7504 CHESTNUT HILL DR Mechanical Permit for replacement of 2 HVAC systems

Barr Heating & Cooling (licensed pro Jonathan P. Barr) is replacing the home's HVAC at 7504 Chestnut Hill Dr for owners Thomas R. and Norma Hanley. The work installs two geothermal systems — a 5‑ton variable unit serving four zones for about 4,550 sq ft (≈42,500 BTU gain / 54,300 BTU loss) and a 4‑ton single‑zone unit (≈38,000 gain / 44,000 loss) — includes new ductwork, places equipment in the basement, and has an estimated project cost of $10,000.