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Need Ignition Interlock? Get started with our Program Advisors today!

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Schedule an Interlock Installation in Houston, TX

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& get back on the road

 

  • Texas’ #1 Ignition Interlock Program
  • Low-price, with no hidden fees
  • Fast installation with same-day availability
  • 24/7/365 Customer Care – Se habla Español

 

It only takes a moment to get your personalized quote.

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Ignition Interlock in Houston: We're Always Here for You

From $1.99/Day* - No Long-Term Contracts

From $1.99/Day* - No Long-Term Contracts

Bi-weekly payment options designed to fit your budget.

Ignition interlock Costs
3,000+ Locations - Same Day Install

3,000+ Locations - Same Day Install

Quick installs by skilled technicians at convenient U.S. locations.

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Discreet, Easy-to-Use Devices

Discreet, Easy-to-Use Devices

Reliable, hygienic devices with guided tests and easy English-Spanish switching.

Smart Start devices
24/7 Knowledgeable State Program Experts

24/7 Knowledgeable State Program Experts

Multilingual support trusted by over 1 million people, ready when you need us.

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Convenient Interlock Services Near You in the Houston Area

With service centers located throughout the Greater Houston area, finding a Smart Start location for installing and servicing your interlock is quick and easy.

Interlock Device

How Your Smart Start IID Helps You Stay Compliant in Houston

If you’re facing a DUI charge, your state alcohol monitoring authority might require you to install an Ignition Interlock Device (IID) on your vehicle. Also known as a “car breathalyzer” or “blow-and-go,” an IID prevents your vehicle from starting if the driver’s breath sample contains alcohol over a set limit. The alternative is often a suspended license and no ability to drive—so for many drivers, an IID is the clear choice for putting your DUI behind you.

Smart Start IIDs are designed to be discreet, reliable, and simple to use:

  • Low-profile design no bigger than your smartphone
  • Rigorously tested and calibrated to match your program requirements
  • User-friendly breath testing patterns make it easy to get going
(800) 831-3299

Meeting Interlock Device Requirements in Houston

If you have a DUI in Houston, you’ll need to follow the requirements from the Harris County courts and the Texas Department of Public Safety (DPS), including using an approved IID provider such as Smart Start. While every case is different, our team understands the local process to ensure you stay fully compliant, and our Program Advisors will be there for you from step one.

The Best Customer Care

When you choose the cheapest Ignition Interlock Device, you’re choosing the 24/7 bilingual support of our Customer Care Center and the expertise of our local technician teams. Call (800) 831-3299 or complete the form at the top of this page to enlist Smart Start as your program partner. We’ll put the wheel back in your hands.

(800) 831-3299

Questions about Ignition Interlock Devices in Houston, Texas

Calibration is required regularly to ensure your IID is working properly. In Houston, we offer convenient service appointments to calibrate your device. The frequency of calibration is defined by Texas regulations. Generally, every 30-90 days.

Yes! Smart Start offers same-day installation appointments at many of our Houston-area locations, subject to availability. We understand the urgency of meeting program deadlines, so we work to accommodate your schedule and get you back on the road as quickly as possible.

Smart Start offers several convenient installation locations throughout Houston and the surrounding areas. Our local service centers are staffed by experienced technicians who provide fast, professional installations. To find a location near you, visit our location finder or call our 24/7 Customer Care team for assistance.

Smart Start offers affordable Ignition Interlock solutions in Houston. See our Interlock Device cost guide for Texas to learn more.

An Ignition Interlock Device (IID) prevents a vehicle from starting if it detects alcohol on the driver’s breath. The driver blows into the device, and if their breath alcohol content is below the programmed limit, the car will start. You’ll also have to complete periodic retests after starting your vehicle to ensure continued compliance. Learn more about how IIDs work with our complete guide.

In Texas, an Ignition Interlock Device (IID) may be required after a DUI. See our complete guide for information on IID laws and more in Texas.

Smart Start ignition interlock device

See What Everyone Says About Our Ignition Interlock

Excellent TrustScore Rating
#1 Customer Rated 4.7 out of 5
February 3, 2026
"Simple Service informative"
Mark V.
United States
February 3, 2026
"It’s very nice to guide and support "
Jigish P.
United States
February 3, 2026
"Tasha knew what questions to ask. Very informative about what I will need to do next and move the process forward."
Munyun Hundun.
United States
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