Relax with Reliable Comfort Season After Season.

Air Unlimited Heating & Cooling in Liberty and the Kansas City Metro Area knows the winters seem to go on forever, but we can help you stay cozy and warm. Our dependable Lennox® oil-fired water boiler can help. This trusty boiler will keep you and your family warm and even has the option of an attached tankless coil to provide hot water for your showers, laundry and other household needs for very little additional energy cost.

The COWB3 boiler is an efficient option for your home comfort.

COWB3 Boiler

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

  • 85.2% AFUE*
  • Optional, domestic tankless hot water coil provides hot water for very little cost throughout the cold season
  • Sealed combustion design keeps noise at a minimum
  • Swing-out burner door for simple cleaning and maintenance
  • Compatible 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 experts are always ready to serve the Liberty and the Kansas City Metro Area area. If you’re looking for a new boiler or need maintenance on your home’s boiler, call us at 816-286-7258 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.