All personel were very helpful, knowledgeable!!
As a 1st timer, the personel were all very helpful, and made it very easy for me to accept Guardian as my provider.. Thank You!!
By Richard D.
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.
813 approved reviews, newest moderated first
As a 1st timer, the personel were all very helpful, and made it very easy for me to accept Guardian as my provider.. Thank You!!
By Richard D.
I called them and assistant was really clear and got me set up in no time.
By Ivan
Felicia was amazing she made the process so not stressful she took her time and answered all of my question with out any problem she filled me in on the do's and don't and just sounds like she was just really trying to help not like a lot of other people I've spoken to thank you so much for the help
By Carlos
Cathryn was a delight to work with. I bugged her with many phone calls and she was always polite and has a caring attitude. She is a real people person. She is a "keeper".
By Mark
Explained with great detail what interlock was and how it works. Nelly was very helpful and provided quick and great customer service.
By Eva
Nelli treated me very good,she took care of everything for me
By Russell
experience with Guardian Interlock in speaking with Melissa was very helpful and straightforward
By Victor
Fantastic customer service with a professional that is well versed with the knowledge necessary to expedite a not so cheery transaction and make it stress free.
By James