Relax with Reliable Comfort Season After Season.

With a sturdy Lennox® oil-fired water boiler from Custom Sheetmetal & Roofing, Inc. in Topeka, you’ll stay warm and snug—even on winter’s most bitter 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.

Read more about the COWB3 boiler.

COWB3 Boiler

You can expect years of ultraquiet operation from the COWB3 boiler. It features the Beckett® oil burner, which is the standard for reliable fuel-efficient heating.

  • 85.2% AFUE*
  • Optional, domestic tankless hot water coil delivers hot water for very little cost throughout the cold season
  • Sealed combustion design keeps noise at an unnoticeable level
  • Swing-out burner door for painless cleaning and maintenance
  • Functions with traditional radiator systems
  • Cast-iron heat exchanger for lasting durability
  • 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 Custom Sheetmetal & Roofing, Inc. are available to assist with all your boiler needs, whether you want a new boiler or boiler maintenance. Call our Topeka location at 785-357-6200 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.