ADT pricing is all over the place. I've had several billing errors with them, and there is no consistency in the services you receive. We have friends who have the same service at a much cheaper cost and more sensors than ours. It is difficult to make changes to your system, and things cannot be done easily through the internet or over the phone. For example, if you go on vacation and want an instant call to 911 in case of break in, you must call and arrange for a technician to come in to make the change in person. A waste of time and a nusance

I have never,ever received worst service from a service provider in my life. System malfunctioned 7 months ago. Technician came at that time and needed to come back because he had no parts. Never heard from them again. We called in November. Technician came without the part. We never heard from them again. We called and had to actually dispute this issue for 2 months with them because we were still being billed! Scheduled appt (finally) last Tuesday. Took afternoon off work.They called to say technicians truck broke down. Rescheduled for today. Again, took afternoon off work. They just called to say they don't have the mandrel they need so they have to reschedule. Clowns. Absolute clowns. And after almost 8 months we are still left with no security for our family.

The system itself was very effective and worked quite good. Price was competitive and the girl on the phone was very friendly until I decided to cancel the service. The technician showed up late to deinstall, girl on the phone just disappeared and never returned my calls. So I would rate 3 stars for the service.

I have been with ADT for 9 years. Excellent service. Follow up on all calls has been immediate. The only false alarms I have experienced were due to user error in the use of the motion detector. The first three years were under contract. The last three years I have been paying $16.95/month. Small price to pay for peace of mind. Set it and forget it as they say. In 9 years the only equipment I have had to replace is the backup battery, and that was after 9 years. My experience with monitoring has been that when the system goes off their is an immediate response by ADT. Excellent Customer Service. I will definitely be using ADT in my new home.

This company sucks. It is way overpriced. They came to my home and aggressively sold us an alarm system for $500 not including monitoring costs. After I signed the contract I heard a radio ad for Alarm Force who install the system free of charge and charge you less per month for monitoring costs......no brainer people....

In 2009 I had adt come and install there service in my home, my mother was very ill and I had to go out of town alot to help my Dad and I didn't like leaving my Daughter (even though she was 16) alone all the time. So I felt so much better when I had the alarm system installed.....then to my amazement I found out the system had never been activated....how many people do they do this to?????? Check your systems people. I would never ever deal with them again!!!!!

Last fall we upgraded our alarm system with a digital system which was the best thing we ever did. Now we can even set the alarm after we leave the house unlike the old system. We were very impressed with the installation team who were very professional and tidied up after their work was done....great job.

We called ADT for a security system consult when we moved into our home in 2003. We liked their suggestions and decided to have both a security system and smoke detectors installed. When they were originally installed our dog's barking would set off the alarm. I called and they sent someone over the next day. A minor adjustment solved the problem. I find their telephone support excellent. I have never had a problem having one of their employees walk me through changing settings. The smoke detector batteries had to be changed and again they sent someone over promptly. The alarm has gone off a few times ( usually because someone forgot the cancellation code) and they have called immediately. I feel secure in knowing that our system is being monitored 24/7.

ADT was the worst... recently moved to Toronto and was setting up my alarm. Basically, the CO2 sensor was broken (brand new). So okay, after stopping the fire fighters from breaking my door with an axe, I thought it was faulty equipment, fine. They were supposed to put the alarm on test mode so that it wouldnt alert the fire fighters until it was fixed. they scheduled a technician to visit... technician didn't bother to show. Guess what, test mode was off... I get a call at 3a saying fire fighters are going to break down my door... I rush over, JUST IN TIME! 2 seconds later and my door would have been done. So a technician finally comes... he didn't bring a ladder!!!!!!!!! so i had to wait again, sure enough, the alarm goes off a 3rd time. Then they finally come and fix it. The sales guy was great... but the follow through was SO horrible, I wanted to pull my hair out.

We purchased our alarm system from ADT. The system itself was installed for free when we signed a 3 year contract ($33/month). The installer was on time, professional and completed the install fairly quickly. Didn't do a great clean up job (saw dust on the floor where they had installed sensors) but other then that did a good job.