Intoxalock Ignition Interlock at Capital Car Audio

1929 Dover Rd

Epsom

NH 03234

9:00 AM - 5:00 PM 9:00 AM - 5:00 PM 9:00 AM - 5:00 PM 9:00 AM - 5:00 PM 9:00 AM - 5:00 PM 9:00 AM - 3:00 PMClosed Today

(603) 370-3423

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Our Intoxalock state specialist will call you shortly. Business hours are Monday – Friday from 5:00 am – 12 am, and on weekends from 8 am – 10 pm Central Time

Thank you for scheduling an appointment!

We appreciate the opportunity to assist with your ignition interlock request and look forward to speaking with you. If you need to reschedule prior to the scheduled time, please call us at

(888) 288-7338

Hours

Day of the Week	Hours
Mon	9:00 AM - 5:00 PM
Tue	9:00 AM - 5:00 PM
Wed	9:00 AM - 5:00 PM
Thu	9:00 AM - 5:00 PM
Fri	9:00 AM - 5:00 PM
Sat	9:00 AM - 3:00 PM
Sun	Closed

Online Service Hours- 24 hours a day

Located in Capital Car Audio

Lobby
Waiting Area
Parking

50K+ 5-Star Reviews

Top-rated ignition interlock device provider with over 50,000 five-star reviews.

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NH State Requirements

Interlock regulations differ by state. Our state specialists are experts and will help answer any questions you have.

See NH State Requirements

Simple to Use

Our ignition interlock devices have one-button activation and a simple blow-inhale-blow pattern for easy use.

How It Works

Flexible and Affordable Pricing

Take advantage of budget-friendly pricing, bi-monthly payments, and financial assistance in most states to meet your needs.

Understand IID Costs

Why Choose Intoxalock - Capital Car Audio

About Intoxalock at Capital Car Audio
Capital Car Audio located in Epsom, NH is an authorized Intoxalock installer dedicated to providing simple, reliable and affordable ignition interlock services. Intoxalock is the #1 ignition interlock brand in the country, thanks to our easy-to-use IIDs. We are a state-approved interlock/car breathalyzer provider, and our state specialists provide 24/7 support and help guide you through the installation, calibration, and removal of your IID.

Our qualified service center technicians at Capital Car Audio will install your ignition interlock device and show you how it works. You’ll return to your Intoxalock location regularly for calibration, so we’ve made it easy to find one near you. With 5,000+ locations, Intoxalock has more service centers within 10 minutes of customers than any other provider. Visit us at Capital Car Audio and get back on the road fast!

Driving Directions
Capital Car Audio is located on Dover Rd. You can Head south

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Top-Rated Ignition Interlock Provider

Frequently Asked Questions

How does an interlock device work?

An ignition interlock device (IID) is a small breathalyzer installed in your vehicle to prevent it from starting if alcohol is detected on your breath. Before driving, you'll blow into the device. If your breath alcohol concentration (BrAC) is below the programmed limit, the car starts. Periodic retests occur during your trip to ensure continued compliance. To read more on Intoxalock, you can read our ignition interlock device guide.

What is the cost of an ignition interlock device?

The installation of an ignition interlock device, often called a car breathalyzer, typically costs between $70 and $150. This one-time fee is paid at the start of your lease and covers the service center's labor to install the device in your vehicle. Payment is made directly to the service center at the time of installation. For more on cost breakdowns, you can read our cost of ignition interlock device guide.

How do I use my interlock device?

Using an IID is simple. To start your vehicle, blow into the device as directed. If the device detects no alcohol, your car will start. You may be prompted for "rolling retests" while driving, where you’ll blow into the device again to confirm compliance. How-to videos are also available on the Intoxalock mobile app.

Where do I get an ignition interlock device?

Ignition interlock devices can be installed at certified service centers nationwide. Intoxalock offers a convenient network of locations and helps you schedule an installation appointment near you. Visit our Intoxalock locations page or call us to find the nearest service center and begin the installation process.

How long will my installation take?

Installing an ignition interlock device typically takes 1-2 hours, depending on your vehicle type. Certified technicians ensure the device is properly installed and provide you with training on how to use it. Contact Intoxalock for an appointment and an accurate time estimate for your installation.

What happens if I fail a breath test on my ignition interlock device?

If you fail a breath test, your vehicle will not start, and the device will log the event. Depending on your state’s regulations, multiple failed tests may trigger additional penalties, such as lockouts or reporting to your monitoring authority. Intoxalock devices allow you to retest after a short wait if alcohol is no longer detected. Always follow your state’s guidelines to remain compliant.

Can I install an ignition interlock device in a vehicle I don’t own?

Yes, in most cases, you can install an ignition interlock device in a vehicle you regularly drive, even if you’re not the registered owner. However, the vehicle owner must provide consent for the installation. Intoxalock works with you and the owner to ensure compliance with state regulations and the successful setup of the device.