3920 Illinois Ave mechanical permit issued for HVAC furnace replacement

Prudential HVAC is replacing a gas furnace at 3920 Illinois Ave for owner Julia Catherine Rosenauer. The permit covers a single-system replacement (a 90% efficiency furnace) with the equipment in the basement and the condenser at ground level; it was issued on 12/11/2025 with $105 in fees paid and an estimated project cost listed as $1, so it looks like a routine furnace swap rather than a major renovation.