Expert Advice On Improving Your Home

Advertiser Disclosure

Our editorial team is committed to creating independent and objective content focused on helping our readers make informed decisions. To help support these efforts we receive compensation from companies that advertise with us.

The compensation we receive from these companies may impact how and where products appear on this site. This compensation does not influence the recommendations or advice our editorial team provides within our content. We do not include all companies, products or offers that may be available.

10 Best Window Replacement Companies in East Islip, NY

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

Last Updated: February 25, 2025

Whether you want to increase your home's value or decrease your energy bills, upgrading your windows is a great idea. In East Islip, you could save about $215 per year on your electricity bills after upgrading your windows. Drafty windows can reduce your home’s energy efficiency by up to 30%, according to the Department of Energy. If you can't decide between window installers, this is the best place to get started. Keep reading to find the best window installers in East Islip.

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 East Islip

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

Price transparency

Educational website

Free assessment

Services Offered

Double-hung
Skylights
Window replacement/installation
Glass doors
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

Good customer service

Free assessment

Price transparency

Timely service

Services Offered

Energy-efficient options
Window replacement/installation

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

Good customer service

Educational website

Energy-efficient windows and doors

Price transparency

Free assessment

Weekend availability

Family-owned and operated

Services Offered

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

Melville Window Replacement

Melville Window Replacement Logo

Our Rating

User Rating

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

Timely service

Educational website

Price transparency

Good customer service

Free assessment

Services Offered

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

Glass Doctor

Glass Doctor Logo

Our Rating

User Rating

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

Price transparency

Home and auto glass

Membership plans for glass repair

Educational website

Good customer service

24/7 emergency service

Services Offered

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

Window King LLC

Window King LLC Logo

Our Rating

User Rating

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

Good customer service

No-interest financing

Educational website

Price transparency

Estimate price matching

Free assessment

Free in-home consultation

Timely service

Services Offered

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

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

No-interest financing

Free in-home consultation

Free assessment

Good customer service

Price transparency

Small business

Timely service

Educational website

Services Offered

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

Alure Home Solutions

Alure Home Solutions Logo

Our Rating

User Rating

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

Special warranties for military

Free assessment

Educational website

Online appointment scheduling

Price transparency

No-interest financing available

Good customer service

Services Offered

Glass doors
Window replacement/installation
Glass showers
Double-hung

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

Educational website

Good customer service

Timely service

Free assessment

Price transparency

Services Offered

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

Bernie's Glass & Mirror

Bernie's Glass & Mirror Logo

Our Rating

User Rating

1554 Fulton St, Brooklyn, NY 11216 (917) 749-4858 berniesglass.com

Free assessment

Educational website

Timely service

Good customer service

Price transparency

Services Offered

Double-hung
Glass showers
Mirrors
Skylights
Window repair
Window replacement/installation
Glass doors
Energy-efficient options
Glass repair
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 East Islip?

Window installation and replacement costs will be influenced by a number of factors, including the materials you choose, how difficult your windows are to access or install, and the number and size of the windows. On average, East Islip homeowners spend roughly $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

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

  • Drafts and cold air leaking in through old, loose-fitting windows.
  • Outdated and inefficient window styles that take away from your house's curb appeal.
  • Windows that are hard to open, close, and lock properly due to wear and age.
  • Fogging between window panes, condensation issues, or rotting window frames that let in moisture.
  • High energy bills and a chilly house due to poor insulation around windows.

How To Choose a Window Company

For a successful window replacement, you need to locate an installer with proven expertise. Below, we cover the most important considerations when selecting a window installer.

Experience

Find well-established local installers with extensive experience. Providers that have served East Islip homeowners for years are more likely to know the local climate and how to best meet your needs. Request references from recent customers to confirm a company’s reputation.

Certifications

Choose an installer that’s accredited like leading window companies, and that has Fenestration and Glazing Industry Alliance (formerly AAMA) certification. Suitable credentials indicate they've received suitable education in installation best practices. Verify that installers are staff, not subcontracted laborers, 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 make sure that the company consistently provides quality work and good customer service. Avoid companies that have complaints of shoddy work or unfinished jobs.

Process

A reputable provider will give you a comprehensive 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 later on.

Warranties

Look into window installers that back their installations with warranties on materials and labor. This demonstrates confidence in their work. Target companies that offer unlimited lifetime warranties that can pass to new homeowners.

Materials

Make sure your window installer offers durable, long-lasting window options and top energy-saving window brands that fit your budget. Look for good energy ratings, enhanced UV protection, and design flexibility. Check that the window materials also have manufacturer warranties.

Frequently Asked Questions About Window in East Islip, NY

In East Islip, the best time to install windows is during the early fall when the temperatures are milder, so the windows can seal and settle properly. A professional local window installer in East Islip will be able to explain when the best time is to install windows on your house.

The best type of replacement window for your East Islip home will depend on your home's age, as well as your style preference and budget. You'll want to consider the style of your home — such as if it's old — so your new windows match. Wood windows can give a traditional look and feel, while vinyl windows are more popular in newer homes. Fiberglass-framed windows are also a popular choice, as they are energy efficient and durable.

Windows made from vinyl, wood, or fiberglass tend to last the longest, with some lasting more than 45 years. Vinyl windows are particularly durable and low-maintenance, making them an excellent choice if you want windows that will last a long time. Adding more glazing can help reduce your heating and cooling bills in the long run.

The window installation process typically involves measuring and ordering the windows, preparing the area for installation, removing the existing window, installing the new one, and insulating the frame. Depending on the type of window being put in, additional steps may be required.

Replacing your own windows can be a difficult task, especially in East Islip, where temperatures can get quite warm. It's generally recommended to hire a skilled 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 prevent debris from accumulating and causing damage. Additionally, if you live in an area with abundant rainfall, you should inspect the window sills and frames regularly to ensure that the seals are not wearing away or cracking.

Yes, many window companies provide financing options. Some installers offer low-interest loans, although you may not qualify if your income is on the higher end, while other companies offer unique financing plans with terms and conditions that vary depending on the project.

Other East Islip, NY Home Services