Home Alarm Systems Customer Service
For New ADT Home Alarm Systems
Learn more about how ADT can protect your home and family
Contact a security advisor at 1-888-841-3927.
Sales Center Hours:
English Speaking Agents:
Mon - Fri 7am - 1am EST, Sat 9am - 12am EST & Sun 10am - 10pm EST.
Spanish Speaking Agents:
Mon - Fri 12pm - 9pm EST.
Current ADT Customers
For assistance with an existing ADT home alarm system contact ADT at 1-866-746-7238.
If you have a question about your installation appointment and you would like to speak to a Customer Relations Associate, please call 1-866-382-1697.
Customer Relations Hours:
Monday-Friday: 8:00am - 9:00pm EST
Saturday: 10:00am - 6:00pm EST
Call Us Today!
1-888-841-3927
...or fill out the form below and one of our Home Security Experts will call you!


