Duct cleaning is a service that can be beneficial to your home if you're concerned about potential allergens and harmful pollutants. The National Institute for Occupational Safety and Health (NIOSH) recommends duct cleaning every three years for homes with multiple air-conditioning units and at least every six months for single-unit homes. You can also get more information about duct cleaning from online sources.
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There are a few things to keep in mind when choosing a duct cleaning contractor:
Type of Cleaning: In general, there are two types of a duct cleaning: mechanical and thermal. Mechanical cleaning uses a machine to suction onto the ducts and removes debris. Thermal cleaning uses heat to kill bacteria and other contaminants.
Duct Size: Ducts range in size from small vents on the roof to large systems that carry air throughout a house. Contractors usually use the largest ducts possible for their equipment.
Location: Ducts can be located in any part of the house. However, they're more likely to be found in areas where dirty air collects, such as the attic, crawlspace, and basement.
There are a few types of duct cleaning that contractors can choose from. The most common is called “static cleaning” which means the contractor uses compressed air to remove dirt, dust, and debris from the duct system. This type of cleaning is good for small systems or areas that don’t have a lot of contamination. Another type of duct cleaning is called “dynamic cleaning” which means the contractor uses a special machine to move around the ducts and loosen debris.