The COWB3 Boiler: Efficient Performance for Years You can’t predict winter weather, so why risk your home’s warmth? Be ready 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 set a benchmark for fuel-efficient heating. The COWB3 includes a domestic hot water coil that also increases energy efficiency. Winter temperatures are one thing, but it’s the wind that takes winter cold to the next level. That’s why we love the COWB3 system’s sealed-combustion style. You’ll even get quiet and draft-free heating. What makes this boiler even better is its easy integration with conventional radiator systems. When you select a COWB3 boiler through your Jack Nelson Service Experts Heating & Air Conditioning in Tulsa, 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 select the best equipment for your home. Schedule your free appointment with Jack Nelson Service Experts in Tulsa online or call 918-212-8927 to get started.