The state required test and balance inspection applies to all types of buildings with HVAC systems – This includes restaurants, homes and condos. Your test involves having state certified technicians using sensors to detect if the proper amount of air is both blowing and sucking from vents. The air quality is tested to ensure safety. The readings on the sensors are double checked within a percentage of whats on your building blueprint. ECHO is located only 10 minutes from your home on E McNabb. Over 55 yrs in test and balance Sea Ranch Lakes. Call anytime.