A variety of tools and technologies are used to perform residential building energy audits and commercial building energy audits . This device includes a fan mounted on an insert that fits inside a doorway, allowing negative pressure to be generated inside a building to measure air leakage . Infrared Imaging Infrared photographs create a visual indication of heat leaks from a building. Most heating and cooling ducts leak energy.
Technologies are available for testing ducts for leaks.
Issues Financing Financing the costs of energy audits and any improvements can be difficult for many homeowners. For low-income families, weatherization programs provide both audits and improvements. In addition, utility rebates and state incentives are often available for homeowners.