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TRUSTED BY GREENFIELD, MN HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon21
    Verified home security system services reviews

Top-Rated Home security system pros in Greenfield - Updated Nov 2026

Avatar for Nighthawk Security
Nighthawk Security
4.3(
100
)
Surveillance Cameras - Install or RepairAlarm or Security System - RepairAlarm or Security System - Install+5 more

Serving Greenfield, MN and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"Great experience with nighthawk! I purchased my own security cameras and needed help installing them. The technician was super knowledgeable, professional, and worked quickly. The job was done perfectly (and I’m sure it was a challenge - we live in a super old house!!). He made it seem easy! Highly recommend and will definitely be going to them for any future needs."
Commercial Fire system
Commercial Fire system
Total Connect Camera system
Before
New Panel

+1

Response time1 day
26 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for Geosync Communications
Geosync Communications
4.8(
93
)
Surveillance Cameras - Install or RepairSurveillance Cameras - Install or Repair - For Business

Serving Greenfield, MN and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Emergency services offered

Warranties offered

"Extremely professional, courteous and knowledgeable! Walked me through every step of the process, making it easy to understand and presented possible options that would work best for my home. I would highly recommend their services and will definitely use them again should a need arise."
Headend
Headend
Locker room
Practice field
Roof

+58

Response time4 hrs
Response rate98%
Recommended by79%of homeowners
Avatar for Acoustix Audio Video
Acoustix Audio Video
4.8(
30
)
Building Automation System - Install or Service - For BusinessSurveillance Cameras - Install or RepairSurveillance Cameras - Install or Repair - For Business

Serving Greenfield, MN and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction! \n \nIf you would like to see the latest technology and/or discuss your project, we would like to invite you to stop by our showroom located at 4126 Egan Drive, in Savage Minnesota.

Conference Room Shades
Conference room projector
Fireplace TV mount
Standard TV mount
Bar and Grill

+27

Response time1 day
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Lloyd Security, Inc.
Lloyd Security, Inc.
3.1(
28
)
Surveillance Cameras - Install or Repair - For Business

Serving Greenfield, MN and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"We were with another monitoring company and Lloyd Security helped us throughout the transition and even sent the cancellation request for us. They made sure that careful attention was given to the aesthetics of the installation because we did not want wires to show or have extra holes drilled. They showed up when expected and completed the job the same day as promised. It's nice to deal with a business that is not only courteous, but prompt, careful and knowledgable."
Smart Home Thermostat
3 neighbors recently requested a quote
Recommended by68%of homeowners
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Home Security Systems FAQs, answered by experts

Yes, you should always change your locks after buying a house. Do so as soon as possible after you move in. Otherwise, you won’t know who has working keys to the property, whether they’re spare keys or otherwise. If an intruder gains access to your house with a key, it may not be covered under your homeowners insurance.

Several types of deadbolts are available, including single-cylinder, double-cylinder, rim, smart, and electronic deadbolt locks. The most common type found in U.S. homes is the single-cylinder deadbolt, which uses a key on the exterior and a thumb turn on the interior. A double-cylinder deadbolt features two locking mechanisms and requires a key to be operated from both the inside and the outside.

Yes, it's possible for hackers to access wireless security cameras by guessing or stealing passwords. Additionally, your camera's cloud content can also be hacked. Finally, some criminals use Wi-Fi signal jammers to disable wireless cameras.

A security camera company will be able to advise you on where to position the cameras, ensure all of the equipment is set up properly, and do all of the installations. They’ll take factors into consideration that a non-professional might not automatically consider, like obstacles that could block a potential trespasser from the camera or how lighting may obstruct the view.

If you're wondering what you should do with your old security alarm system after installing a new one, one option is to properly dispose of it at an electronics collection facility. Otherwise, if your old system is still in good shape, you can also donate it for someone else to use in their home.

The Greenfield, MN homeowners’ guide to home security system services

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