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TRUSTED BY THORNTON, CO HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon91
    Verified home security system services reviews

Find Home security system pros in Thornton

Avatar for ADT
ADT
4.5(
880
)
Surveillance Cameras - Install or RepairAlarm or Security System - InstallAlarm or Security System - Repair+5 more

Serving Thornton, CO and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1874

Free estimates

Emergency services offered

"ADT has exceeded my expectations! The system is reliable, the app is easy to use, and the customer service team is always helpful. I appreciate the environmental monitoring features, which go beyond just security. Knowing my home is protected 24/7 is priceless. I highly recommend ADT to anyone looking for a trustworthy security provider."
Home Security Essentials
Smart Home Security
Cameras
Our Team
Home Security Essentials

+35

54 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Modern Tech
Modern Tech
5.0(
13
)
Alarm or Security System - InstallAlarm or Security System - Install - For BusinessAlarm or Security System - Monitor - For Business+3 more

Serving Thornton, CO and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"For Security Systems, this is the place to go. Yes, I had ADP quote my project, but Modern Tech was by far the best option. Not only is it a local company, but the professionalize, value and price made it an easy decision, plus there was not a three year contract! Robert was the installer and he was fabulous at explaining options (personalized to what I needed) and how everything worked. He was also very responsive to the follow-up questions I had. I highly recommend using this company for your surveillance and alarm system needs."
Gated property
Exterior True Color Eyeball Camera
House of Dog
Wired camera Install
Active deterrent surveillance camera

+72

Response time2 days
Response rate100%
Recommended by92%of homeowners
Avatar for Vantage Security System Installation, LLC
Vantage Security System Installation, LLC
5.0(
9
)
Surveillance Cameras - Install or Repair

Serving Thornton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"Jack and Eric at Vantage Security Installation went above and beyond from the initial consultation to the final walkthrough. They took the time to explain all of my options clearly, helped me choose the best setup for my home, and worked efficiently on installation day. I would highly recommend this company to anyone looking to get security cameras!"
Project pictures
Project pictures
Project pictures
Project pictures
Project pictures

+2

Response time6 hrs
Response rate91%
2 neighbors recently requested a quote
Avatar for Allen, Morgan & Shields, LLC
Allen, Morgan & Shields, LLC
4.8(
36
)
Surveillance Cameras - Install or Repair - For Business

Serving Thornton, CO and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"I would strongly recommend Allen, Morgan, and Shields LLC for any type of security camera project you might have. Mr. Faisal did a great job quoting me the exact system we needed following our specifications. His technician did an incredible job and finished our project within 2 days. Very great quality, communication, and service."
Response time1 day
4 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Digital Concepts
Digital Concepts
4.8(
118
)
Surveillance Cameras - Install or Repair - For Business

Serving Thornton, CO and surrounding areas

Approved

In business since 2010

Free estimates

Customers say: Quick response

"We recently needed to upgrade our home s WiFi coverage to get us the bandwidth necessary for multiple home security cameras. Anthony came out to my home, free of charge, to assess our situation and give us a quote. The proposed solution and the quote were both great. What s more, Anthony was super patient with me as I asked lots of neurotic follow-up questions by email. On the day of the project, he came with a partner, calling about 45 minutes ahead to let us know his ETA. He and his partner were both courteous and respectful, and they both wore masks without me having to ask (this work took place in the age of COVID-19). Partway through the project, I threw in some last minute thoughts about a new TV antenna and Anthony graciously agreed to do that work the same day, for a very fair price. At the end of the project we realized that part of the WiFi system did not quite meet my initial expectations for specifications. Not a deal breaker, but also not what we were expecting. Anthony acknowledged the discrepancy and provided a fair discount to make up for it. The job he did was completed safely, and they made it look very clean in the end. When you re poking holes in walls, you always want to make sure it looks professional when all is said and done. Anthony nailed it. I m very happy with the service I received and I would work with Digital Concepts again in the future, should such needs arise."
TV Mount
Denver Metro Area
Security Cameras
ClearSream 4
Response time12 hrs
3 neighbors recently requested a quote
Recommended by99%of homeowners
Avatar for System Communications
System Communications
4.8(
25
)
Surveillance Cameras - Install or Repair - For Business

Serving Thornton, CO and surrounding areas

Approved

In business since 1989

Free estimates

Credit card accepted

System Communications is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests and make their concerns the basis of our business.

Response time3 hrs
Response rate86%
5 neighbors recently requested a quote
First Class Security Systems
4.0(
6
)
Alarm or Security System - InstallAlarm or Security System - RepairAlarm or Security System - Install - For Business+4 more

Serving Thornton, CO and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

"This company was about twice the cost as another system and couldn't provide a camera or other cost-effective alternative solution to the area I needed to most monitor."
Response time1 day
Response rate100%
2 neighbors recently requested a quote
Avatar for EHA Network Services
EHA Network Services
5.0(
12
)
Alarm or Security System - InstallAlarm or Security System - MonitorBuilding Automation System - Install or Service - For Business+2 more

Serving Thornton, CO and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

Evolving Home Automation is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

Church Face Lift
Church Face Lift
Church Face Lift
TV Install
TV Install

+6

1 neighbors recently requested a quote
Recommended by58%of homeowners
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Home Security Systems questions, answered by experts

A potential weak link in any security system is poor connection strength or dropped signals, particularly in the case of a fully wireless system. You also want to ensure a reliable connection to get a hold of your service provider quickly. Also, you should exercise caution when handing out sign-in credentials to people outside the household.

Yes, most pros encourage you to change your locks when you move into a new home. While the previous owner may hand you their keys, you have no way of knowing whether other copies exist elsewhere. Changing your locks as soon as you move in is a great way to ensure that you can enjoy new, fully functioning locks that will work with your unique key or code.

False alarms happen, and they could be due to a problem you need to troubleshoot, like faulty wiring, a mistaken setting, or the system needing an update. Turn off your system by disconnecting its power supply (both the battery and transformer) and give the manufacturer a call to see what they advise. 

It depends on the type of sensor your home security system uses. If it’s a motion detector, any moving thing could set it off, from a roaming pet to a wind-blown curtain. Contact sensors would be triggered by the window being opened or moved. Also, be aware that any sensors placed too close to your vents could trigger false alarms whenever your heat or air conditioning is running.

While many security cameras rely on an internet connection to transmit footage and store it in the cloud, not all of them stop working when the Wi-Fi is off. Some models are designed to function offline by using local storage options, such as a microSD card or a network-attached storage (NAS) device. These cameras can continue to record footage even without an internet connection. You can then access the stored data once the Wi-Fi is restored.

The Thornton, CO homeowners’ guide to home security system services

From average costs to expert advice, get all the answers you need to get your job done.