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ADT, your trusted Home Security Provider in Horsham, PA
(800) 489-9070ADT provides professional home security installation and 24/7 monitoring to homeowners across Horsham, Pennsylvania, and the surrounding Montgomery County area. The ADT Horsham team serves neighborhoods throughout this Philadelphia suburb, including Horsham Township, Hatboro, Warminster, Warrington, and Ambler. Located along the Route 611 and Route 63 corridors approximately 10 miles north of downtown Philadelphia, Horsham homeowners benefit from ADT’s professional monitoring in one of Montgomery County’s established residential communities. ADT operates six company-operated monitoring centers, all U.S.-based and not outsourced.
231-253, Gibraltar Rd
Horsham PA 19044
United States
(267) 439-4956
Nearby Cities
Mon-Fri: 8AM - 4PM
Sat-Sun: Closed
Monday - Friday 7am - 9pm
Saturday 8am - 6pm
Sunday 9am - 6pm
Happy Customers in the Horsham Area
Cheryl
Philadelphia, PA
“I've been an ADT customer for many years and have recommended ADT to my daughter so she could also share my experience. I rely on ADT's reliable services to answer all my questions. Thank you ADT, my constant companion for all the years!”
Craig
Philadelphia, PA
“I couldn't be happier with the service but especially the tech that installed the unit. My 86 year old mother lives with me and he took the time it needed to explain the entire process to her several times. Thank you!”
Marvena
Philadelphia, PA
“The Agent was very cordial and polite. She was able to answer my questions. She was able to input my new information and rectify my account. She was patient and friendly. She asked if there was anything else she could assist me with. I appreciate great customer service. Thank you.”

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Horsham, PA Service Area & Local Process
The ADT Horsham branch provides professional installation of the ADT Smart Home System throughout Montgomery County, including Lansdale, North Wales, Doylestown, Willow Grove, and Fort Washington, with coverage across the Greater Philadelphia area, including Bucks, Montgomery, Philadelphia, Delaware, and Chester counties. Installation times depend on the home, system configuration, equipment selected, and installation conditions.
The greater Philadelphia region experiences severe thunderstorms in spring and summer, along with nor’easters and heavy snow in winter. Water and temperature sensors are a practical addition for Montgomery County homes, where seasonal rain, winter freeze risk, and aging infrastructure in established neighborhoods create environmental monitoring needs. The ADT Smart Home System includes backup battery power to help keep the system powered during a power outage. If internet service is disrupted, cellular backup may help keep the system connected to ADT monitoring, as long as you have an active ADT monitoring plan and cellular service is available.
Horsham, PA Local Regulations & Requirements
Contact Horsham Township Police Department or your local municipality’s police department to verify current alarm permit and registration requirements. Pennsylvania municipalities set their own alarm ordinances, and requirements vary across Montgomery County and Bucks County. Your ADT professional installation technician can provide guidance during your consultation.
Homeowners in apartments, condominiums, and townhomes in the Horsham area should verify installation permissions with their property management or HOA before scheduling professional installation.
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You have questions, we've got you covered
Do I need an alarm permit in Horsham, Pennsylvania?
Contact Horsham Township Police Department to verify current alarm permit requirements. Pennsylvania municipalities set their own alarm ordinances, and requirements vary across Montgomery County. Your ADT professional installation technician can provide guidance during your consultation.
Does ADT install in Horsham apartments and condos?
ADT offers professional installation for apartments, condos, and townhomes in the Horsham area, including properties near Willow Grove, along Route 611, and in Montgomery County’s established residential communities. Before scheduling, verify with your property management or HOA that security system installation is permitted.
What areas near Horsham does ADT serve?
The ADT Horsham branch serves homeowners throughout Montgomery County and Bucks County, including Lansdale, North Wales, Doylestown, Warminster, Warrington, Ambler, Willow Grove, and Fort Washington. Coverage extends across the Greater Philadelphia area, Montgomery, Philadelphia, Delaware, and Chester counties.
How long does ADT installation take in Horsham?
Installation times depend on the home, system configuration, equipment selected, and installation conditions. The installation may include setup of the ADT Base, sensors, cameras, and full system configuration through the ADT+ app. Your technician will walk through system operation and answer questions before leaving.
Does ADT offer monitoring during winter storms in the Philadelphia suburbs?
ADT’s 24/7 professional monitoring provides continuous coverage during nor’easters, heavy snow, and ice storms common in the greater Philadelphia area. Water and temperature sensors can provide early notifications for pipe freezes and basement flooding. The ADT Smart Home System includes backup battery power to help keep the system powered during a power outage. If internet service is disrupted, cellular backup may help keep the system connected to ADT monitoring, as long as you have an active ADT monitoring plan and cellular service is available.
Can I add cameras or smart home devices after installation?
ADT customers in Horsham can add cameras, smart locks, smart lighting, and additional sensors to their ADT Smart Home System at any time.
Do I need an alarm permit in Horsham?
Contact Horsham Township Police Department at 215-643-8284 for current alarm permit requirements. Pennsylvania municipalities set their own ordinances.
What areas near Horsham does ADT serve?
ADT serves Montgomery and Bucks counties including Lansdale, North Wales, Doylestown, Warminster, Warrington, Ambler, and Fort Washington, with broader Greater Philadelphia coverage across Montgomery, Philadelphia, Delaware, and Chester counties.
How long does ADT installation take?
Installation times depend on the home, system configuration, equipment selected, and installation conditions. The installation may include setup of the ADT Base, sensors, cameras, and full system configuration through the ADT+ app. Your technician will walk through system operation and answer questions before leaving.