Armstrong Air oil furnaces deliver a high level of home comfort. The Enhanced Series is equipped with top-of-the-line features, including variable speed blower motors, Beckett & Reillo burners, ceramic combustion chambers, self-diagnostics, and solid-state ignition. The series is available in a variety of easy-to-install configurations and have AFUE ratings up to 84 percent. Lifetime limited warranties on the heat exchanger and five-year limited warranties on parts available.

Armstrong Air, 215 Metropolitan Dr., West Columbia, SC 29170; 800-448-5872;