Customer Service
Customer service was excellent and went beyond necessary to help me.
By Patricia
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Great
813 reviews
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Honesty, pricing, process and quality scores appear once 5 customers have rated them.
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.
813 approved reviews, newest moderated first
Customer service was excellent and went beyond necessary to help me.
By Patricia
very helpful and a pleasure to work with
By Martin
Heather was extremely helpful and very pleasant and easy to talk to.
By Callie
Very easy to set up my account with Guardian Interlock.
By Callie
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