# Ignition Interlock Installers in Houston, TX 21 ignition interlock installers in Houston, Texas. Court- and DMV-ordered ignition interlock (breathalyzer) installation and calibration. Compare up to 4 shops side by side, call them directly or get directions. Ordered by how complete and well-documented each listing is, not by quality or payment. ## Best-documented ignition interlock installers in Houston - **[Smart Start Ignition Interlock](https://appointauto.com/tx/houston/smart-start-ignition-interlock-15255-gulf-fwy/)** — 15255 Gulf Fwy Ste 134A, Houston, TX 77034 · [Call (409) 202-3055](tel:+14092023055) · [Website](https://www.smartstartinc.com/locations/ignition-interlock-texas-houston-15255-gulf-fwy-77034/?utm_source=Facebook&utm_campaign=3151&utm_medium=locations_organic) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Smart%20Start%20Ignition%20Interlock%2C%2015255%20Gulf%20Fwy%20Ste%20134A%2C%20Houston%2C%2077034) · [Details](https://appointauto.com/tx/houston/smart-start-ignition-interlock-15255-gulf-fwy/) - **[Smart Start Ignition Interlock](https://appointauto.com/tx/houston/smart-start-ignition-interlock/)** — 2323 Blodgett St, Houston, TX 77004 · [Call (281) 706-8415](tel:+12817068415) · [Website](https://www.smartstartinc.com/locations/ignition-interlock-texas-houston-2323-blodgett-st-77004/?utm_source=Facebook&utm_campaign=5&utm_medium=locations_organic) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Smart%20Start%20Ignition%20Interlock%2C%202323%20Blodgett%20St%2C%20Houston%2C%2077004) · [Details](https://appointauto.com/tx/houston/smart-start-ignition-interlock/) - **[Intoxalock Ignition Interlock](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-6805-sw-freeway/)** — 6805 SW Freeway, Houston, TX 77074 · [Call (713) 496-2960](tel:+17134962960) · [Website](https://www.intoxalock.com/locations/tx/houston/6805-southwest-freeway-12551?utm_medium=yext&utm_source=bing&y_source=1_MTAyMDM4MzEwOS00ODMtbG9jYXRpb24ud2Vic2l0ZQ%3D%3D) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Intoxalock%20Ignition%20Interlock%2C%206805%20SW%20Freeway%2C%20Houston%2C%2077074) · [Details](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-6805-sw-freeway/) - **[Intoxalock Ignition Interlock](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-6701-harwin-dr/)** — 6701 Harwin Dr, #220, Houston, TX 77036 · [Call (713) 331-7630](tel:+17133317630) · [Website](https://www.intoxalock.com/locations/tx/houston/6701-harwin-dr-10505?utm_medium=yext&utm_source=bing&y_source=1_MzA5ODAxNjgtNDgzLWxvY2F0aW9uLndlYnNpdGU%3D) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Intoxalock%20Ignition%20Interlock%2C%206701%20Harwin%20Dr%2C%20%23220%2C%20Houston%2C%2077036) · [Details](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-6701-harwin-dr/) - **[Intoxalock Ignition Interlock](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-12950-fuqua-st/)** — 12950 Fuqua St, Houston, TX 77034 · [Call (832) 234-1037](tel:+18322341037) · [Website](https://www.intoxalock.com/locations/tx/houston/12950-fuqua-st-12446?utm_medium=yext&utm_source=bing&y_source=1_MTAxNzkzNjc3NC00ODMtbG9jYXRpb24ud2Vic2l0ZQ%3D%3D) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Intoxalock%20Ignition%20Interlock%2C%2012950%20Fuqua%20St%2C%20Houston%2C%2077034) · [Details](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-12950-fuqua-st/) - **[Intoxalock Ignition Interlock](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-6638-ledbetter-st/)** — 6638 Ledbetter St, Houston, TX 77087 · [Call (832) 234-1038](tel:+18322341038) · [Website](https://www.intoxalock.com/locations/tx/houston/6638-ledbetter-st-12337?utm_medium=yext&utm_source=bing&y_source=1_MTAxMjU1ODQwNS00ODMtbG9jYXRpb24ud2Vic2l0ZQ%3D%3D) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Intoxalock%20Ignition%20Interlock%2C%206638%20Ledbetter%20St%2C%20Houston%2C%2077087) · [Details](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-6638-ledbetter-st/) - **[Intoxalock Ignition Interlock](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-159-tidwell-rd/)** — 159 Tidwell Rd, Houston, TX 77022 · [Call (832) 239-8060](tel:+18322398060) · [Website](https://www.intoxalock.com/locations/tx/houston/159-tidwell-rd-10279?utm_medium=yext&utm_source=facebook&y_source=1_MjgxNjQxODctNTU5LWxvY2F0aW9uLndlYnNpdGU%3D) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Intoxalock%20Ignition%20Interlock%2C%20159%20Tidwell%20Rd%2C%20Houston%2C%2077022) · [Details](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-159-tidwell-rd/) - **[Intoxalock Ignition Interlock](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-9239-n-houston/)** — 9239 N Houston Rosslyn Rd, Houston, TX 77088 · [Call (713) 533-8484](tel:+17135338484) · [Website](https://www.intoxalock.com/locations/tx/houston/9239-n-houston-rosslyn-rd-9805?utm_medium=yext&utm_source=facebook&y_source=1_MjQyNTU3NTctNTU5LWxvY2F0aW9uLndlYnNpdGU%3D) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Intoxalock%20Ignition%20Interlock%2C%209239%20N%20Houston%20Rosslyn%20Rd%2C%20Houston%2C%2077088) · [Details](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-9239-n-houston/) - **[LifeSafer Ignition Interlock](https://appointauto.com/tx/houston/lifesafer-ignition-interlock/)** — 7215 N Shepherd Dr, Houston, TX 77091 · [Call (281) 688-2817](tel:+12816882817) · [Website](https://enrollment.lifesafer.com/intro/CORPGBPTX) · [Directions](https://www.google.com/maps/dir/?api=1&destination=LifeSafer%20Ignition%20Interlock%2C%207215%20N%20Shepherd%20Dr%2C%20Houston%2C%2077091) · [Details](https://appointauto.com/tx/houston/lifesafer-ignition-interlock/) - **[Smart Start Ignition Interlock](https://appointauto.com/tx/houston/smart-start-ignition-interlock-6638-ledbetter-st/)** — 6638 Ledbetter St, Houston, TX 77087 · [Call (833) 408-3125](tel:+18334083125) · [Website](https://www.smartstartinc.com/locations/ignition-interlock-texas-houston-6638-ledbetter-st-77087/?utm_source=Facebook&utm_campaign=8136&utm_medium=locations_organic) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Smart%20Start%20Ignition%20Interlock%2C%206638%20Ledbetter%20St%2C%20Houston%2C%2077087) · [Details](https://appointauto.com/tx/houston/smart-start-ignition-interlock-6638-ledbetter-st/) - **[Alcohol Detection Systems Ignition Interlock](https://appointauto.com/tx/houston/alcohol-detection-systems-ignition-interlock/)** — 12288 Beechnut St, Houston, TX 77072 · [Call (888) 786-7384](tel:+18887867384) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Alcohol%20Detection%20Systems%20Ignition%20Interlock%2C%2012288%20Beechnut%20St%2C%20Houston%2C%2077072) · [Details](https://appointauto.com/tx/houston/alcohol-detection-systems-ignition-interlock/) - **[Alcohol Detection Systems Ignition Interlock](https://appointauto.com/tx/houston/alcohol-detection-systems-ignition-interlock-14515-walters-rd/)** — 14515 Walters Rd, Houston, TX 77014 · [Call (888) 786-7384](tel:+18887867384) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Alcohol%20Detection%20Systems%20Ignition%20Interlock%2C%2014515%20Walters%20Rd%2C%20Houston%2C%2077014) · [Details](https://appointauto.com/tx/houston/alcohol-detection-systems-ignition-interlock-14515-walters-rd/) - **[Alcohol Detection Systems Ignition Interlock](https://appointauto.com/tx/houston/alcohol-detection-systems-ignition-interlock-9410-galveston-rd/)** — 9410 Galveston Rd, Houston, TX 77034 · [Call (888) 786-7384](tel:+18887867384) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Alcohol%20Detection%20Systems%20Ignition%20Interlock%2C%209410%20Galveston%20Rd%2C%20Houston%2C%2077034) · [Details](https://appointauto.com/tx/houston/alcohol-detection-systems-ignition-interlock-9410-galveston-rd/) - **[Intoxalock Ignition Interlock](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-940-s-texas/)** — 940 S Texas 6, Houston, TX 77079 · [Call (832) 426-3009](tel:+18324263009) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Intoxalock%20Ignition%20Interlock%2C%20940%20S%20Texas%206%2C%20Houston%2C%2077079) · [Details](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-940-s-texas/) - **[Intoxalock Ignition Interlock](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-16920-kuykendhal-rd/)** — 16920 KUYKENDHAL Rd Ste 231, Houston, TX 77068 · [Call (832) 234-1045](tel:+18322341045) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Intoxalock%20Ignition%20Interlock%2C%2016920%20KUYKENDHAL%20Rd%20Ste%20231%2C%20Houston%2C%2077068) · [Details](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-16920-kuykendhal-rd/) - **[Intoxalock Ignition Interlock](https://appointauto.com/tx/houston/intoxalock-ignition-interlock/)** — 13530 Mc Grath Rd Bldg H Building H, Houston, TX 77047 · [Call (713) 933-3601](tel:+17139333601) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Intoxalock%20Ignition%20Interlock%2C%2013530%20Mc%20Grath%20Rd%20Bldg%20H%20Building%20H%2C%20Houston%2C%2077047) · [Details](https://appointauto.com/tx/houston/intoxalock-ignition-interlock/) - **[Low Cost Interlock](https://appointauto.com/tx/houston/low-cost-interlock/)** — 2018 Wirt Rd, Houston, TX 77055 · [Call (210) 248-0832](tel:+12102480832) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Low%20Cost%20Interlock%2C%202018%20Wirt%20Rd%2C%20Houston%2C%2077055) · [Details](https://appointauto.com/tx/houston/low-cost-interlock/) - **[RoadGuard Ignition Interlock](https://appointauto.com/tx/houston/roadguard-ignition-interlock/)** — 11000 Gulf Fwy, Houston, TX 77034 · [Call (800) 332-6858](tel:+18003326858) · [Directions](https://www.google.com/maps/dir/?api=1&destination=RoadGuard%20Ignition%20Interlock%2C%2011000%20Gulf%20Fwy%2C%20Houston%2C%2077034) · [Details](https://appointauto.com/tx/houston/roadguard-ignition-interlock/) - **[Alcohol Detection Systems Ignition Interlock](https://appointauto.com/tx/houston/alcohol-detection-systems-ignition-interlock-13141-bissonnet-st/)** — 13141 Bissonnet St, B 106, Houston, TX 77099 · [Call (888) 786-7384](tel:+18887867384) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Alcohol%20Detection%20Systems%20Ignition%20Interlock%2C%2013141%20Bissonnet%20St%2C%20B%20106%2C%20Houston%2C%2077099) · [Details](https://appointauto.com/tx/houston/alcohol-detection-systems-ignition-interlock-13141-bissonnet-st/) - **[Alcohol Detection Systems Ignition Interlock](https://appointauto.com/tx/houston/alcohol-detection-systems-ignition-interlock-5602-n-shepherd/)** — 5602 N Shepherd Dr, #B, Houston, TX 77091 · [Call (888) 786-7384](tel:+18887867384) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Alcohol%20Detection%20Systems%20Ignition%20Interlock%2C%205602%20N%20Shepherd%20Dr%2C%20%23B%2C%20Houston%2C%2077091) · [Details](https://appointauto.com/tx/houston/alcohol-detection-systems-ignition-interlock-5602-n-shepherd/) - **[Alcohol Detection Systems Ignition Interlock](https://appointauto.com/tx/houston/alcohol-detection-systems-ignition-interlock-20-e-crosstimbers/)** — 20 E Crosstimbers St, #A, Houston, TX 77022 · [Call (888) 786-7384](tel:+18887867384) · [Directions](https://www.google.com/maps/dir/?api=1&destination=Alcohol%20Detection%20Systems%20Ignition%20Interlock%2C%2020%20E%20Crosstimbers%20St%2C%20%23A%2C%20Houston%2C%2077022) · [Details](https://appointauto.com/tx/houston/alcohol-detection-systems-ignition-interlock-20-e-crosstimbers/) ## Ignition Interlock Installers in Houston at a glance - **Website**: 10 of 21 list a working website - **Hours online**: Opening hours were read from 9 shop websites: 7 open Saturday ([Intoxalock Ignition Interlock](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-6805-sw-freeway/), [Smart Start Ignition Interlock](https://appointauto.com/tx/houston/smart-start-ignition-interlock-6638-ledbetter-st/)), 2 open Sunday ([Intoxalock Ignition Interlock](https://appointauto.com/tx/houston/intoxalock-ignition-interlock-9239-n-houston/), [Smart Start Ignition Interlock](https://appointauto.com/tx/houston/smart-start-ignition-interlock-6638-ledbetter-st/)) - **Most listings by ZIP**: 77034 (4), 77022 (2), 77087 (2), 77091 (2), 77004 (1), 77014 (1) Counts from the directory build (Overture Maps); opening hours read from the shops’ own websites, each shop page links its source. Nothing here is estimated. ## Tips before you go - Use a provider your state or court approves; the order or DMV letter names the requirement. - Ask about the install fee, the monthly lease and how often the device must be calibrated. ## Frequently asked questions ### Which ignition interlock installers in Houston are open on Saturday? Of the 9 ignition interlock installers in Houston whose websites list hours, 7 are open on Saturday and 2 on Sunday, including Intoxalock Ignition Interlock, Smart Start Ignition Interlock. Hours change, so call before you go; shops without hours online may open on weekends too. ### How many ignition interlock installers are in Houston? AppointAuto lists 21 ignition interlock installers in Houston, TX. ### How are shops ordered? Shops with an active state license and complete contact details (phone, website, matching address in several sources) are listed first. A page the owner has verified moves up further when it has hours, prices and photos. The order never reflects payment, and no shop is marked down. ## Ignition Interlock Installers near Houston - [Ignition Interlock in Stafford](https://appointauto.com/tx/stafford/ignition-interlock/) — 14 mi, 1 listed - [Ignition Interlock in Humble](https://appointauto.com/tx/humble/ignition-interlock/) — 17 mi, 1 listed - [Ignition Interlock in Cypress](https://appointauto.com/tx/cypress/ignition-interlock/) — 17 mi, 1 listed - [Ignition Interlock in Fresno](https://appointauto.com/tx/fresno/ignition-interlock/) — 19 mi, 1 listed - [Ignition Interlock in Spring](https://appointauto.com/tx/spring/ignition-interlock/) — 19 mi, 2 listed - [Ignition Interlock in Katy](https://appointauto.com/tx/katy/ignition-interlock/) — 20 mi, 3 listed - [Ignition Interlock in Manvel](https://appointauto.com/tx/manvel/ignition-interlock/) — 21 mi, 2 listed - [Ignition Interlock in Tomball](https://appointauto.com/tx/tomball/ignition-interlock/) — 24 mi, 1 listed ## Other services in Houston - [💨 Emissions & Inspection](https://appointauto.com/tx/houston/smog-check/): 25 listed - [🛞 Tire Shops](https://appointauto.com/tx/houston/tire-shops/): 988 listed - [🔧 Auto Repair](https://appointauto.com/tx/houston/auto-repair/): 3,075 listed - [🛢️ Oil Change](https://appointauto.com/tx/houston/oil-change/): 173 listed - [🚗 Auto Body](https://appointauto.com/tx/houston/auto-body/): 790 listed - [🧽 Car Wash](https://appointauto.com/tx/houston/car-wash/): 443 listed - [✨ Auto Detailing](https://appointauto.com/tx/houston/auto-detailing/): 280 listed - [🎨 Window Tint & Wraps](https://appointauto.com/tx/houston/tint-and-wraps/): 261 listed - [🔊 Car Audio & Electronics](https://appointauto.com/tx/houston/car-audio/): 96 listed - [🪟 Auto Glass](https://appointauto.com/tx/houston/auto-glass/): 239 listed - [🚛 Towing](https://appointauto.com/tx/houston/towing/): 195 listed - [⚙️ Auto Parts](https://appointauto.com/tx/houston/auto-parts/): 752 listed - [🚙 Car Dealers](https://appointauto.com/tx/houston/car-dealers/): 2,174 listed - [🚚 Truck & Diesel](https://appointauto.com/tx/houston/truck-repair/): 437 listed - [🏍️ Motorcycle Shops](https://appointauto.com/tx/houston/motorcycle-shops/): 130 listed - [🚐 RV & Marine](https://appointauto.com/tx/houston/rv-and-marine/): 96 listed - [♻️ Junkyards & Car Buyers](https://appointauto.com/tx/houston/junkyards/): 89 listed - [🪪 DMV & Registration](https://appointauto.com/tx/houston/dmv-registration/): 41 listed - [🚦 Driving Schools](https://appointauto.com/tx/houston/driving-schools/): 129 listed 🚗 Your garage is here Add your car once: plate, tire size and registration date stay in one place, ready for your next smog check or new tires. Add your car — free --- Source: https://appointauto.com/tx/houston/ignition-interlock/ · Ignition Interlock Installers in Houston, TX: 21 Listed | AppointAuto Listings combine Overture Maps data with state license records where available. Details can change; call the shop to confirm.