The COWB3 Boiler: Efficient Performance for Years You never know just how harsh the winter will be, so why risk your family’s comfort? Be equipped for the worst – and cozy all season – with a Lennox® COWB3 boiler. This standard-efficiency heating system includes 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 why we love the COWB3 system’s sealed-combustion style. Plus, your heating is both quiet and draft-free. What makes the COWB3 even better is its effortless integration with conventional radiator systems. When you buy a COWB3 boiler through your Bob Brown Service Experts Heating & Air in Phoenix, you’ll get reliability, durability and expert furnace installation service. Ready to see what a new boiler can do for you? The COWB3 boiler is available in three models so you can pick the best one for your home. Schedule your free appointment with Bob Brown Service Experts in Phoenix online or call 623-243-4517 to get started.