Sizing a Furnace for Colorado Springs Elevation
Furnace capacity is published at sea level. At 6,035 feet, output drops roughly 4 percent per 1,000 feet, which means a nominal 80,000 BTU furnace delivers meaningfully less usable heat here. We perform a load calculation based on your square footage, insulation, window area and orientation, ceiling heights, infiltration, and duct layout, rather than matching the model number on the old unit. Oversizing is the most common mistake we correct: an oversized furnace blasts, satisfies the thermostat quickly, shuts down, and leaves cold rooms and noisy cycling behind.




