888-240-5631

This is a SCAMMER trying to sell air duct cleaning, but doesn't actually do the work.  Unlicensed, uninsured, and without a permit in Los Angeles County to conduct business.  BBB rates them an F in their previous location in Canoga Park. Many people have written on Yelp and with the Better Business Bureau BBB to complain.  Current location is listed as a PARKING LOT in downtown LA.  That's right, a parking lot that has always been a parking lot.
Scammer has been using various unregistered company names, including Quality Air Duct, Inc.

HERE IS POLICE ARTICLE describing company operating this scam:
Arrest Made in Van Nuys Area of Contractor Impersonator Targeting the Elderly
http://www.lapdonline.org/van_nuys_news/news_view/56203
Link to more information and related phone numbers currently in use by this scammer:
https://800notes.com/Phone.aspx/1-800-737-4301

PLEASE heed these warnings.  These scammers target seniors, maybe even your mom, dad, or grandparent.  2 of these crooks are in jail for stealing more than $500,000 over the past 2 years.  Each of them (Eldad Syton, Yair Zilberman) are facing up to 36 years in jail.  Google these felons to see for yourself.
Latest advertisement for 888-240-5631 is in the Local Flavor/Clipper Magazine Guide, August-September 2015 issue.
Still not sure? Call them and ask for a real, physical business address.  Ask for the real name of the owners. It's a guarantee that they won't provide that information and try to get their foot in your door.
Read the link above to see how they scare and intimidate their way to YOUR money, without doing any of the promised work.

Advertisement in "Local Flavor" monthly circular, November 2015 edition, page RS18 (yes, "RS18") includes BBB Accredited Business logo. No company name, address, or contractor number in advertisement.  No listing with California Secretary of State.  People known to associate with this and related phone numbers are part of a larger criminal enterprise and are now in jail.  Google "Eldad Syton" and "Yair Zilberman" to learn more.  In the meantime, for the sake of gullible consumers, the BBB logo must be removed from this advertisement.  Publisher phone number is 855-430-5900.  Local Flavor edition printed on back cover near mailing address is "00129.08.15 San Fernando Valley-S, CA T3H".