Lennox Product Details

OWB86 Boiler

Standard efficiency, oil-fired water boiler



    Here are some of the top features of the OWB86:

    • 86% of fuel is converted into usable heat.
    • By installing an optional tankless coil, you can enjoy hot water for regular use in your home during winter months, without spending extra money on energy.
    • This boiler’s cast-iron heat exchanger offers dependable operation.
    • This boiler’s sealed combustion design provides quiet, safe, draft-free heating. It also integrates easily into your home’s existing radiator system for continuous comfort all winter long.

Energy Efficiency

    • Beckett® oil burner—sets the standard for reliable, fuel-efficient heating
    • Domestic hot water coil—optional tankless coil provides hot water for virtually no cost throughout the colder months

Home Comfort

    • Sealed-combustion design—provides quiet, healthy and draft-free heating
    • Easy integration—works with traditional radiator systems to provide precise heating comfort, regardless of outdoor temperatures


    • Cast iron heat exchanger—designed for long-lasting durability


OWB86 Boiler Homeowners Manual
OWB86 Boiler Product Brochure