FAQ

Frequently Asked Questions

Why should I choose a NADCA member to have my air ducts cleaned?
What criteria should I use in selecting an HVAC system cleaner?
What is the normal price range for the air duct cleaning service?
How often should residential HVAC systems be cleaned?
How should a residential HVAC system be cleaned?
Will an HVAC system cleaning reduce our home energy bills?
Are there any health benefits that come from HVAC system cleaning?

Why should I choose a NADCA member to have my air ducts cleaned?

"Air duct cleaning companies must meet stringent requirements to become a NADCA Member. Among those requirements, all NADCA Members must havecertified Air System Cleaning Specialists (ASCS) on staff, who have taken and passed the NADCA Certification Examination. Passing the exam demonstrates extensive knowledge in HVAC design and cleaning methodologies. ASCS's are also required to further their industry education by attending seminars in order to maintain their NADCA certification status" ~  NADCA - The HVAC Inspection Maintenance and Restoration Association

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What criteria should I use in selecting an HVAC system cleaner?

According to NADCA - The HVAC Inspection Maintenance and Restoration Association...

•	Make sure the company is a member in good standing of the National Air Duct Cleaners Association (NADCA).
•	See if the company has been in business long enough to have adequate experience.
•	Inquire whether the company is in good standing with your local Better Business Bureau.
•	Get proof that the company is properly licensed and adequately insured.
•	Verify that the company is certified by NADCA to perform HVAC system cleaning.
•	Make sure that the company is going to clean and visually inspect all of the air ducts and related system components.
•	Avoid advertisements for "$99 whole house specials" and other sales gimmicks.
•	Ask if the company has the right equipment to effectively perform cleaning, and if the company has done work in homes similar to yours. Get references from neighbors if possible.

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What is the normal price range for the air duct cleaning service?

"The Environmental Protection Agency says that “duct cleaning services typically – but not always – range in cost from $450 to $1000 per heating and coolingsystem, depending on the services offered, the size of the system to be cleaned, system accessibility, climactic region, and level of contamination” and type of duct material.

Consumers should beware of air duct cleaning companies that making sweeping claims about the health benefits of duct cleaning – such claims are unsubstantiated. Consumers should also beware of “blow-and-go” air duct cleaning companies. These companies often charge a nominal fee and do a poor job of cleaning the heating and cooling system. These companies may also persuade the consumer into unneeded services with and/or without their permission." ~ NADCA - The HVAC Inspection Maintenance and Restoration Association

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How often should residential HVAC systems be cleaned?

"Frequency of cleaning depends on several factors, not the least of which is the preference of the home owner. Some of the things that may lead a home owner to consider more frequent cleaning include:

•	Smokers in the household.
•	Pets that shed high amounts of hair and dander.
•	Water contamination or damage to the home or HVAC system.
•	Residents with allergies or asthma who might benefit from a reduction in the amount of indoor air pollutants in the home’s HVAC system.
•	After home renovations or remodeling.
•	Prior to occupancy of a new home."

~ NADCA - The HVAC Inspection Maintenance and Restoration Association

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How should a residential HVAC system be cleaned?

"The most effective way to clean air ducts and ventilation systems is to employ Source Removal methods of cleaning. This requires a contractor to place 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." ~ NADCA - The HVAC Inspection Maintenance and Restoration Association

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Will an HVAC system cleaning reduce our home energy bills?

Research by the U.S. EPA has demonstrated that HVAC system cleaning may allow systems to run more efficiently by removing debris from sensitive mechanical components. Clean, efficient systems are less likely to break down, have a longer life span, and generally operate more effectively than dirty systems. ~ NADCA - The HVAC Inspection Maintenance and Restoration Association

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Are there any health benefits that come from HVAC system 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." ~NADCA - The HVAC Inspection Maintenance and Restoration Association

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