Which brands of furnaces will be the best in 2026 based on reliability data, efficiency, and dealer surveys is Trane, Carrier, and Lennox for premium, and Goodman and Daikin for best value. Trane S9V2, XC95m, and Carrier Infinity 98 and Performance 96 are considered best premium furnaces with 96 to 99 percent AFUE efficiency, variable speed or modulating gas valves for ultimate comfort and temperature control within 0.5 degrees, very quiet operation at 60 to 65 decibels, and lowest service call rates around 8 to 10 percent according to HVAC surveys, costing 4,500 to 8,500 dollars installed, with lifetime heat exchanger warranties. Lennox SLP99V is most efficient at 99 percent AFUE and quietest with SilentComfort, costing 5,000 to 9,000 dollars, with service rates around 9 to 12 percent. Goodman GMVC96 and Daikin DM97MC are best value furnaces offering 96 to 97 percent AFUE, two-stage or modulating, with 10-year parts and lifetime heat exchanger warranties, and low cost at 3,000 to 5,500 dollars installed, with service rates around 10 to 13 percent but inexpensive parts. For best overall reliability and durability, Trane and Carrier rank highest. For absolute highest efficiency, Lennox SLP99V is best. For budget with good reliability, Goodman and Daikin are best value. All 2026 best furnaces offer variable speed blower and communicating technology.
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