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TRUSTED BY SHERMAN, CT HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon141
    Verified security door installation services reviews

Top-Rated Security door installation pros in Sherman - Updated Nov 2026

Avatar for ADT
ADT
4.5(
889
)
Security Bars - Install or Repair - For Business

Serving Sherman, CT and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1874

Free estimates

Emergency services offered

"Last weekend had someone pry our side door open to our exterior garage and the ADT door sensor picked it up immediately. The alarm siren was loud and scared the person off. Someone from the response center called within 30 seconds. We’re fortunate that the security system did what it is supposed to. Feels like we made the right call going with an ADT security system."
Home Security Essentials
Smart Home Security
Cameras
Our Team
Home Security Essentials

+35

36 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for The Builders & Cleaners
The Builders & Cleaners
4.9(
122
)
Security Bars - Install or RepairSecurity Bars - Install or Repair - For BusinessSecurity or Storm Shutters - Install+3 more

Serving Sherman, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

Based in West Haven, Connecticut, our team has provided an excellent, affordable service to more than thousands of houses over the years. We are committed to supporting our customers throughout the evaluation process, during the service itself and are available to answer any queries once the work is complete. \nWe are a licensed and fully insured company aiming to respond to all requests involving our services within 24 hours or less. Our professional and knowledgeable staff have a combined experience of over 12 years within the construction, air duct cleaning, and landscaping industries, ensuring guaranteed satisfaction with every job. \nWe pride ourselves in providing a safe, hazard-free environment and maintaining respectful, cordial communications with all of our clients. All technicians can be relied on to keep project sites clean both during and after the work is complete. \n

Dust out from the ductwork
Dust out from the ductwork
Clean vent
Clean vent
Dust in the return

+1837

Response time1 day
Response rate92%
Recommended by85%of homeowners
Avatar for Agile Construction and Home Improvement
Agile Construction and Home Improvement
4.8(
80
)
Security Bars - Install or Repair

Serving Sherman, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"Rafael was great - he fixed our front door knob and lock, replaced another door handle, and our towel bar. He worked us into his busy schedule and came by on a day that was best for me. Rafael picked up parts he needed at Home Depot after assessing what we needed, and efficiently completed all three jobs."
Entry porch
House flip
House flip
House flip
House flip

+232

Response time4 days
Recommended by52%of homeowners
Avatar for 1st Security USA
1st Security USA
4.6(
362
)
Security Bars - Install or Repair - For Business

Serving Sherman, CT and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"It's all very user friendly and reliable. Jeremy helped get us setup with our new system - he was great, very informative and candid. Larry came out and installed everything, and he was a pleasure. I totally recommend 1st Security USA to anyone in the Washington DC metro area."
Recommended by94%of homeowners
Avatar for Security One
Security One
4.1(
456
)
Security Bars - Install or Repair - For Business

Serving Sherman, CT and surrounding areas

In business since 2007

Credit card accepted

"The job went very smoothly. The tech ran a bit late, but he called to say so. He installed a keypad by the front door and assessed the house for security. He suggested, since there are several casement windows in the living room and adjoining dining room that a breaking glass sensor would work better and be more cost-effective than alarming all the windows. He did alarm a door that the previous company (inherited when we bought the house twenty-three years ago) had not considered significant. I feel safer with the current sensor choices than the ones I had before.
He took the time to make sure I knew how to use the system, so I am very pleased with the service. My one caveat: I was told that the motion sensor would not register my smaller pets (two cats) because they weigh under forty pounds. They must have set off the sensor, though, because the police responded. The system certainly alerts the authorities, but that motion sensor is very sensitive!
"
Pictures
Compare our Compact Door Sensors to our Competitors
Additional Photos
Additional Photos
Additional Photos

+16

Recommended by84%of homeowners
Avatar for CSI Secure Solutions
CSI Secure Solutions
4.4(
114
)
Security Bars - Install or Repair - For Business

Serving Sherman, CT and surrounding areas

In business since 2001

Free estimates

Emergency services offered

""What struck me most about Chris was his patience along with his professionalism. I had never used a private detective before and was a little nervous, but he took the time to answer all my questions and explain the process. He was extremely accessible and kept me updated on my case. If you want someone who is professional, courteous, thorough, and who gets the job done right, I highly recommend Chris and CSI Secure Solutions.""
Background Checks
Employee Check
Background Report
Surveillance
Infidelity Monitoring

+12

Recommended by85%of homeowners
Avatar for Protect Your Home
Protect Your Home
3.3(
325
)
Security Bars - Install or Repair - For Business

Serving Sherman, CT and surrounding areas

In business since 1998

Credit card accepted

"We like their service. We haven't had any problems. They are very good. This was the first time we've had an alarm/security system in our home. The supplier is ADT. I like that I can set my alarm every night before I go to bed."
Protect Your Home Vehicle
Recommended by63%of homeowners
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Security Doors FAQs, answered by experts

Professional home automation services can include automation for nearly anything in your home, so the possibilities are endless. Some of the more common things homeowners use automation for include the following:

  • Heating and cooling for automatic comfort

  • Security cameras and emergency call systems

  • Door and window sensors to detect opening, closing, and break-ins

  • Solar system automation to maximize energy savings

  • Automatic door locks

  • Garage door openers

  • Speaker systems

  • Lighting

  • Appliances

  • Smoke and CO detectors

  • Blinds and other window coverings

  • Lawn irrigation systems

  • Water monitoring

There are several strategic ways to lower your home insurance premium. The primary one is to shop around and get quotes every few years to make sure you’re getting the best deal. Also, sometimes bundling your auto and homeowner’s insurance will get you a discount on both. Finally, try to keep your credit score up; many homeowner insurance companies use credit scores to generate quotes.

The average cost to install a home security system is about $750. However, the price can range from as little as $200 for a simple wireless camera setup to $2,000 for a fully monitored, hardwired system. A typical price range is $280 to $1,150. Several factors determine the final cost, including the type of system, equipment, materials, labor, activation fees, monthly surveillance fees, and permits. Optional upgrades will also add to the price, such as video surveillance monitoring ($40–$65 per month), smart locks ($150), smart lighting ($15–$90), smart smoke and carbon monoxide alarms ($35–$100), and a smart thermostat ($130–$500).

While all security lighting systems offer different benefits, motion sensor security lights have the most advantages and the fewest cons for the average homeowner. While the upfront cost can be hefty, automatic, motion-detected activation will reduce your energy bills in the long run by ensuring the lights are only turned on when necessary. Plus, they’ll ward off intruders and help invited guests find their way onto your property in equal measure. 

One significant drawback of home automation is the increased risk of cybersecurity threats. With more connected devices in our homes, there's a greater chance that hackers might try to exploit vulnerabilities to access personal data or even control your devices. If you don't secure your smart gadgets properly, they can become entry points for cyberattacks, risking your privacy and safety. Moreover, technology isn't perfect. Sometimes, systems can malfunction or experience connectivity issues, disrupting your daily routines. The upfront cost of buying and installing smart devices can also be a hurdle for some people. 

The Sherman, CT homeowners’ guide to security door installation services

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