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Avatar for ADT

ADT

3750 Priority Way South Dr
4.53(
731
)
Approved Pro

ADT

3750 Priority Way South Dr
4.53(
731
)
Approved Pro
Customers say: Terrific value
3620 local quotes requested
151 years of experience

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

"There’s nothing like having the best of the best. I’ve used the other big security names before like Vivint and Brinks. They are OK. But after getting acclimated with ADT, it is clear why they are the best. Pricing is fair, equipment is reliable, and every one genuinely seems happy at their job. This goes a long way to a paying customer. Just our perspective for anyone else that is considering all of the big providers in the alarm system landscape. ADT is well well worth it."

Brianne E on October 2025

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

"There’s nothing like having the best of the best. I’ve used the other big security names before like Vivint and Brinks. They are OK. But after getting acclimated with ADT, it is clear why they are the best. Pricing is fair, equipment is reliable, and every one genuinely seems happy at their job. This goes a long way to a paying customer. Just our perspective for anyone else that is considering all of the big providers in the alarm system landscape. ADT is well well worth it."

Brianne E on October 2025


Avatar for Highland Window & Siding Company LLC

Highland Window & Siding Company LLC

998 Farmington Avenue
4.85(
154
)
Approved Pro

Highland Window & Siding Company LLC

998 Farmington Avenue
4.85(
154
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
105 local quotes requested

As a multi-year Super Service Award winner, Highland Window Company LLC is a family owned and operated business with over 18 years of industry experience. Our owner, Marc Cowan, will come to your home to deliver your exact written quote in 30 minutes. NO high pressure sales tactics and NO sales people working for high commissions. It is our goal to build a relationship with our clients that will last a lifetime. What sets us apart from our competitors is our dedication to put our customers first. All of our high quality, energy star rated products are covered by a lifetime transferable warranty. Our highly trained installers work only for Highland and have been working with Highland for over 10 years. That means that every review you read on Angie’s List was installed by the same team. The same team that will carry out your installation. Angie’s List members should feel confident about hiring Highland for all window, siding and roofing needs. We guarantee that we will take the stress out of home improvement!

"We have had many home renovation projects done over the past two years. Marc and his team replaced most of our windows about 6 months ago. Of all the services we had done, I would put Marc & Highland Windows at the top of the list. Great product, great value, very responsive, very professional. We shopped around plenty before deciding on Highland, and we very happy we went with them."

Eric S on September 2022

As a multi-year Super Service Award winner, Highland Window Company LLC is a family owned and operated business with over 18 years of industry experience. Our owner, Marc Cowan, will come to your home to deliver your exact written quote in 30 minutes. NO high pressure sales tactics and NO sales people working for high commissions. It is our goal to build a relationship with our clients that will last a lifetime. What sets us apart from our competitors is our dedication to put our customers first. All of our high quality, energy star rated products are covered by a lifetime transferable warranty. Our highly trained installers work only for Highland and have been working with Highland for over 10 years. That means that every review you read on Angie’s List was installed by the same team. The same team that will carry out your installation. Angie’s List members should feel confident about hiring Highland for all window, siding and roofing needs. We guarantee that we will take the stress out of home improvement!

"We have had many home renovation projects done over the past two years. Marc and his team replaced most of our windows about 6 months ago. Of all the services we had done, I would put Marc & Highland Windows at the top of the list. Great product, great value, very responsive, very professional. We shopped around plenty before deciding on Highland, and we very happy we went with them."

Eric S on September 2022


VELUX America

2173 HAWKINS ST STE H
New on AngiNew on Angi
Approved Pro

VELUX America

2173 HAWKINS ST STE H
New on AngiNew on Angi
Approved Pro
571 local quotes requested

Start with skylights! At VELUX, our mission is clear: we're dedicated to transforming your space with natural light and fresh air with skylights. Whether you're looking to replace old skylights or install brand-new ones, we will guide you every step of the way. Why Choose VELUX? =================== When it comes to skylights and roof windows, VELUX is the global leader. Here's why you should trust us to transform your home: 1. Innovation and Quality: VELUX skylights are renowned for their innovation and unmatched quality. They're designed to let in abundant natural light while keeping your space leak-free and energy-efficient. 2. Huge Product Selection: You’ll have access to a wide range of skylight options, from fixed to vented skylights. And we are here to help tailor the selection to suit your specific needs and style preferences. 3. Expertise: We take pride in what we do at VELUX, and our team is highly trained to guide you through the entire process. From selecting the perfect product for your space to providing valuable recommendations, we're committed to making sure your skylight project is a complete success. 4. Professional Installation Partners: We don't stop at product selection and recommendations; we also match you with a VELUX-trained installer who will handle the installation of your skylights with precision and expertise.

Start with skylights! At VELUX, our mission is clear: we're dedicated to transforming your space with natural light and fresh air with skylights. Whether you're looking to replace old skylights or install brand-new ones, we will guide you every step of the way. Why Choose VELUX? =================== When it comes to skylights and roof windows, VELUX is the global leader. Here's why you should trust us to transform your home: 1. Innovation and Quality: VELUX skylights are renowned for their innovation and unmatched quality. They're designed to let in abundant natural light while keeping your space leak-free and energy-efficient. 2. Huge Product Selection: You’ll have access to a wide range of skylight options, from fixed to vented skylights. And we are here to help tailor the selection to suit your specific needs and style preferences. 3. Expertise: We take pride in what we do at VELUX, and our team is highly trained to guide you through the entire process. From selecting the perfect product for your space to providing valuable recommendations, we're committed to making sure your skylight project is a complete success. 4. Professional Installation Partners: We don't stop at product selection and recommendations; we also match you with a VELUX-trained installer who will handle the installation of your skylights with precision and expertise.


Avatar for Power Home Remodeling

Power Home Remodeling

60 Commerce Dr
4.67(
362
)
Approved Pro

Power Home Remodeling

60 Commerce Dr
4.67(
362
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
193 local quotes requested

As the nation’s largest full-service exterior home remodeler, we are backed by over 1,000+ Angi Super Service awards and more than one million happy customers. Why? Because we treat each job as an audition. An opportunity to prove ourselves to you. And the results speak for themselves. So make your home all it was meant to be with our unrivaled exterior services. Contact us today for a free, no obligation estimate on replacement windows, roofing, siding, doors, or attic insulation.

"The workers arrived on-time, were very professional and did a great job."

Eric M on August 2025

As the nation’s largest full-service exterior home remodeler, we are backed by over 1,000+ Angi Super Service awards and more than one million happy customers. Why? Because we treat each job as an audition. An opportunity to prove ourselves to you. And the results speak for themselves. So make your home all it was meant to be with our unrivaled exterior services. Contact us today for a free, no obligation estimate on replacement windows, roofing, siding, doors, or attic insulation.

"The workers arrived on-time, were very professional and did a great job."

Eric M on August 2025


Avatar for Swanson Electric LLC

Swanson Electric LLC

5.00(
42
)
Approved Pro

Swanson Electric LLC

5.00(
42
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
59 local quotes requested

Swanson Electric is operating out of Litchfield CT providing service to Litchfield county. I offer the following services, General lighting, troubleshooting, switch/outlet repair and installation, tv mounting, smart devices, radio RA and programming, homeworks panels, service upgrades, remodels, new construction, portable generator installs and much more!

"Troy communicates well. He gave me several options on how to complete the work I needed done. The work was properly completed as discussed. Troy and his assistant cleaned up after themselves. I will hire Troy to do additional electrical work as needed. Thanks"

Richard H on September 2025

Swanson Electric is operating out of Litchfield CT providing service to Litchfield county. I offer the following services, General lighting, troubleshooting, switch/outlet repair and installation, tv mounting, smart devices, radio RA and programming, homeworks panels, service upgrades, remodels, new construction, portable generator installs and much more!

"Troy communicates well. He gave me several options on how to complete the work I needed done. The work was properly completed as discussed. Troy and his assistant cleaned up after themselves. I will hire Troy to do additional electrical work as needed. Thanks"

Richard H on September 2025


"We are extremely happy with how our new windows and new front door turned out. After some unexpected challenges with the way our home was built, our installation crew quickly and efficiently adapted to make sure our windows and door were installed with expert care. Every time we see our new beautiful picture window we are left breathless! And our beautiful front door is the perfect upgrade for the look of our home. Thank you RBA!"

JENNIFER S on August 2025

Replacement Window Installation, Replacement Patio Door Installation, Replacement Entry Door Installation

"We are extremely happy with how our new windows and new front door turned out. After some unexpected challenges with the way our home was built, our installation crew quickly and efficiently adapted to make sure our windows and door were installed with expert care. Every time we see our new beautiful picture window we are left breathless! And our beautiful front door is the perfect upgrade for the look of our home. Thank you RBA!"

JENNIFER S on August 2025


Avatar for Hammertime Contracting, LLC

Hammertime Contracting, LLC

107 Merryall Road
4.38(
23
)
Approved Pro

Hammertime Contracting, LLC

107 Merryall Road
4.38(
23
)
Approved Pro
Customers say: Terrific value
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
40 years of experience

Hammertime Contracting, LLC, is your premier choice for residential addition and remodeling work. We have provided high quality work and friendly customer service since 1985. Our service keeps our customers coming back to us for all their jobs. Big or small we do it all. Call today you'll be happy you did!

"Deck finished and it looks very nice"

Anne G on May 2023

Hammertime Contracting, LLC, is your premier choice for residential addition and remodeling work. We have provided high quality work and friendly customer service since 1985. Our service keeps our customers coming back to us for all their jobs. Big or small we do it all. Call today you'll be happy you did!

"Deck finished and it looks very nice"

Anne G on May 2023


Avatar for Castle - The Window People

Castle - The Window People

109 Gaither Drive, Unit 309
4.17(
948
)
Approved Pro

Castle - The Window People

109 Gaither Drive, Unit 309
4.17(
948
)
Approved Pro
Customers say: Quality work
116 local quotes requested
34 years of experience

Are you looking for the very best replacement window money can buy? You've found it with Castle Windows! Replacing your home's windows with high-performance Castle Windows is one of the wisest home improvement investments you'll ever make. Castle Windows is dedicated to saving you time, money and frustration. You can trust your custom-made windows from Castle Windows. Committed to producing the best product possible, Castle Windows confidently stands behind our work with a lifetime limited warranty to protect your window investment. For over 30 years Castle Windows has been designing windows to fit your world. We offer a wide selection of top quality, custom-made windows to fit your home because we know you appreciate variety, expect quality and demand affordability. We are able to make a window to almost any specification including multiple colors, grid patterns or application without sacrificing quality or warranty. Call us today for your free estimate!

"."

Dorothy B on July 2024

Are you looking for the very best replacement window money can buy? You've found it with Castle Windows! Replacing your home's windows with high-performance Castle Windows is one of the wisest home improvement investments you'll ever make. Castle Windows is dedicated to saving you time, money and frustration. You can trust your custom-made windows from Castle Windows. Committed to producing the best product possible, Castle Windows confidently stands behind our work with a lifetime limited warranty to protect your window investment. For over 30 years Castle Windows has been designing windows to fit your world. We offer a wide selection of top quality, custom-made windows to fit your home because we know you appreciate variety, expect quality and demand affordability. We are able to make a window to almost any specification including multiple colors, grid patterns or application without sacrificing quality or warranty. Call us today for your free estimate!

"."

Dorothy B on July 2024


Avatar for Wa/ve Sound and Security, LLC

Wa/ve Sound and Security, LLC

32 Pleasant Street
4.93(
54
)
Approved Pro

Wa/ve Sound and Security, LLC

32 Pleasant Street
4.93(
54
)
Approved Pro
Customers say: True professional
50 local quotes requested
18 years of experience

Founded in 2007, Wa/ve Sound and Security, LLC has evolved as an industry leader in providing innovative solutions for the security, entertainment, and productivity of our customers. Our focus is to educate the customer so they can make the most informed decision on the products they are looking to purchase. We maintain a clean work environment, cleanup is important to us - we strive to leave the work site better than how we found it!

"Wes did an amazing job getting our dental practice music back up and running after a power surge took it out. His prompt attention brought the morality back up in the office while treating the patients. He was extremely communicative throughout the whole process. Thank you Wes!"

Samantha V on March 2025

Founded in 2007, Wa/ve Sound and Security, LLC has evolved as an industry leader in providing innovative solutions for the security, entertainment, and productivity of our customers. Our focus is to educate the customer so they can make the most informed decision on the products they are looking to purchase. We maintain a clean work environment, cleanup is important to us - we strive to leave the work site better than how we found it!

"Wes did an amazing job getting our dental practice music back up and running after a power surge took it out. His prompt attention brought the morality back up in the office while treating the patients. He was extremely communicative throughout the whole process. Thank you Wes!"

Samantha V on March 2025


Avatar for Total Remodeling & Repair, LLC

Total Remodeling & Repair, LLC

144 Doty Circle
5.00(
5
)
Approved Pro

Total Remodeling & Repair, LLC

144 Doty Circle
5.00(
5
)
Approved Pro
77 local quotes requested
12 years of experience

At Total Remodeling, we're more than a remodeling company, we're your partner in creating a home that reflects your family's style, comfort, and needs. We've been dedicated to delivering high-quality home improvement services to families throughout Connecticut and Massachusetts. Our commitment to excellence is rooted in our use of premium materials and expert craftsmanship. From energy-efficient windows to durable roofing and secure doors, we provide solutions that enhance the beauty, safety, and efficiency of your home.

"Everyone I talked to was really friendly, and I never had any issues. They kept me in the loop during the appointment, and everything went smoothly. They did a solid job."

Jack W on August 2025

At Total Remodeling, we're more than a remodeling company, we're your partner in creating a home that reflects your family's style, comfort, and needs. We've been dedicated to delivering high-quality home improvement services to families throughout Connecticut and Massachusetts. Our commitment to excellence is rooted in our use of premium materials and expert craftsmanship. From energy-efficient windows to durable roofing and secure doors, we provide solutions that enhance the beauty, safety, and efficiency of your home.

"Everyone I talked to was really friendly, and I never had any issues. They kept me in the loop during the appointment, and everything went smoothly. They did a solid job."

Jack W on August 2025

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FAQs for security door installation projects in Cornwall, CT

The average cost of a home security system is about $700, ranging from $280 to $1,150. Costs to consider include equipment, surveillance fees, and other additional features. Cost factors that determine your system’s price include the type of security system, materials, labor, activation fees, monthly fees, and permits. Additional features and upgrades may include:

  • Video surveillance monitoring: $40–$65 per month

  • Smart home locks: $150

  • Smart home lighting: $15–$90

  • Smart smoke, fire, and carbon monoxide alarms: $35–$100

  • Smart thermostat: $130–$500

Door installation usually takes three and four hours, including removing the old door and frame, fitting the new door and frame in place, shimming it to make sure it’s perfectly level, and making adjustments to the hinges and locking mechanisms to ensure proper functionality. A door-hanging professional can replace an interior door in between one and two hours. Door installation will take significantly longer if your installer needs to create a wall opening, and it can take less time if the existing door frame remains.

The average cost to install a door is around $1,100, but you could pay anywhere from $150 for a hollow-core interior door installation up to $2,000 or a high-end exterior door installation. There are a few cost factors to consider to get an accurate price, including whether your wall opening exists, the type of door, the quality and security of the door, whether you need to replace the frame, and the door size. You can expect to pay $150 to $700 for a standard 36-by-80-inch door and between $400 and $1,600 for an 80-by-48-inch door.

Yes, a home security system can be worth it for your peace of mind alone, but it can also save you up to 20% on your home insurance. The insurance savings will help defray the initial setup costs and subscription costs over time. Locations with higher crime rates also make home security systems a valuable investment, but it ultimately depends on your personal preferences and asset values.

It’s possible to install a door yourself if the wall opening already exists, but the work is rather complicated, and a professional installation is usually well worth the investment. For your door to work and close properly, you’ll need to shim and level the door frame in your wall perfectly, which can be difficult. Additionally, we recommend you always hire a professional door installer to place an exterior door, as mistakes during the installation process can lead to poor security for your home.

The Cornwall, 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.