Great experience
I really liked me representative, she was patient and very helpful. I don't remember her name :(
By Desiree L.
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Great
813 reviews
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Guardian Interlock provides ignition interlock systems (also known as "blow and go" or "car breathalzyer" for people who need or want them after a DUI/DWI arrest. We provide high quality services and devices to make the process of installing and using an interlock as easy as possible.
Guardian Interlock (guardianinterlock.com) has 813 customer reviews on The Fair Hearing, with an average rating of 4.0 out of 5.
Showing 541 reviews with 5 stars · Clear filters
I really liked me representative, she was patient and very helpful. I don't remember her name :(
By Desiree L.
Kimberly was knowledgeable, kind and courteous. An excellent ambassador for your company.
By Barbara
I shopped around for an interlock system for my car and Guardian by far was the most thorough without be too hard a sell. My representative was friendly and pointed out several things I may have overlooked, such as a deinstallation charge and the $20.00 coupon. I'm glad I chose Guardian.
By Karen
Kim was a helpful agent.
By JACOB
My experience with Heather over the phone was great. She was very professional and helpful. She answered all my questions and took great care to ensure my information was correct. I don't yet have the device in my vehicle but so far my experience with Guardian has been very good.
By Kelli
Stephanie was excellent help and very informative. She took the time to make sure I was informed about the choices I had. Thank you for leading me along the process and promptly getting my appointment scheduled.
By Jim
real good costumer service.
By Salavdor S.
Good customer support
By Thomas