Lennox 70,000 BTU 96% High Efficient Dual Stage Furnace ML296V070

At every turn, the Lennox ML296V090 gas furnace is designed to be the most energy-efficient furnace in its class. A variable-speed fan keeps temperature swings to a bare minimum. Two-stage heating saves gas by adjusting the flame size based on demand. With a 96% efficiency rating, the ML296V gas furnace uses 2/3 less energy than competitive single-speed units so you pay for perfectly heated air, not wasted energy.