10 Best Window Replacement Companies in Portland, ME

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Last Updated: February 25, 2025

Whether you want to increase your home's value or decrease your energy bills, replacing your windows is an excellent idea. Outdated windows can cost you in electric bills — about an extra $341 a year in Portland. The Department of Energy estimates that about 30% of your house’s heat or cool air could be going out your windows. Picking a window installer can be difficult, which is why we've compiled this list of the top window installation companies in Portland.

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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 Portland

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 Window Replacement

Renewal by Andersen Window Replacement Logo

Our Rating

User Rating

66 Industrial Park Rd, Saco, ME 04072 (207) 358-6094 windowsdoorsportland.com

Price transparency

Educational website

Free assessment

Good customer service

Services Offered

Vinyl frames
Window replacement/installation
Double-hung
Energy-efficient options
Glass doors
Bay windows
Custom window designs
Metal frames

Midcoast Glass & Windows

Midcoast Glass & Windows Logo

Our Rating

User Rating

9 Monument Pl #1, Topsham, ME 04086 (207) 725-2264 midcoastglassmaine.com

Price transparency

Free assessment

Good customer service

Services Offered

Storm/impact windows
Glass doors
Window replacement/installation
Bay windows
Energy-efficient options
Glass repair
Vinyl frames
Glass showers

Lighthouse Contracting Group, LLC

Lighthouse Contracting Group, LLC Logo

Our Rating

User Rating

104 Lily Pond Rd Unit A, Gilford, NH 03249 (603) 567-4172 lighthousecontractinggroup.com

Educational website

Price transparency

Free assessment

Good customer service

Services Offered

Window replacement/installation

Rite Window

Rite Window Logo

Our Rating

User Rating

41 Industrial Dr #9, Exeter, NH 03833 (603) 945-7126 ritewindow.com

Good customer service

Free assessment

Educational website

Price transparency

Services Offered

Glass doors
Glass showers
Double-hung
Energy-efficient options
Window replacement/installation
Bay windows

The Window Source NH

The Window Source NH Logo

Our Rating

User Rating

779 Lafayette Rd Suite 1, Seabrook, NH 03874 (603) 764-7212 windowsourcenh.com

Good customer service

Free assessment

Price transparency

Educational website

Services Offered

Double-hung
Energy-efficient options
Glass doors
Storm/impact windows
Bay windows
Window replacement/installation
Vinyl frames

Southers Construction

Southers Construction Logo

Our Rating

User Rating

12 Crosby Rd, Dover, NH 03820 (603) 734-4572 southersconstruction.com

Educational website

Good customer service

Price transparency

Timely service

Free assessment

Services Offered

Double-hung
Window replacement/installation
Bay windows

Pella Windows & Doors of Newington

Pella Windows & Doors of Newington Logo

Our Rating

User Rating

25 Fox Run Rd Suite 2, Newington, NH 03801 (603) 725-4690 pellabranch.com

Good customer service

Price transparency

Free assessment

Educational website

Services Offered

Bay windows
Wood frames
Vinyl frames
Window replacement/installation
Double-hung
Glass doors

Glass Unlimited

Glass Unlimited Logo

Our Rating

User Rating

1213 Post Rd, Wells, ME 04090 (207) 646-8268 glassunlimitedme.com

Free assessment

Good customer service

Timely service

Price transparency

Services Offered

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

Glass Routes Co

Glass Routes Co Logo

Our Rating

User Rating

181 Littleworth Rd, Madbury, NH 03823 (603) 742-2600 glassroutes.net

Price transparency

Good customer service

Free assessment

Educational website

Services Offered

Window replacement/installation
Mirrors
Vinyl frames
Glass showers
Custom glass

Window World of Southern Maine

Window World of Southern Maine Logo

Our Rating

User Rating

2 Karen Dr Unit 5, Westbrook, ME 04092 (207) 747-5117 windowworldofmaine.com

Educational website

Good customer service

Price transparency

Free assessment

Services Offered

Window replacement/installation
Bay windows
Glass doors
Double-hung
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 Portland?

The amount you'll spend on window installation or replacement is influenced by a number of factors, including the materials you choose, the number and size of the windows, and how difficult your windows are to access or install. On average, Portland homeowners 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 significantly improve your home's insulation, noise reduction, appearance, value, and comfort. Signs it's time to invest in new windows include:

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

How To Choose a Window Company

For a successful window replacement, you need to hire an installation contractor with proven expertise. Below, we cover the most important criteria for picking a window installer.

Experience

Make sure you select an experienced local installer with a proven track record of successfully installing and replacing windows. Providers that have served Portland for years are more likely to understand the local climate and local homeowners' needs. Get references from recent clients to learn more about a provider’s service.

Certifications

Choose an installer that’s certified like leading window companies, and that has Fenestration and Glazing Industry Alliance (formerly AAMA) certification. Proper certification shows they've received suitable education in installation best practices. Verify that installers are staff, not subcontracted laborers, and confirm that any technicians working on your home have certification.

Reputation

Spend time reading through online reviews, checking the Better Business Bureau (BBB), and asking for local references. Review customer feedback to verify that a company consistently does quality work and provides good service. Avoid companies with complaints of shoddy or unfinished work.

Process

A reputable provider will give you a detailed project plan, well-outlined timeline, clear expectations, and an overview of all material and installation options. Avoid providers that offer vague quotes or timelines. Ask for continual contact throughout the process, so you aren't caught off guard later on.

Warranties

Look for window installers that assure quality installations and offer warranties on labor and materials. This demonstrates confidence in their work. Choose companies with unlimited lifetime warranties that transfer to new homeowners.

Materials

Confirm that your window company offers windows built for longevity as well as leading energy-efficient window bands that fall within your budget. Research choices with design flexibility, good energy ratings, and enhanced UV protection, and verify that the materials come with their own manufacturer warranties.

Frequently Asked Questions About Window in Portland, ME

The ideal time to install windows in Portland is when temperatures are moderate, generally between the spring and fall. These conditions allow professionals to work without having to worry about the weather.

The ideal type of replacement windows for your Portland home depends on when your home was built –the average house in Portland was built around 1970. For older homes, you might want to consider energy-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 timeless look that's great for older homes. For more modern homes, you may want to think about vinyl windows, which are durable, affordable and have a modern look.

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

The process for window installation typically includes measuring the space, removing the old windows, installing the new windows, inspecting for proper sealing, and caulking around the edges of the frames. Additional steps may be necessary depending on the type of window being installed.

Yes, many window companies provide financing options for their customers. Some installers provide low-interest loans based on your income, while other companies provide unique financing plans with terms and conditions that vary depending on the job.

Window replacement companies in Portland typically offer a variety of services, such as window installation, fixing windows, window maintenance, cleaning, window tinting, and weatherproofing.

Other Portland, ME Home Services

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