty boiler will keep your home comfortable and can accommodate an attached tankless coil to produce hot water for your showers, laundry and other household requirements for a low additional energy cost.

For an efficient home comfort option, look at the COWB3 boiler.

COWB3 Boiler

The Beckett® oil burner sets the example for reliable, fuel-efficient heating. That’s exactly why it’s used in the COWB3 boiler. You and your family can plan on years of almost silent performance from this boiler.

  • 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 a minimum
  • Swing-out burner door for simple 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 professionals are always ready to serve the Bloomington area. If you’re looking for a new boiler or need maintenance on your home’s boiler, call us at 812-332-9100 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.