10 Best Window Replacement Companies in Guilford, CT

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Last Updated: February 25, 2025

Replacing your windows can be expensive, but is an excellent way to increase the energy efficiency and value of your home. According to the Department of Energy, heat or cool air lost through old or damaged windows could represent 25–30% of the climate control use in your home. By upgrading to energy-efficient windows, you could save an extra $420 on your energy bills annually in Guilford. If you can't decide between window installers, this is a great way to get started. Keep reading to find the best window installers in Guilford.

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Top Pick
4.1/5
  • Great quality
  • Free assesment
  • Timely Service
Most Customizable
4.0/5
  • Holds high customer ratings
  • Offers energy-efficient products
  • Provides a lifetime labor warranty
Best Customer Service
4.0/5
  • Award winning company
  • Products made in the US
  • Knowledgeable sales representatives

Top 10 Best Window Replacement Companies in Guilford

Advertisement This site receives compensation from some of the companies featured in this listing, which may impact where and how products appear. When you click "Get Quote," you will be connected with partners who may contact you with information related to your inquiry. This listing doesn't feature all companies, products, or offers that may be available.

Renewal by Andersen of Long Island

Renewal by Andersen of Long Island Logo

Our Rating

User Rating

2029 New Hwy, Farmingdale, NY 11735 (631) 843-1713 renewalbyandersen.com

Price transparency

Educational website

Free assessment

Good customer service

Services Offered

Double-hung
Glass doors
Skylights
Bay windows
Window replacement/installation

Power Home Remodeling

Power Home Remodeling Logo

Our Rating

User Rating

60 Commerce Dr Suite 150, Trumbull, CT 06611 (203) 659-4843 powerhrg.com

Price transparency

Good customer service

Timely service

Free assessment

Services Offered

Window replacement/installation
Energy-efficient options

Smithtown Window Replacement and Doors

Smithtown Window Replacement and Doors Logo

Our Rating

User Rating

43 Landing Ave, Smithtown, NY 11787 (631) 646-2386 smithtownwindowsdoors.com

Price transparency

Educational website

Family-owned and operated

Free assessment

Energy-efficient windows and doors

Good customer service

Weekend availability

Services Offered

Glass showers
Storm/impact windows
Vinyl frames
Wood frames
Custom window designs
Metal frames
Window replacement/installation
Triple pane glass
Tempered glass
Fiberglass frames
Bay windows
Energy-efficient options
Window repair
Double-hung
Glass doors

Melville Window Replacement

Melville Window Replacement Logo

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User Rating

560 Walt Whitman Rd, Melville, NY 11747 (631) 710-7533 melvillewindowreplacement.com

Free assessment

Educational website

Timely service

Good customer service

Price transparency

Services Offered

Tempered glass
Window replacement/installation
Custom window designs
Triple pane glass
Fiberglass frames
Double-hung
Glass doors
Bay windows
Wood frames
Vinyl frames
Window repair
Metal frames
Energy-efficient options

Glass Doctor

Glass Doctor Logo

Our Rating

User Rating

354 Smithtown Blvd, Ronkonkoma, NY 11779 (631) 619-6711 glassdoctor.com

Membership plans for glass repair

Educational website

Good customer service

24/7 emergency service

Home and auto glass

Price transparency

Services Offered

Window replacement/installation
Window repair
Custom glass
Glass showers
Glass repair
Glass doors
Mirrors
Energy-efficient options

Pro Quality Home Improvements Inc.

Pro Quality Home Improvements Inc. Logo

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User Rating

1120 Little East Neck Road, West Babylon, NY 11704 (631) 393-6812 proqualityhomeimprovements.com

Educational website

Timely service

Free assessment

Free in-home consultation

Good customer service

Small business

Price transparency

No-interest financing

Services Offered

Skylights
Window replacement/installation
Energy-efficient options
Window repair
Glass doors
Bay windows

Alure Home Solutions

Alure Home Solutions Logo

Our Rating

User Rating

1999 Hempstead Tpke, East Meadow, NY 11554 (516) 296-7777 alure.com

Educational website

No-interest financing available

Online appointment scheduling

Special warranties for military

Free assessment

Price transparency

Good customer service

Services Offered

Window replacement/installation
Glass doors
Glass showers
Double-hung

Clinton Glass

Clinton Glass Logo

Our Rating

User Rating

221 E Main St, Clinton, CT 06413 (860) 664-3711 clintonglassct.com

Free assessment

Educational website

Good customer service

Price transparency

Services Offered

Glass repair
Mirrors
Glass doors
Glass showers
Energy-efficient options
Metal frames
Custom glass
Window replacement/installation

Window Depot USA of Southern CT

Window Depot USA of Southern CT Logo

Our Rating

User Rating

5726 Main St STe 2a, Trumbull, CT 06611 (203) 309-6027 windowdepotsouthernct.com

Timely service

Free assessment

Educational website

Good customer service

Price transparency

Services Offered

Vinyl frames
Bay windows
Glass doors
Double-hung
Window replacement/installation
Energy-efficient options
Triple pane glass

Home Services at The Home Depot

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Our Rating

User Rating

656 Reservoir Ave, Bridgeport, CT 06606 (203) 392-1123 homedepot.com

Price transparency

Educational website

Free assessment

Good customer service

Services Offered

Mirrors
Storm/impact windows
Glass showers
Window replacement/installation
Bay windows
Vinyl frames
Screen repair
Energy-efficient options
Glass doors
Custom window designs
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on window replacement companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

How Much Does Window Installation Cost In Guilford?

Window installation and replacement costs depend on a number of factors, including the number and size of the windows, the materials you choose, and how difficult your windows are to access or install. On average, Guilford homeowners will spend around $290 per window*. Below are additional cost breakdowns. *Cost data based on sample pricing for window installation from multiple retailers and adjusted for local cost of living.

When To Replace Windows

Installing new energy-efficient windows can greatly improve your home's comfort, appearance, insulation, noise reduction, and value. Some clear signs it's time for new windows include the following:

  • Windows that are hard to close, open, or lock properly due to age and wear.
  • Fogging between window panes, condensation issues, or rotting window frames that allow moisture intrusion into the home.
  • Cold air and drafts coming in from old, loose-fitting windows.
  • High energy bills and discomfort due to poor insulation.
  • Outdated and inefficient window styles that detract from your home’s curb appeal.

How To Choose a Window Company

For a successful window replacement, you want to locate an installer with proven expertise. Below, we cover the most important criteria for selecting a window installer.

Experience

Look for well-established local companies with many years, ideally decades, of experience successfully installing all kinds of windows. These providers are more likely to have a deep knowledge of Guilford's climate and local homeowner needs. Request references from recent clients to confirm the quality of a company's work.

Certifications

Choose an installer that’s accredited like leading window companies, and that has Fenestration and Glazing Industry Alliance (formerly AAMA) certification. Proper certification shows they've received appropriate instruction in installation best practices. Verify that installers are staff rather than subcontractors, and confirm that the technicians assigned to your job have certification.

Reputation

Read through online customer feedback, check the Better Business Bureau (BBB), and ask for local references. Review customer feedback to confirm that the provider consistently delivers quality work and good customer service. Avoid companies that have complaints of shoddy work or unfinished jobs.

Process

A quality provider will give you a detailed project plan, detailed timeline, clear expectations, and an overview of all material and installation options. Avoid providers that offer unclear quotes or timelines. Ask for continual contact throughout the process, so you aren't caught off guard once the work begins.

Warranties

Look for window installers that guarantee their work and provide warranties on labor and materials. This shows confidence in their work. Choose companies with unlimited lifetime warranties that can transfer to new homeowners.

Materials

Make sure the window company offers windows that are built to last and top energy-saving window brands within your budget. Look for enhanced UV protection, design flexibility, and good energy ratings. Check that the window materials also have manufacturer warranties.

Frequently Asked Questions About Window in Guilford, CT

In Guilford, the best time to install windows is when temperatures are mild, generally in the spring or fall. This allows installers to work with less worry about the weather.

The ideal type of replacement windows for your Guilford home depends on when your home was built –the average house in Guilford was built around 1974. For older homes, you might want to consider efficient windows such as double-pane windows, which are made to keep your home cool in the summer and warm in the winter. Wood frames also have a timeless look that's great for older homes. For newer homes, you can think about vinyl windows, which are affordable, durable and have a modern look.

Windows made from fiberglass, vinyl, or wood tend to last the longest, with some lasting for close to 45 years. Vinyl windows are especially durable and low-maintenance, making them an excellent choice if you want windows that can last a long time. Double or triple glazing can help reduce your heating and cooling bills over time.

The length of the window installation process depends on a range of factors, including the number of windows to be installed, the type and size of windows being put in, and the complexity of the job. Typically, window installation can take anywhere from a day up to a few days, with each window taking around 30 minutes to install.

Replacing your own windows can be a complex task, especially in Guilford, where temperatures can get quite warm. It's generally recommended to get a professional window installer. A professional installer has the knowledge and experience that ensures your windows are properly installed and that you get the most out of your investment.

After window installation, it's important to check for any air leaks and make sure the windows are properly sealed. You should also wash the windows at least once a year to stop debris from building up and causing damage. Additionally, if you live in an area with abundant rainfall, you should check the window sills and frames regularly to ensure that the seals are not wearing away or cracking.

Other Guilford, CT Home Services

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