Furnaces

What a furnace costs installed, how staging and AFUE change the bill, and when a furnace still beats a heat pump.

High-efficiency condensing gas furnace installed in a basement mechanical room

Cost guide Furnaces

What a new gas furnace actually costs to install in 2026

National installed quotes run from $4,200 for a single-stage 80% unit to $11,800 for a modulating 97% condensing furnace. Almost none of that spread is the furnace itself.

August 14, 2026