Great service
Knowledgeable customer service
By Kelly
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
Knowledgeable customer service
By Kelly
Very helpful, very nice, painless
By Gary
Two of the girls (Tawanda and Danielle) went above and beyond to process my forms so quickly so that I could have my interlock install at a convenient time. They turned it around in less than a day!
By Robert G.
This was the best choice in a bad situation.
By Roman
If you have to have a interlock device installed in your vehicle, go with guardian! ! They are respectful, knowledgeable , and efficient at their job. The device isn't difficult to use either. They will give you instructions on how to use it by video & demonstration until you are able to use device efficiently.
By Laurie
Made things simple unlike most places
By Nicole
R technician was very knowledgeable
By Robert
Stephanie went above and beyond to work with me and to get a hold of me with my busy schedule.
By Britany