Some of the most durable furnaces available are the Trane XR95, the Lennox Merit and the Carrier Infinity ICS. Each of these furnaces has been highly rated by consumers for its durability and reliability and comes recommended by HVAC professionals.
The Trane XC95 is a high-quality, high-efficiency gas furnace that features a variable speed fan and dehumidifier and runs exceptionally quietly. The Lennox Merit runs in the mid-range for price and quality and is designed to be long-lasting and efficient with a sealed compartment blower to reduce heat loss. The Carrier Infinity ICS is one of the best furnaces for its cost and comes highly rated for its durability as well as its quietness and high-energy efficiency.