Relax with Reliable Comfort Season After Season.

Red Dog Cooling, Heating, & Plumbing in Selbyville knows the colder months seem to drag on for months, but we can help you stay cozy and warm. Our dependable Lennox® oil-fired water boiler can help. This trusty boiler will keep you cozy and even has the option of an attached tankless coil to heat water for your showers, laundry and other household requirements 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 exactly why it’s used in the COWB3 boiler. You and 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 almost no cost throughout the cold season
  • Sealed combustion design keeps noise at a minimum
  • Swing-out burner door for painless cleaning and maintenance
  • Works 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 pros are always ready to serve the Selbyville area. If you’re looking for a new boiler or need maintenance on your existing boiler, call us at 302-436-2922 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.