HELP PROTECT YOUR HOME
ADT Home Security in Denver, CO
ADT is America’s most trusted* security company, tested and proven throughout our 150-year history Denver homeowners know we can help them protect what matters most.

Compare ADT security packages
Compare ADT security packages
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ADT+ Mobile App & Control
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Intrusion Detection
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Trusted Neighbor
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Front Door Video
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Perimeter Video
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Motion Detection
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Fire & Carbon Monoxide Detection
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Water & Temperature Detection
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Remote Access
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Alarm Cellular Backup
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30-day Event History
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Theft Protection Guarantee¹
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Money Back Guarantee¹
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24-Hour Battery Backup
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- 1 Requires ADT Complete pro monitoring plan and compatible devices. See here for terms.
- 2 Terms and conditions apply, see here for terms.
- 3 Applies after ADT has made attempts to resolve a system related issue. Requires purchase and continual monthly payment of both QSP and professional monitoring at time of activation to be eligible. See here for terms.
Convenience and protection in the palm of your hand
Convenience and protection in the palm of your hand
The ADT+ app lets you access your ADT system, Nest cams and Nest thermostats, all in one place.*
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Happy Customers in the Denver Area

Gloria
Denver, CO
via ConsumerAffairs
Denver, CO
via ConsumerAffairs
Oct 29, 2017
"I’ve had ADT for a long time and everything's going fine. I’ve had a few interactions with customer service through the years and they've been great.
It’s been a great experience overall."

Richard
Denver, CO
via ConsumerAffairs
Denver, CO
via ConsumerAffairs
Oct. 7, 2017
"I have had very few problems with my alarm system over the last 10 years. Occasionally I need speak to someone and one phone call gets it done in just moments.
Very very responsive to customers' needs. I am very pleased."

Valerie
Denver, CO
via ConsumerAffairs
Denver, CO
via ConsumerAffairs
June 22, 2017
"We have been Pleased with ADT from the moment it was installed. We have had no problems with the equipment and the customer service has been excellent...
and when the alarm has gone off response has been quick and courteous."
ADT Denver Service Area
Our ADT Denver team offers professional home security installation and a variety of security and automation products and solutions.
Same-Day Installation
6-Month Money-Back Guarantee*
24/7 Live Phone Support
- ADT Security Services
- Denver, CO 80203
- United States
- (720) 262-5892
- Denver Office Hours
- M-F 8am - 4pm
- Sat/Sun Closed
- Questions? Call Us Today!
- M-F 7am - 9pm
- Saturday 8am - 6pm
- Sunday 9am - 6pm
- Wheat Ridge
- Commerce City
- Englewood
- Arvada
- Westminster
- Aurora
- Littleton
- Morrison
- Golden
- Eastlake
The ADT+ app gives you convenience and protection in the palm of your hand. You can access your ADT system, Nest cams and Nest thermostats, all in one place.*
More control, more choices, more peace. ADT has partnered with Google to give you more ways to help protected and stay connected to your home. Integrate Nest cams, Nest thermostats and Nest Hub for a more connected ADT system you can easily control, whether you’re at home or on the go.