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

With a dependable Lennox® oil-fired water boiler from TemperaturePro® in Englewood, you’ll stay warm and snug—even on winter’s most bone-chilling days. And, with the addition of an optional tankless coil, your high-efficiency boiler can also make hot water for all your household needs, for very little money during the winter months.

See what the COWB3 boiler has to offer.

COWB3 Boiler

Expect years of quiet operation from the COWB3 boiler. It features the Beckett® oil burner, which sets the standard for dependable fuel-efficient heating.

  • 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
  • Works 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 at TemperaturePro® are always ready to take care of all your boiler needs, whether you’re looking for a new boiler or boiler maintenance. Call our Englewood location at 720-446-5100 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.