How do I know if a window is energy efficient?

• <div><p>Energy-efficient windows are judged on their performance according to a few different factors, including heat transfer, air leakage, light transference, and condensation resistance. If you're unsure whether a window is energy-efficient, look for an ENERGY STAR® label from the <a href="https://www.energystar.gov/">U.S. Environmental Protection Agency (EPA)</a>. If various products, including windows, meet energy-efficiency standards set by the federal government, the EPA issues this label to help consumers identify energy-efficient products.</p></div>

What elements influence the pricing of window installations?

• <div><p>Costs depend on window type, frame material, labor, and whether custom sizing is required.</p></div>

What makes a window fail?

• <div><p>A window may fail because of age, defective mechanisms, or moisture. Depending on the issue, the window may be fixed with simple repairs. Otherwise, you’ll have to invest in replacing it. You can avoid damaged windows but keeping up with <a href="https://www.angi.com/articles/window-maintenance-tips.htm">window maintenance</a>. </p></div>

How long do hurricane windows last?

• <div><p>On average, hurricane windows last between 20 and 30 years. But some windows only last 10 years, while others can last 50 years or longer. Vinyl hurricane windows have a shorter lifespan than aluminum, so invest in high-quality hurricane windows and properly maintain them to get the most out of your investment. </p></div>

Does condensation on windows mean poor insulation?

• <div><p>Actually, condensation can mean that your windows are more energy efficient because the seal keeps cold air out and warm air in. In some cases, windows with poor seals can lead to more condensation, but they may allow the cold and warm air to mix and reduce condensation. If you’re worried about whether or not your windows are properly insulated, have a pro assess them.</p></div>

Top 10 Best Window pros in Jefferson, NY

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

556 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.

Renewal by Andersen

552 7th Ave Suite 401

Renewal by Andersen

552 7th Ave Suite 401

Customers say: True professional

21611 local quotes requested

18 years of experience

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

"Did not start yet will be in November "

Gisele S on October 2025

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

"Did not start yet will be in November "

Gisele S on October 2025

Grady's Painting Plastering/Construction

Grady's Painting Plastering/Construction

Customers say: Quality work

56 years of experience

Free onsite estimate

WE SPECIALIZE IN THE HISTORICAL REPAIR AND RESTORATIONS FOR INTERIOR AND EXTERIOR. WE WORK THE WHOLE STATE OF NEW JERSEY, MARYLAND, WASHINGTON DC, CONNECTICUT, VIRGINA AND MASSACHUSETTS. WE ARE LICENSED AND INSURED IN ALL STATES. WE ARE WILLING TO TRAVEL, ANY JOB SMALL OR LARGE. CONSULTATION AND TRANSPORTATION FEES WILL APPLY. WE DO WINDOW REPAIR. PLASTER REPAIRS. AND ALL MASONRY REPAIRS

"We had cracks in the dyed mortar of the bricks above our garage. Grady took the time to match the color, even with the color having aged 10 years, and you would not even be able to tell that there was new mortar. If your project is anything like ours, you will not be disappointed."

Bradley S on August 2024

WE SPECIALIZE IN THE HISTORICAL REPAIR AND RESTORATIONS FOR INTERIOR AND EXTERIOR. WE WORK THE WHOLE STATE OF NEW JERSEY, MARYLAND, WASHINGTON DC, CONNECTICUT, VIRGINA AND MASSACHUSETTS. WE ARE LICENSED AND INSURED IN ALL STATES. WE ARE WILLING TO TRAVEL, ANY JOB SMALL OR LARGE. CONSULTATION AND TRANSPORTATION FEES WILL APPLY. WE DO WINDOW REPAIR. PLASTER REPAIRS. AND ALL MASONRY REPAIRS

"We had cracks in the dyed mortar of the bricks above our garage. Grady took the time to match the color, even with the color having aged 10 years, and you would not even be able to tell that there was new mortar. If your project is anything like ours, you will not be disappointed."

Bradley S on August 2024

MFX Development llc

MFX Development llc

Recommended by 100% of Angi customers

We cover all aspects of residential and commercial remodeling as well as new construction projects. Fully insured with free on site and mobile estimates.

"It is a great company and provide a good service. I will use them again."

MILTON L on March 2022

We cover all aspects of residential and commercial remodeling as well as new construction projects. Fully insured with free on site and mobile estimates.

"It is a great company and provide a good service. I will use them again."

MILTON L on March 2022

CUFN

No reviews yet

CUFN

No reviews yet

Hello, my name is Dillon I am starting my own construction business. I do everything from framing in doors and windows to moving walls from one side to the other. I can do pretty much anything. I work by myself or with a helper as of right now.

Gunner Roofing

Gunner Roofing

Customers say: True professional

Recommended by 96% of Angi customers

Gunner Roofing knows your home is everything. That’s why Gunner was founded with one clear mission: to bring your home improvement project to life with exceptional quality, a personalized experience, and innovative tech to make your project easier than ever. We’re the first roofing company to service nationally as well as the first to offer accurate online quotes in under an hour meaning no more hours on the phone or juggling appointments to meet a dodgy contractor. Gunner is here to make it easy for you - we even help you navigate financing your project through Wells Fargo and assist with permitting. We’re proud to be your go-to roofing, siding, windows, and gutter installer, working with only the industry’s most trusted suppliers like Andersen Windows, Brava Roof Tile, GAF, and James Hardie. Whether you want to upgrade your home’s exterior or ensure your house will protect your family through the next storm, Gunner is excited to work with you as your trusted partner. Skeptical? We get it, this is no small decision. Check out our hundreds of 5-star reviews on google and find us on Inc. 5000 Fastest Growing Companies List, Fast Company’s Most Innovative Companies List, Good Housekeeping Home Reno Award Winners Page, Architectural Digest and more! If you’re curious about how much your project would cost, get your free roofing quote at https://www.gunnerroofing.com/ today - no commitment necessary.

"I am sure that all positive reviews for this company are fake. Nothing that was promised to me was delivered. My siding project is still ongoing for over 1 month. Was told that it would be done in week. Had one rain day. They have system like this: 1) sales person who never installed anything he will promise you things that obviously are not true, 2) crew that is subcontracted but not Gunner, mine was driving for over 2 hours away, 3) person who oversees the project but has little control over anything, no supply, doesn't know the crew, crew does not listen to him, main office does not listen to him, 4) main office does not reply to you. They just tell me to talk to project manager who has no control. So you understand that if there are any issue you are on your own. Quality or work is not good. Many times I had to point to the crew what's wrong, planks are broken yet they were still installing it, caulking is done they way that I can do it better, they cut wires to awning etc"

Eduard S on September 2025

Gunner Roofing knows your home is everything. That’s why Gunner was founded with one clear mission: to bring your home improvement project to life with exceptional quality, a personalized experience, and innovative tech to make your project easier than ever. We’re the first roofing company to service nationally as well as the first to offer accurate online quotes in under an hour meaning no more hours on the phone or juggling appointments to meet a dodgy contractor. Gunner is here to make it easy for you - we even help you navigate financing your project through Wells Fargo and assist with permitting. We’re proud to be your go-to roofing, siding, windows, and gutter installer, working with only the industry’s most trusted suppliers like Andersen Windows, Brava Roof Tile, GAF, and James Hardie. Whether you want to upgrade your home’s exterior or ensure your house will protect your family through the next storm, Gunner is excited to work with you as your trusted partner. Skeptical? We get it, this is no small decision. Check out our hundreds of 5-star reviews on google and find us on Inc. 5000 Fastest Growing Companies List, Fast Company’s Most Innovative Companies List, Good Housekeeping Home Reno Award Winners Page, Architectural Digest and more! If you’re curious about how much your project would cost, get your free roofing quote at https://www.gunnerroofing.com/ today - no commitment necessary.

"I am sure that all positive reviews for this company are fake. Nothing that was promised to me was delivered. My siding project is still ongoing for over 1 month. Was told that it would be done in week. Had one rain day. They have system like this: 1) sales person who never installed anything he will promise you things that obviously are not true, 2) crew that is subcontracted but not Gunner, mine was driving for over 2 hours away, 3) person who oversees the project but has little control over anything, no supply, doesn't know the crew, crew does not listen to him, main office does not listen to him, 4) main office does not reply to you. They just tell me to talk to project manager who has no control. So you understand that if there are any issue you are on your own. Quality or work is not good. Many times I had to point to the crew what's wrong, planks are broken yet they were still installing it, caulking is done they way that I can do it better, they cut wires to awning etc"

Eduard S on September 2025

J&D Windows and Doors General Contracting, LLC.

J&D Windows and Doors General Contracting, LLC.

Customers say: Quick response

Recommended by 100% of Angi customers

Fully insured General Contracting company with free home estimates specializing in Windows and Doors. Our products have a life time warranty with them as well as a variety of different options to accommodate your wants, needs, and budgets! Check out our Facebook, google page, and website listed below for yourself to see that you’re in good hands with J&D! To help with your long and late work hours, we are now offering E-Quotes on all windows, sliding glass doors, and ProVia door products! Go to our website, click on E-Quotes to learn more.

"Ok so I am writing a review everywhere I can for David and crew. Basically havr been using David and J&D for every aspect of the house! Windows, Doors, Facade wall, Kitchen, Siding etc. Have yet to have any bad experience with these guys!! Wonderful, efficient, courteous, professional, and I cannot say this enough… what a crack up! Thank you so much guys for taking care of me and my winderful “new” home. It is an honor and a pleasure working with you!"

Danielle M on September 2024

Fully insured General Contracting company with free home estimates specializing in Windows and Doors. Our products have a life time warranty with them as well as a variety of different options to accommodate your wants, needs, and budgets! Check out our Facebook, google page, and website listed below for yourself to see that you’re in good hands with J&D! To help with your long and late work hours, we are now offering E-Quotes on all windows, sliding glass doors, and ProVia door products! Go to our website, click on E-Quotes to learn more.

"Ok so I am writing a review everywhere I can for David and crew. Basically havr been using David and J&D for every aspect of the house! Windows, Doors, Facade wall, Kitchen, Siding etc. Have yet to have any bad experience with these guys!! Wonderful, efficient, courteous, professional, and I cannot say this enough… what a crack up! Thank you so much guys for taking care of me and my winderful “new” home. It is an honor and a pleasure working with you!"

Danielle M on September 2024

Off Campus, Inc.

Off Campus, Inc.

Customers say: Quick response

Recommended by 100% of Angi customers

Off Campus, Inc. is a full service, privately held commercial and residential real estate investment and redevelopment firm. Off Campus focuses on college housing, residential rentals and commercial properties in and around college towns. Off Campus has the knowledge, experience and capability of rapidly deploying resources for site selection, acquisition, financing, construction, leasing, management and operations. Off Campus offers a variety of real estate investment advisory strategies that cater to our clients investment objectives, goals and risks. Off Campus currently operates in the Northeast region with holdings in New York, New Hampshire and Maine. We love what we do and is quite evident from our properties, management services to our team at Off Campus.