Top-rated home security system pros.

Best home security system pros near Greenwich, CT

Enter your zip and get matched with up to 5 pros

Need a pro for your home security system service project in Greenwich, CT?

Select your specific project to find the pro for you.

TRUSTED BY GREENWICH, CT HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon44
    Verified home security system services reviews

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

Avatar for Protect Your Home
Protect Your Home
2.6(
6
)
Alarm or Security System - InstallAlarm or Security System - Monitor

Serving Greenwich, CT and surrounding areas

Approved (Corporate)

In business since 1998

Free estimates

Credit card accepted

Protect Your Home is a leader in the home security industry, providing safety and peace of mind to more than 1.5 million families nationwide. Since we emerged in 1998, we've grown from a company of few to having over 2,000 high performance team members, three locations in Indianapolis, a sales center in Kentucky, and over 128 field branches across the country—and we're still growing. \n \nFor nearly 20 years, Protect Your Home has partnered with ADT®, the #1 name in home security. Today, with our national reach, we are one of ADT's biggest partners and the only partner to be designated as an Authorized Premier Provider. \n \nOur commitment to serving others combined with our projects, events, and culture contribute to the development of our team professionally, personally, and financially. \n \nIt's our mission. It's who we are. It's our legacy. \n

SA and Homeowner
Recommended by100%of homeowners
Avatar for Mario's Electrical Technologies LLC
Mario's Electrical Technologies LLC
5.0(
3
)
Smart Home System - Install or Service

Serving Greenwich, CT and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's custom needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. \n

Panel Upgrade(400 Amp)
Panel Upgrade(400 Amp)
Panel Upgrade(400 Amp)
Panel Upgrade(400 Amp)
Panel Upgrade(400 Amp)

+3

41 neighbors recently requested a quote
Avatar for 1st Security USA
1st Security USA
4.6(
362
)
Alarm or Security System - InstallAlarm or Security System - Install - For BusinessAlarm or Security System - Monitor+7 more

Serving Greenwich, CT and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"Jeremy came out to my house to explain 1st Security's system (co-branded system with alarm.com), and gave me an amazingly good deal with the best pricing possible. The thing that amazed me was that 1st Security's pricing (both upfront equipment cost and the monthly monitoring charge, with full access to smart phone system) was LESS than the do-it-yourself options like FrontPoint. Yes--it was less than FrontPoint, even though 1st Security's pricing includes FULL installation by a professional (Larry, who was amazing--spent hours at my house making sure everything was right and teaching my husband and me how to use the system). Even more amazingly, 1st Security's monthly rate (again, less than FrontPoint) includes service, meaning that there is NO house-call charge, the way there was with my previous alarm company. If anything breaks, etc., they will come out and fix/replace it! Jeremy and Larry were both awesome--helpful, courteous, professional, prompt, etc. I highly HIGHLY recommend them and 1st Security. If you're thinking of going with a DIY alarm company to save money, don't bother--call 1st Security. They will also match other companies' prices!"
Recommended by94%of homeowners
...
Showing 1-10 of 116
Home Security Systems FAQs, answered by experts

A home security system can be a worthwhile investment for several reasons. Financially, it may qualify you for a discount of up to 20% on your home insurance premiums, which can help offset the initial setup costs and any ongoing monitoring or subscription fees. For many, the primary benefit is the peace of mind that comes with enhanced security, especially for those living in areas with higher crime rates. Ultimately, whether a system is worth it depends on your personal preferences, the value of the assets you wish to protect, and your overall safety concerns.

Smart deadbolts are a worthwhile investment for homeowners seeking more convenience, flexibility, and advanced features than a traditional deadbolt can provide. While a strong conventional deadbolt offers sufficient security for most, smart deadbolts provide significant upgrades.

Key benefits include keyless entry via smartphone, keypads, or biometric sensors, and the ability to lock or unlock your door remotely. You can also manage access for guests by creating temporary codes, eliminating the need for physical keys and the risk of them being lost or duplicated. Many models integrate with smart home systems and offer features like automatic locking, entry-exit monitoring, and tamper alerts with encryption for enhanced security.

However, there are downsides to consider. Smart deadbolts are more expensive than their traditional counterparts and rely on batteries and wireless networks to function. This dependency introduces potential vulnerabilities, such as hacking by skilled intruders and privacy concerns. Installation can also be more complex. Despite these drawbacks, the added layer of convenience and protection makes them a compelling option for many.

To prevent false alarms, motion detectors need proper placement and settings. Start by installing them away from pets and windows where outside movement could set them off. Adjust the sensitivity settings to reduce the likelihood of it detecting minor motions. Consider using dual-tech sensors, for example passive infrared (PIR) and microwave technology, to improve accuracy and reduce false alarms. And don’t forget regular maintenance—cleaning the sensor and checking for any obstructions can go a long way in making sure your detectors run smoothly.

If you want to make more home security upgrades to your perimeter, consider installing a smart automatic gate opener and a security camera. These will allow you to see who’s at the gate and open it for them (or not). You can learn how to install an automatic gate opener yourself or hire a professional for a little extra.

Your best bet is to install a bracket that secures to the bottom of the unit and the side of your house. You should still secure the AC unit in the open window using some of the other methods already listed, but a bracket is best to ensure that it stays put—both during operation and in case of an attempted theft.

The Greenwich, CT homeowners’ guide to home security system services

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