Expert Advice On Improving Your Home

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10 Best Window Replacement Companies in Greenwich, CT

More than 380 people have received a free quote in the last 60 days.

Last Updated: February 25, 2025

Whether you want to improve your home's value or decrease your energy bills, upgrading your windows is a great idea. According to the Department of Energy, heat gained or lost through old or damaged windows could be responsible for 25–30% of the heating and cooling costs in your home. By installing energy-efficient windows, you could save an extra $441 on your power bills annually in Greenwich. Our guide to the top window installation companies in Greenwich will help you select the right installer for you.

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.
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 Greenwich

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

Good customer service

Free assessment

Educational website

Price transparency

Services Offered

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

Power Home Remodeling

Power Home Remodeling Logo

Our Rating

User Rating

1660 Walt Whitman Rd #140, Melville, NY 11747 (631) 339-7268 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

Energy-efficient windows and doors

Educational website

Good customer service

Free assessment

Family-owned and operated

Price transparency

Weekend availability

Services Offered

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

The Glass Guru

The Glass Guru Logo

Our Rating

User Rating

130 Hackensack St, East Rutherford, NJ 07073 (201) 366-3699 theglassguru.com

Educational website

Free assessment

Good customer service

Services Offered

Skylights
Energy-efficient options
Metal frames
Window repair
Wood frames
Screen repair
Storm/impact windows
Vinyl frames
Tempered glass
Custom glass
Glass showers
Glass repair
Triple pane glass
Mirrors
Glass doors
Window replacement/installation
Fiberglass frames

Melville Window Replacement

Melville Window Replacement Logo

Our Rating

User Rating

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

Free assessment

Educational website

Price transparency

Good customer service

Timely service

Services Offered

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

Window King LLC

Window King LLC Logo

Our Rating

User Rating

1075 Morris Park Ave, Bronx, NY 10461 (718) 792-5989 windowking.biz

Timely service

Good customer service

Estimate price matching

Free assessment

Price transparency

No-interest financing

Educational website

Free in-home consultation

Services Offered

Vinyl frames
Energy-efficient options
Glass doors
Window replacement/installation
Double-hung

Glass Doctor

Glass Doctor Logo

Our Rating

User Rating

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

Good customer service

Price transparency

Membership plans for glass repair

24/7 emergency service

Educational website

Home and auto glass

Services Offered

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

Pro Quality Home Improvements Inc.

Pro Quality Home Improvements Inc. Logo

Our Rating

User Rating

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

Free in-home consultation

Small business

Price transparency

Timely service

Free assessment

Educational website

No-interest financing

Good customer service

Services Offered

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

Alure Home Solutions

Alure Home Solutions Logo

Our Rating

User Rating

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

Price transparency

No-interest financing available

Free assessment

Special warranties for military

Good customer service

Educational website

Online appointment scheduling

Services Offered

Glass showers
Double-hung
Glass doors
Window replacement/installation

Sky Windows and Doors

Sky Windows and Doors Logo

Our Rating

User Rating

145 N Main St, Freeport, NY 11520 (516) 686-8485 skywindowsnj.com

Price transparency

Timely service

Free assessment

Good customer service

Educational website

Services Offered

Glass doors
Energy-efficient options
Window replacement/installation
Custom glass
Metal frames
Mirrors
Vinyl frames
Wood frames
Storm/impact windows
Glass showers
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 Greenwich?

The amount you'll spend on window installation or replacement is influenced by a number of factors, including how difficult your windows are to access or install, the materials you choose, and the number and size of the windows. On average, Greenwich homeowners will spend around $280 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

Replacing your old windows with new energy-efficient ones can substantially enhance your home's comfort, insulation, value, noise reduction, and appearance. Clear indicators it's time to invest in new windows include:

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

How To Choose a Window Company

Hiring a qualified window installer is the key to a successful project. Below, we cover the most important considerations when it comes to making your selection.

Experience

Make sure you select an experienced local installer with a long record of successfully installing and replacing windows. Providers that have served Greenwich for years are more likely to have a deep knowledge of the local climate and local homeowners' needs. Get references from recent clients to confirm a company provides quality installations.

Certifications

Select an installer that is accredited by leading window companies and associations like the Fenestration and Glazing Industry Alliance, formerly known as the AMMA. Appropriate accreditation means that a contractor is trained in window installation best practices. Confirm that installers are staff rather than subcontractors, and check that the technicians working on your project are certified.

Reputation

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

Process

The best window installation providers will supply a comprehensive project plan and schedule, clear expectations, and an overview of material and installation options. Avoid companies that offer ill-defined quotes or timelines that lack necessary details. Look for regular contact throughout to avoid surprises later on.

Warranties

Look for companies that guarantee their installations and provide warranties on labor and materials. This demonstrates confidence in their window installations. Seek out unlimited lifetime warranties that can even be transferred to new homeowners.

Materials

Verify that your window provider works with long-lasting, durable brands, offers energy-saving window options, and fits your budget. Look for window options with design flexibility, enhanced UV protection, and good energy ratings, and check whether the materials have their own manufacturer warranties.

Frequently Asked Questions About Window in Greenwich, CT

In Greenwich, the best time to install windows is when temperatures are mild, generally in the spring or fall. These conditions allow installers to work without having to worry about extreme temperatures.

The right type of replacement windows for your Greenwich home depends on when your home was built –the average house in Greenwich was built around 1961. If your home was built a while ago, you might want to consider efficient windows such as double-glazed windows, which are made to keep your home cool in the summer and warm in the winter. Wood frames also have a classic look that's great for older homes. For more modern homes, you might want to consider vinyl windows, which are affordable, durable and have a modern look.

You can save money on your window installation by choosing a less expensive option like single-hung windows with vinyl frames. These have lower prices compared to other kinds of windows like wood, fiberglass, or double-hung windows.

It varies on your specific needs and budget, but generally it's recommended to replace all your windows at once if they're not energy efficient. Replacing all your windows at once ensures that you'll get the most out of your energy savings and can possibly save you money in the long run. This is important in Greenwich, where the average energy bills are roughly $1,900 a year.

If you live in a rainier climate like Greenwich, you should wipe off any debris or dirt buildup from the windows often. Additionally, you ought to check your windows monthly to make sure they're working correctly. It's also a good idea to get a professional to inspect your windows annually for any potential damages or issues.

Window replacement companies in Greenwich typically offer many services, including installation, repair, window maintenance, window cleaning, window tinting, and weatherproofing.

Other Greenwich, CT Home Services