Rooftop HVAC Systems

Everything is in one cabinet on the roof — compressor, coils, blower, and the controls — connected to the building only by ductwork and electrical. Access requires roof entry (ladder or interior stair) and often a safety plan. Replacement typically needs a crane and a curb adapter if the new unit's footprint differs from the old.

They're mechanical — motorized dampers, linkages, and controls — mounted outdoors on the roof where sun, heat, and weather accelerate wear. Many are also never serviced after install, so an economizer that's supposed to free-cool with outdoor air when conditions allow instead sits stuck closed, costing cooling energy. A functional check belongs on every maintenance visit.

The equipment lift happens on a scheduled crane day — often early morning or weekend to minimize disruption. Interior work (duct connection, electrical, controls) is planned around the crane window. The whole sequence is coordinated with the property manager and documented so building occupants know what to expect.

Fifteen to twenty years for standard commercial equipment, shorter in harsh exposure or if maintenance has been minimal. Age alone isn't the replacement trigger — a well-maintained twenty-year-old unit that's running efficiently can keep going, while a ten-year-old unit with chronic issues may be an obvious replace. We evaluate on condition, not just year.