hepa air duct Cleaning
Heating, ventilation, and air conditioning (HVAC) systems have been shown to act as a collection source for a variety of contaminants that have the potential to affect health, such as mold, fungi, bacteria, and very small particles of dust. The removal of such contaminants from the HVAC system and home should be considered as one component in an overall plan to improve indoor air quality.
The most effective way to clean air ducts and ventilation systems is to employ Source Removal methods of cleaning. This requires placing the system under negative pressure, through the use of a specialized, powerful vacuum. While the vacuum draws air through the system, devices are inserted into the ducts to dislodge any debris that might be stuck to interior surfaces. The debris can then travel down the ducts to the vacuum, which removes it from the system and the home.
A vacuum collection device alone will not get an HVAC system clean. The use of methods and tools designed to agitate debris adhered to the surfaces within the system, in conjunction with the use of the vacuum collection device(s), is required to clean HVAC systems. (For example: brushes, air whips, and “skipper balls.”)
How Do I Select An Air Duct Cleaning Contractor?
Questions Residential and Commercial Property Owners Should Ask:
- How long has the contractor been in the residential HVAC system cleaning business?
- Can the contractor provide you with evidence of the current Worker’s Compensation and General Liability Insurance coverage? (ask for certificate of insurance)
- Can the contractor provide you with references?
- Will the contractor conduct a thorough inspection of your system PRIOR to performing any work and alert you to any problems?
- Is the contractor giving you a guaranteed price before the inspection? This may expose you to extra costs. Finding damaged fiberglass insulation, cleaning or treating cooling coils may become add-on costs.
- Will the contractor be cleaning the complete system, including coils and fans?
hepa air duct cleaning
Residential and Selected Commercial Systems
Typical Steps
- Inspect and Assess Condition
- Check System for
Proper Operation - Remove and Clean Supply Registers and Return Grills
- Clean Unit, Unit Closet
and Return Plenum(s) - Clean Coils with EPA-Approved Cleaner
- Block Duct Openings
- Set Up Negative Air Machine With HEPA Filtration
- Clean Air Ducts – High-Speed Brushes and Air Pressure
- Clean Distribution Boxes and Plenums
- Visually Inspect Work Product
- Set New Filters
- Reset and Test System for
Proper Operation - Reset Registers and Grills
