Relax with Reliable Comfort Season After Season.

McFadden Heating & Cooling in Dresden knows the cold seasons seem to be endless, but we can help you stay cozy and warm. Our reliable Lennox® oil-fired water boiler can help. This boiler will keep you and your family comfortable and can be equipped with an attached tankless coil to heat water for your showers, laundry and other household requirements for not much 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 the reason why it’s used in the COWB3 boiler. Your family can plan on years of nearly noiseless performance from this boiler.

  • 85.2% AFUE*
  • Optional, domestic tankless hot water coil provides hot water for a very small cost throughout the wintertime
  • Sealed combustion design keeps noise at an unnoticeable level
  • Swing-out burner door for simple cleaning and maintenance
  • Functions 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 are always ready to serve the Dresden area. If you’re looking for a new boiler or need maintenance on your existing boiler, call us at 1-866-781-0111 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.