How much a new Lennox furnace installed costs in 2026 depends on model, size, and efficiency, ranging from 3,000 to 9,000 dollars including furnace, labor, permit, and removal of old furnace. For entry level, Lennox Merit ML296V two-stage 96 percent AFUE 60,000 to 100,000 BTU costs 3,000 to 5,000 dollars installed, offering two-stage operation and 20-year heat exchanger warranty, good for budget. For mid-range, Lennox Elite EL296V two-stage variable speed 96 percent AFUE costs 4,000 to 6,500 dollars installed, with variable speed blower for quiet operation at 68 decibels and better comfort, most popular model. For premium, Lennox Elite EL296E and Signature SLP99V modulating 99 percent AFUE most efficient costs 5,500 to 9,000 dollars installed, with modulating gas valve that adjusts from 35 to 100 percent capacity for ultimate even heating and SilentComfort quiet at 60 decibels, and lifetime heat exchanger warranty. Prices vary by region: high cost areas like California and Northeast cost 15 to 20 percent more than South and Midwest. Additional costs include new thermostat at 200 to 500 dollars for iComfort S30, ductwork modifications at 300 to 800 dollars, and permit at 100 to 300 dollars. Labor is 1,000 to 2,000 dollars of total. Compared to Goodman at 3,000 to 5,500 dollars, Lennox costs 20 to 40 percent more but offers higher efficiency and quieter operation.
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