Energy auditors use blower door systems to quantify the total air leaks of a home. They use combustion-testing equipment to make sure your home’s heating system is operating safely and at peak efficiency. They typically also use infrared cameras to identify sources of air leaks and airflow monitors to test ventilation fan function and duct leaks. They assess insulation levels and all significant energy savings opportunities. Your auditor will produce a report that outlines the highest-yielding improvements, specifying cost and savings of each measure using energy modeling software. See photos of the equipment used.