For Certified Testers
List, claim, or promote your Certified Tester business
CTC Connection is a free directory built from CARB’s public Certified Tester list. If you operate a Certified Tester business, you can claim your listing, fix incorrect information, or apply for a featured sponsorship.
Claim your listing
Verify your business and unlock a 'Claimed by owner' badge so customers know they're contacting the right shop.
Fix incorrect info
Phone changed? Closed? New services? Send us a correction and we'll update the directory.
Featured sponsorship
Stand out at the top of search results and state pages with a clearly labeled sponsored placement.