average age of hvac system
As warmer weather taxes aging air-conditioning systems, the decision whether to repair an older rooftop unit or replace it with a newer, higher efficiency system may loom large for some commercial property owners. Most light-commercial HVAC products are designed for a life expectancy of 15 to 20 years.igher energy bills â HVAC systems average 30 percent of a buildingâs energy consumption. Poor performance can increase energy consumption from 20 to 50 percent.