- 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.
- Make sure the company is a member in good standing of NADCA.
- See if the company has been in business long enough to have adequate experience.
- 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.
You can also use the Homeowner’s Guide to Air Duct Cleaning as part of the contractor selection process.
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 to pay for unneeded services with and/or without their permission. (If you have knowledge of a practicing “blow-and-go” air duct cleaner, contact your local Better Business Bureau to report the company, and your local, federal and state elected officials to demand legislation.)