RECOMMENDED IN RENT
RECOMMENDED IN BUY
RECOMMENDED IN SELL
RECOMMENDED IN IMPROVE
… Understanding of the life expectancy of various building systems enables … table serves as a valuable resource providing estimated lifespans for key systems such as the building envelope HVAC … … Years … Elevator machinery 30 Windows 30 Boilers 2540 Cooling tower 25 PTAC 15 Façade 40 Roof 50 Parapet …