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 throughout the 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 maybe the biggest reason why we love the COWB3 system’s sealed-combustion design. Not only is your heating quiet, it’s also draft-free. What makes the COWB3 even better is its effortless integration with conventional radiator systems. When you buy a COWB3 boiler through your Francis Home Environment Service Experts Heating & Air Conditioning in Ottawa, you’ll get reliability, durability and expert furnace installation service. Ready to see what a a COWB3 boiler can do for you? This product is available in three models so you can select the best one for your home. Schedule your free appointment with Francis Home Environment Service Experts in Ottawa online or call 613-317-2303 to get started.