The COWB3 Boiler: Efficient Performance for Years You can’t predict winter weather, so why risk your family’s comfort? Be prepared for the worst – and cozy all season – with a Lennox® COWB3 boiler. This standard-efficiency heating system uses a Beckett® oil burner, the product that set the standard 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 brings us over the edge. That’s why we love the COWB3 system’s sealed-combustion design. Not only is your heating quiet, it’s also draft-free. What makes this product even better is its easy integration with traditional radiator systems. When you purchase a COWB3 boiler through Service Experts Heating & Air Conditioning, you’ll get reliability, durability and expert furnace installation service. Ready to see what a new boiler can do for you? This product is available in three models so you can choose the best fit for your home. Schedule your free appointment with Service Experts online or call 866-397-3787 to get started.