Guardian Interlock.Guardian Interlock: states, cost and reviews
Guardian Interlock has locations for installs in 31 states out of 50. Pick your state below to find yours.
This booking line isn't Guardian Interlock's; it belongs to us. We handle booking with Guardian Interlock, or with another installer if no center of theirs is near you.
Guardian Interlock at a glance
- States that have install locations
- States with locations: 31 of 50
- Advertised price nationwide
- Monthly: $50 to $120
- Installation
- Between $70 and $170.
- Trustpilot
- 3.7 of 5 828 reviews
Where the numbers come from: Guardian Interlock's locator and pricing, the company's reviews on Trustpilot, plus MADD for typical install costs elsewhere.
What reviewers say about Guardian Interlock
Trustpilot's summary of recent reviews often mentions staff who are patient and polite, and who keep the setup simple to follow. It has replied to 100% of the negative reviews posted there.
Guardian Interlock device, company and complaints
- Device
- AMS 2500.
- What it does
- It has a fuel-cell sensor, a handset that comes out of the car, a quicker warm-up when it's cold, and, at start, a display of the days until your next service.
- Company
- Guardian Interlock, LLC, a sister brand to LifeSafer and Monitech.
- BBB rating
- The BBB gives it an A+ without accreditation (its Cincinnati, Ohio listing).
Its BBB page lists complaints along with the company's replies. Sources: the device page from Guardian Interlock's site; LifeSafer's list of its brands.
Living with a Guardian Interlock device
- Your state sets the timing: calibration visits at 30 to 90 day intervals. What these visits cost
- Retests while you drive, plus what happens if a test fails: violations and failed tests
- How removal works and when the device can leave the car: the removal process
Extra fees and offers
- The monthly price runs $50 to $120, and the install is $70 to $170 (pricing)
- The install costs nothing, your first payment is $0, and no sign-up fee applies (source)
From booking to removal with Guardian Interlock
- Book the install: call 888-528-2919 or leave your number, and Guardian Interlock or another installer in your state sets a day.
- The install visit happens at a service center. Cost: $70 to $170. You drive off with the handset wired to your ignition.
- Every 30 to 90 days you return for calibration, on the schedule your state sets.
- Once your state clears you, the device comes off; here's how removal works.
How does Guardian Interlock compare with other providers?
All 9 companies, nationwide. Choose your state at the top to see only the ones that install there.
| Company | Installation | Listed price | 12-month total | States | Trustpilot |
|---|---|---|---|---|---|
| Guardian Interlock. | $70 to $170 | $50 to $120 a month | $670 to $1,610 | 31 | |
 Smart Start. | From $150 | From $59.99 a month | From $869.88 | 48 + DC | |
 Intoxalock. | Set by each service center | From $54.99 a month | $729.88 to $809.88 *Estimate with MADD's typical install | 48 | |
 LifeSafer. | $70 to $150 | $50 to $120 a month | $670 to $1,590 | 47 | |
 RoadGuard Interlock (Dräger). | Quoted by phone | Quoted by phone | Quoted by phone | 32 + DC | |
 Low Cost Interlock. | $100 to $250, plus $40 sign-up fee | From $78.76 a month | $1,085.12 to $1,235.12Includes the $40 sign-up fee | 31 | |
 Alcohol Detection Systems (ADS). | Quoted by phone | Quoted by phone | Quoted by phone | 29 | |
 ALCOLOCK. | $70 to $150 | $60 to $90 a month | $790 to $1,230 | 24 | |
 Monitech. | $0, free install | Quoted by phone | Quoted by phone | 1North Carolina |
Add the listed lease for one year, the install price, plus any set-up fee, and you get the 12-month figure. When install isn't listed, MADD's typical range fills in (marked *). If there's no price at all, the cell notes that. Quoted by phone: on the call, the company gives its price. For a rough guide, MADD's overall estimate runs $60 to $80 a month plus $70 to $150 for install, or about $790 to $1,110 over 12 months ($720 to $960 with a free install).
States where Guardian Interlock installs
- Guardian Interlock installs in these states
- There's no install location
The map shades 31 of 50 states; tap one to see its rules and the other companies that install there.