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Best Window Replacement Companies in Chelmsford, MA

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  6. Chelmsford Window Replacement
Written By Max Peterson | Last Updated: February 05, 2024

Replacement windows can shield your home from water damage, boost its energy efficiency, and provide it with some extra charm. A professional window provider can help you make the most of your replacement windows, so you can make them work for you.

Top Pick
  • Full-service installation
  • Large window selection
  • Nearly 30 years of experience
Best Financing
  • Full-service installation
  • In-house, U.S.-made products
  • More than 70 years of experience
Most Customizable
  • Full-service remodeling
  • 96% satisfaction rate
  • More than 30 years of experience

Top 10 Chelmsford Window Installation Companies

By choosing one of these esteemed companies for window replacement in Chelmsford, you'll enjoy your new windows in no time.

The This Old House Reviews Team evaluated scores of window providers in and around Chelmsford. We took into account the following metrics to identify the best window replacement companies:

  • Energy-efficiency guarantees
  • Customer reviews and recommendations
  • Product quality
  • Professional experience and licensure
  • Services and warranties

Power Home Remodeling Logo

Power Home Remodeling

Based on 38 customer reviews.

Services Offered

Window Install & Replacement


  • Good customer service
362 Elm St, Marlborough, MA 508-460-1943 powerhrg.com
Window World of Boston Logo

Window World of Boston

Based on 510 customer reviews.

Services Offered

Bay Windows Sliding Glass Doors Window Install & Replacement Energy-Efficient Options


  • Free assessment
  • Price transparency
  • Educational website
15 A Cummings Park Dr, Woburn, MA 781-202-6460 windowworldofboston.com
O'Sullivan Installs Logo

O'Sullivan Installs

Based on 17 customer reviews.

Services Offered

Alside Energy-Efficient Options Bay Windows Window Install & Replacement


  • Educational website
  • Price transparency
  • Free assessment
25 Sullivan Rd Unit 5, Billerica, MA 978-234-2297 osullivaninstalls.com
Dracut Window & Door Logo

Dracut Window & Door

Based on 73 customer reviews.

Services Offered

Energy-Efficient Options Window Install & Replacement


  • Price transparency
  • Educational website
  • Free assessment
16 Holbrook Ave, Dracut, MA 978-751-3667 dracutwindowanddoor.com
Guaranteed Aluminum & Vinyl Inc Logo

Guaranteed Aluminum & Vinyl

Based on 74 customer reviews.

Services Offered

Double-Hung Bay Windows Sliding Glass Doors Glass Repair Window Install & Replacement Commercial Windows Aluminum Frames Screen Repair Vinyl Frames Window Repair Storm Doors


  • Price transparency
  • Good customer service
349 Bridge St, Lowell, MA 978-452-2392 lowell-window-replacement-glass-repair.com
12 Penny Exteriors, Inc. Logo

12 Penny Exteriors

Based on 16 customer reviews.

Services Offered

Vinyl Frames Fiberglass Frames Storm Doors Window Repair Window Install & Replacement


  • Educational website
  • Price transparency
301 Littleton Rd #989, Westford, MA 978-654-0275 12penny.com
Manny's Roofing Logo

Manny's Roofing

Based on 38 customer reviews.

Services Offered

Window Install & Replacement Window Repair Velux Skylights Commercial Windows Roof Windows


  • Timely service
  • Free assessment
  • Price transparency
1197 Bridge St, Pelham, NH 603-800-7663 mannysroofing.com
Nashua Glass Logo

Nashua Glass

Based on 43 customer reviews.

Services Offered

Commercial Windows Tempered Glass Storm Windows Glass Repair Mirrors Glass Showers Window Repair Window Install & Replacement


  • Price transparency
  • Free assessment
  • Good customer service
110 Chestnut St, Nashua, NH 603-882-0648 nashuaglass.com
Rite Window Logo

Rite Window

Based on 458 customer reviews.

Services Offered

Glass Showers Energy-Efficient Options Window Install & Replacement Bay Windows


  • Good customer service
  • Educational website
  • Free assessment
7 Roessler Rd, Woburn, MA 781-491-0419 ritewindow.com

More Local Window Companies

HI Tech Window and Siding Installations Inc.

User Reviews: 4.5/5 

20 Aegean Dr STE 4
Methuen, MA 01844

Pro Entry Installs LLC

User Reviews: 4.7/5 

7 Cassidy Ave #2863
Salem, NH 03079

The Aulson Company, INC

User Reviews: 4.1/5 

49 Danton Dr
Methuen, MA 01844


User Reviews: 4.7/5 

110 Cannongate III Rd
Nashua, NH 03063

Accurate Glass, Inc.

User Reviews: 4.5/5 

11 Garden Terrace
Woburn, MA 01801


User Reviews: 4.6/5 

13 Red Roof Ln Suite 201
Salem, NH 03079

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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Facts about Chelmsford
Annual Energy Efficient Windows Savings: $464
Average Max Temp: 56°F
Average Min Temp: 41°F
Average Daily Sunlight: 52%
Average Annual Snowfall: 60.5"
Average Monthly Precipitation: 3.93"

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

How To Choose a Window Company in Chelmsford

It's essential to find a window company that aligns with your specific values, needs, and preferences. Consider the following points during your search:

Window Cost by Type

Replacing your windows is a substantial investment, so balancing cost with quality is important. Choosing cheap windows could actually raise your overall cost, due to their reduced lifespan and more intensive maintenance needs. The age of your home, as well as the materials, sizes, and styles of windows you opt for, can affect pricing. Transom windows are inexpensive with their simple size and straightforward form factor, while a sweeping, custom-size picture window will cost more. An installer can help you with selecting the options that fit your needs.

In this table, you can find cost data for the most common residential window types to determine how much you might pay.

Window Types Average Cost
Arched $253-$1555
Awning $366-$1021
Bay $844-$6267
Custom $376-$1044
Casement $292-$1694
Double-hung $136-$882
Egress $250-$625
Glass Block $50-$634
Picture $220-$1624
Single-hung $99-$1671
Skylight $125-$1508
Sliding $287-$1462
Storm $59-$413
Transom $306-$640

Window Material Cost

You'll also need to choose a window material. Homeowners usually base their decision on the local climate, aesthetic preferences and energy efficiency objectives. Aluminum windows are perfect for sleek, modern designs, but they cost more up-front. You'll pay less for wood windows up-front, but you'll need to invest in regular maintenance to prevent the frame from wear and warping. Vinyl is readily available and tends to cost less, but don't underestimate its strong durability and low maintenance needs.

Window Types Average Cost
Aluminum $59-$1671
Composite $603-$1355
Fiberglass $99-$844
Vinyl $203-$1880
Wood $301-$1694

Other Window Replacement Costs

Ask each contractor you're evaluating about warranty fees, labor costs, and permit fees. This will help you understand the total costs involved in the project.

Experience and Training

Choose a company that focuses on window installation and repair, and look for this information on its website:

  • How many years it's been operating
  • Photo galleries of completed projects
  • Private certifications attesting to its workmanship
The more experience a company has, the better its service and workmanship.

Licensing and Credentials

Massachusetts window companies are classified as general contractors and require a Construction Supervisor License (CSL) with a window classification. CSL applicants need to pass an open-book exam and show 36 months of vocational training. Once a company has a CSL, it also needs to register with the Office of Consumer Affairs and Business Regulation as a "home improvement contractor."

Types of Windows Offered

No two contractors offer the same window types and materials. Find one that focuses on the type you want for your home.

  • Awning
  • Bay
  • Bow
  • Casement
  • Crank-out
  • Custom
  • Double- or single-hung
  • Egress
  • Garden
  • Jalousie
  • Picture
  • Sliding
  • Skylight
  • Specialty
  • Storm
  • Transom
  • Vent
Finally, pay close attention to the framing materials that a provider uses. Each frame material has a different life span, energy efficiency level and price point. A company will usually specify whether the windows they mount use vinyl, fiberglass, wood, composite, or metal.

Customer Feedback

Reading other customers' stories is one of the smartest ways to screen potential window companies. Trustworthy sources for customer reviews include Yelp, Trustpilot, and the BBB Referrals can also help you in your company search. Ask each company you're interested in for a list of references, and talk to family and friends about who they use for window installations.

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Frequently Asked Questions About Window Replacement in Chelmsford

Why should I hire a professional to install or replace my windows?

By working with a professional, you don't need to worry about making measurement mistakes or lacking the right tools. A window installation crew is well-equipped with the right supplies and skills to do the job safely and accurately. You can also get fast, informed answers to your questions and personalized help to make the most of your new windows

Are there tax incentives for installing energy-efficient windows?

Yes. No matter where you're located, you can claim a federal tax credit of up to $3,200 per year on up to 30% of your window replacement's cost. Additionally, most state and some local authorities offer tax credits of their own. We recommend consulting your local energy department for specific information about tax incentives available in your area.

Should I replace my windows a couple at a time, or is it more economical to replace them all at once?

The answer to this question largely depends on your budget, how your windows are doing overall, and your plan for your home. Replacing all your windows at once can save you money on energy bills and add value to your home, while installing a few windows at a time can protect your budget and let you prioritize the windows in the worst condition. Ultimately, it's important to evaluate the advantages and disadvantages and decide on the method that works best for your situation.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

More Window Resources

National Windows Company Ranking Methodology


Energy Star