The COWB3 Boiler: Efficient Performance for Years You can’t predict winter weather, so why risk your family’s comfort? Be ready for the worst – and cozy throughout the season – with a Lennox® COWB3 boiler. This standard-efficiency heating system uses a Beckett® oil burner, the product that raised the bar for fuel-efficient heating. A domestic hot water coil takes your energy efficiency further by providing hot water at virtually no additional cost. Winter temperatures are one thing, but it’s the wind that really chills our bones. That’s on reason why we love the COWB3 system’s sealed-combustion design. You’ll even get quiet and draft-free heating. What makes the COWB3 even better is its easy integration with classic radiator systems. When you purchase a COWB3 boiler through your A-PLUS Service Experts Heating & Air Conditioning in Waldorf, you’ll get reliability, durability and expert furnace installation service. Ready to see what a a COWB3 boiler can do for you? The COWB3 boiler is available in three models so you can pick the best equipment for your home. Schedule your free appointment with A-PLUS Service Experts Heating & Air Conditioning in Waldorf online or call 301-747-3140 to get started.