G40 Gas Furnace ◆ 80% AFUE Lennox’ merit® Series Home Comfort Systems G40 Mid-efficiency gas furnace
Innovation never felt so good.™ Merit® Series G40 Gas Furnace Efficient, consistent warmth—year after year Mid-efficiency levels save you money, compared to older furnaces Year-round comfort – Built to deliver outstanding comfort, year after year. Durable, high-quality design for long-lasting performance Duralok® Heat Exchanger – Made of high-quality, patented ArmorTuf™ aluminized steel. Life-tested to 2-1/2 times agency requirements (ANSI Standard Z21.47) for long product life and durability.
