The COWB3 Boiler: Efficient Performance for Years You can’t predict winter weather, 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 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 brings us over the edge. That’s why we love the COWB3 system’s sealed-combustion design. You’ll even get quiet and draft-free heating. What makes this product even better is its simple integration with conventional radiator systems. When you buy a COWB3 boiler through your Norrell Service Experts Heating & Air Conditioning in Birmingham, 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 Norrell Service Experts in Birmingham online or call 205-267-0023 to get started.